Evidence · historical analysis

Was GB electricity always lower-carbon overnight?

A comparison of fixed overnight and midday periods, 2018–2025.

No. Overnight was higher on 1,068 of the 2,863 complete days compared.

00:00–06:00 versus 11:00–17:00 UTC.
GB estimated average generation intensity, in gCO₂/kWh.

Historical comparison. Not a forecast, price comparison or recommendation about when you should use electricity.

1,794Lower overnight
1,068Higher overnight
1Equal at source precision
59Dates excluded

The complete comparison

Year by year

Bars show the outcomes among complete days. Excluded dates are separate: they are neither lower nor higher.

Lower overnightHigher overnightEqual

Patterns and labels distinguish outcomes; the table below provides every count.

On small screens, scroll the table sideways for all columns.

Complete-day outcomes and excluded dates by UTC year. Difference is overnight minus midday.
YearLowerHigherEqualCompleteExcludedMedian difference
gCO₂/kWh
20182887503632-39.000
201925010603569-24.875
202024811303615-21.000
202125210803605-20.667
202219317103641-5.375
2023167164033134-1.250
202421115403651-7.500
202518517713632-0.500

Both directions occurred

Two ends of the same evidence

These are the largest signed differences in each direction across all complete days—not selected examples from a single season.

Largest overnight excess

23 July 2022

Overnight
275.083 gCO₂/kWh
Midday
146.833 gCO₂/kWh
Overnight minus midday
128.250 gCO₂/kWh

Largest overnight reduction

14 January 2019

Overnight
143.833 gCO₂/kWh
Midday
355.417 gCO₂/kWh
Overnight minus midday
-211.583 gCO₂/kWh

A negative difference means overnight was lower; a positive difference means it was higher. Neither example tells you what will happen tonight.

Inspectable observations → derived results

Every complete day

All verified daily results are below, in chronological order. Open a year to inspect it. Displayed values are rounded; classification uses exact source precision.

2018 · 363 complete days

Scroll the table sideways if needed to see every column.

2018: mean estimated intensity in gCO₂/kWh. Difference = overnight minus midday.
Date (UTC)OvernightMiddayDifferenceOvernight was
164.583247.500-82.917LOWER
216.417272.833-56.417LOWER
176.333236.583-60.250LOWER
246.417289.917-43.500LOWER
285.167384.917-99.750LOWER
248.167254.333-6.167LOWER
229.000281.583-52.583LOWER
206.333307.250-100.917LOWER
244.500350.750-106.250LOWER
286.833406.833-120.000LOWER
339.417415.500-76.083LOWER
308.917318.833-9.917LOWER
207.167270.500-63.333LOWER
221.917261.667-39.750LOWER
159.417258.750-99.333LOWER
155.667226.917-71.250LOWER
139.083230.333-91.250LOWER
191.500293.167-101.667LOWER
198.667238.250-39.583LOWER
230.000357.667-127.667LOWER
291.750266.33325.417HIGHER
175.000244.833-69.833LOWER
163.417200.667-37.250LOWER
134.417219.250-84.833LOWER
155.750281.083-125.333LOWER
304.833368.500-63.667LOWER
197.000189.9177.083HIGHER
142.667160.000-17.333LOWER
129.750234.250-104.500LOWER
238.917286.583-47.667LOWER
151.500226.500-75.000LOWER
148.750199.667-50.917LOWER
152.583319.917-167.333LOWER
307.083318.000-10.917LOWER
245.000283.917-38.917LOWER
272.167352.750-80.583LOWER
295.583345.417-49.833LOWER
259.167350.083-90.917LOWER
261.917344.000-82.083LOWER
215.333275.167-59.833LOWER
207.500240.583-33.083LOWER
147.167182.667-35.500LOWER
174.333274.583-100.250LOWER
166.083294.750-128.667LOWER
260.917264.750-3.833LOWER
187.833193.333-5.500LOWER
168.583270.250-101.667LOWER
210.083287.333-77.250LOWER
285.167321.917-36.750LOWER
258.583365.667-107.083LOWER
230.917280.083-49.167LOWER
327.667390.917-63.250LOWER
343.333354.000-10.667LOWER
357.167315.25041.917HIGHER
280.500251.50029.000HIGHER
256.833265.583-8.750LOWER
334.333387.917-53.583LOWER
455.083422.75032.333HIGHER
423.833368.00055.833HIGHER
350.500355.500-5.000LOWER
345.833348.417-2.583LOWER
380.250379.0001.250HIGHER
393.417376.75016.667HIGHER
425.500405.75019.750HIGHER
251.500373.583-122.083LOWER
324.417345.000-20.583LOWER
281.667302.917-21.250LOWER
308.917397.500-88.583LOWER
247.333255.750-8.417LOWER
328.833355.083-26.250LOWER
298.917380.500-81.583LOWER
408.417422.417-14.000LOWER
334.917289.66745.250HIGHER
215.333321.083-105.750LOWER
325.417323.6671.750HIGHER
210.167243.250-33.083LOWER
225.250284.000-58.750LOWER
302.667329.167-26.500LOWER
288.167355.417-67.250LOWER
359.667279.33380.333HIGHER
239.583341.667-102.083LOWER
175.000242.083-67.083LOWER
313.083330.000-16.917LOWER
318.083302.00016.083HIGHER
315.667330.333-14.667LOWER
219.417244.917-25.500LOWER
276.000300.583-24.583LOWER
325.167316.9178.250HIGHER
235.667252.667-17.000LOWER
192.250246.250-54.000LOWER
274.500305.417-30.917LOWER
192.917180.00012.917HIGHER
183.583228.500-44.917LOWER
217.417211.9175.500HIGHER
189.917240.833-50.917LOWER
159.167141.41717.750HIGHER
204.583251.000-46.417LOWER
271.167281.333-10.167LOWER
295.000330.333-35.333LOWER
180.333262.917-82.583LOWER
250.333290.000-39.667LOWER
233.417294.333-60.917LOWER
291.583371.917-80.333LOWER
299.083232.00067.083HIGHER
238.667199.16739.500HIGHER
189.250185.9173.333HIGHER
119.500155.833-36.333LOWER
157.250161.500-4.250LOWER
176.750231.583-54.833LOWER
262.583199.16763.417HIGHER
273.000179.41793.583HIGHER
180.667142.91737.750HIGHER
126.083152.417-26.333LOWER
123.917242.750-118.833LOWER
178.833152.83326.000HIGHER
121.500131.333-9.833LOWER
290.083313.333-23.250LOWER
247.667288.833-41.167LOWER
225.917240.333-14.417LOWER
180.833219.833-39.000LOWER
221.333170.58350.750HIGHER
127.500180.833-53.333LOWER
215.000211.1673.833HIGHER
220.167243.667-23.500LOWER
213.667136.41777.250HIGHER
237.083139.91797.167HIGHER
246.750169.66777.083HIGHER
224.083206.25017.833HIGHER
227.750183.50044.250HIGHER
180.500177.2503.250HIGHER
156.500136.33320.167HIGHER
219.583240.500-20.917LOWER
238.583192.50046.083HIGHER
205.750180.75025.000HIGHER
230.250200.75029.500HIGHER
153.250219.333-66.083LOWER
208.417222.000-13.583LOWER
263.167242.58320.583HIGHER
277.750162.417115.333HIGHER
186.167151.66734.500HIGHER
263.833232.41731.417HIGHER
199.917177.83322.083HIGHER
203.167189.25013.917HIGHER
223.083270.000-46.917LOWER
241.583251.333-9.750LOWER
216.500151.16765.333HIGHER
115.417137.000-21.583LOWER
225.583254.917-29.333LOWER
193.250218.000-24.750LOWER
203.833288.833-85.000LOWER
258.000290.917-32.917LOWER
257.250280.667-23.417LOWER
245.917251.667-5.750LOWER
243.583240.2503.333HIGHER
241.917276.333-34.417LOWER
205.667268.000-62.333LOWER
230.417263.750-33.333LOWER
252.833280.333-27.500LOWER
241.250287.833-46.583LOWER
256.917248.8338.083HIGHER
257.000225.08331.917HIGHER
233.917249.417-15.500LOWER
240.917273.833-32.917LOWER
254.750227.41727.333HIGHER
128.750129.917-1.167LOWER
190.500230.333-39.833LOWER
226.583185.33341.250HIGHER
173.500203.583-30.083LOWER
175.750205.833-30.083LOWER
192.083272.500-80.417LOWER
180.167213.167-33.000LOWER
156.000188.583-32.583LOWER
186.167228.667-42.500LOWER
242.250220.75021.500HIGHER
268.083241.41726.667HIGHER
276.083283.000-6.917LOWER
289.583289.917-0.333LOWER
263.417277.083-13.667LOWER
241.000281.500-40.500LOWER
236.667255.583-18.917LOWER
218.667205.33313.333HIGHER
185.500192.250-6.750LOWER
206.333249.833-43.500LOWER
189.667261.333-71.667LOWER
256.750292.000-35.250LOWER
246.583276.500-29.917LOWER
301.917283.50018.417HIGHER
285.167257.83327.333HIGHER
265.417243.00022.417HIGHER
253.917273.417-19.500LOWER
225.917251.250-25.333LOWER
226.333295.333-69.000LOWER
285.000312.583-27.583LOWER
281.667306.167-24.500LOWER
277.333243.25034.083HIGHER
236.167237.250-1.083LOWER
253.500293.750-40.250LOWER
260.167307.417-47.250LOWER
267.083321.583-54.500LOWER
271.000297.667-26.667LOWER
255.833296.917-41.083LOWER
271.167270.0831.083HIGHER
209.167229.583-20.417LOWER
228.333251.333-23.000LOWER
232.667277.250-44.583LOWER
239.083258.833-19.750LOWER
228.750231.500-2.750LOWER
221.083253.167-32.083LOWER
149.833117.00032.833HIGHER
124.250130.500-6.250LOWER
134.083216.583-82.500LOWER
182.167183.667-1.500LOWER
192.083212.500-20.417LOWER
188.833254.167-65.333LOWER
237.833277.500-39.667LOWER
224.500198.91725.583HIGHER
222.917222.2500.667HIGHER
201.083249.083-48.000LOWER
237.500280.833-43.333LOWER
210.667222.083-11.417LOWER
211.000240.917-29.917LOWER
187.250206.417-19.167LOWER
199.417222.583-23.167LOWER
142.583217.500-74.917LOWER
262.333268.333-6.000LOWER
240.833248.417-7.583LOWER
165.000169.750-4.750LOWER
138.417184.250-45.833LOWER
158.000175.083-17.083LOWER
117.833159.500-41.667LOWER
137.667193.750-56.083LOWER
273.417331.583-58.167LOWER
282.000290.000-8.000LOWER
176.500244.167-67.667LOWER
248.417232.66715.750HIGHER
92.333169.250-76.917LOWER
92.667198.750-106.083LOWER
184.917115.83369.083HIGHER
87.250167.417-80.167LOWER
210.167261.417-51.250LOWER
239.250270.750-31.500LOWER
247.333323.917-76.583LOWER
266.917269.083-2.167LOWER
206.750246.667-39.917LOWER
176.333175.3331.000HIGHER
225.250309.000-83.750LOWER
261.917308.917-47.000LOWER
258.750309.667-50.917LOWER
264.833306.167-41.333LOWER
167.667234.167-66.500LOWER
259.667248.50011.167HIGHER
159.167142.50016.667HIGHER
128.500195.500-67.000LOWER
133.667230.000-96.333LOWER
163.083289.167-126.083LOWER
184.667255.583-70.917LOWER
170.667217.583-46.917LOWER
199.917268.500-68.583LOWER
174.167167.0007.167HIGHER
194.000221.667-27.667LOWER
102.583150.167-47.583LOWER
135.750151.083-15.333LOWER
141.250275.917-134.667LOWER
108.667160.583-51.917LOWER
161.667264.250-102.583LOWER
273.083179.33393.750HIGHER
204.250328.583-124.333LOWER
282.917207.16775.750HIGHER
140.333254.417-114.083LOWER
245.417238.8336.583HIGHER
208.000263.500-55.500LOWER
233.833201.33332.500HIGHER
194.250220.917-26.667LOWER
171.667239.417-67.750LOWER
154.500209.750-55.250LOWER
208.000264.000-56.000LOWER
207.500233.417-25.917LOWER
242.250291.167-48.917LOWER
268.583230.00038.583HIGHER
191.917185.7506.167HIGHER
170.500215.750-45.250LOWER
197.667215.417-17.750LOWER
204.417195.0839.333HIGHER
154.750216.167-61.417LOWER
140.750165.667-24.917LOWER
136.500165.750-29.250LOWER
165.083260.583-95.500LOWER
228.833333.000-104.167LOWER
241.000279.000-38.000LOWER
259.250361.667-102.417LOWER
318.333342.167-23.833LOWER
280.333292.833-12.500LOWER
253.167202.66750.500HIGHER
190.083169.41720.667HIGHER
124.250192.833-68.583LOWER
121.667163.000-41.333LOWER
123.750240.417-116.667LOWER
183.083288.000-104.917LOWER
157.500188.333-30.833LOWER
108.417187.000-78.583LOWER
145.667256.833-111.167LOWER
215.667330.000-114.333LOWER
244.000356.833-112.833LOWER
294.000338.583-44.583LOWER
274.833329.417-54.583LOWER
225.667324.750-99.083LOWER
161.500166.750-5.250LOWER
131.750286.917-155.167LOWER
237.417339.750-102.333LOWER
200.750245.250-44.500LOWER
127.917235.417-107.500LOWER
199.333265.667-66.333LOWER
126.083200.833-74.750LOWER
116.250250.833-134.583LOWER
198.833216.167-17.333LOWER
149.333247.500-98.167LOWER
138.750264.833-126.083LOWER
145.333249.667-104.333LOWER
212.667317.000-104.333LOWER
335.417378.417-43.000LOWER
267.417252.25015.167HIGHER
213.750262.917-49.167LOWER
251.417334.500-83.083LOWER
192.167315.833-123.667LOWER
242.000354.167-112.167LOWER
357.417426.583-69.167LOWER
238.167298.083-59.917LOWER
255.333412.667-157.333LOWER
256.417299.667-43.250LOWER
168.583251.583-83.000LOWER
129.583243.833-114.250LOWER
153.167235.083-81.917LOWER
183.833268.667-84.833LOWER
209.750244.000-34.250LOWER
140.417303.417-163.000LOWER
303.250378.917-75.667LOWER
249.583313.833-64.250LOWER
202.250223.500-21.250LOWER
124.167171.833-47.667LOWER
105.000184.333-79.333LOWER
109.417193.167-83.750LOWER
191.250366.167-174.917LOWER
289.917312.417-22.500LOWER
225.333297.833-72.500LOWER
131.833266.917-135.083LOWER
201.417317.250-115.833LOWER
153.167208.083-54.917LOWER
140.583325.250-184.667LOWER
248.000307.917-59.917LOWER
123.500258.417-134.917LOWER
220.333272.750-52.417LOWER
190.667250.083-59.417LOWER
223.083293.917-70.833LOWER
172.250208.417-36.167LOWER
264.333336.917-72.583LOWER
296.833338.167-41.333LOWER
243.667299.083-55.417LOWER
191.333281.750-90.417LOWER
238.667332.083-93.417LOWER
235.500285.250-49.750LOWER
112.500176.750-64.250LOWER
192.667229.417-36.750LOWER
159.250226.333-67.083LOWER
2019 · 356 complete days

Scroll the table sideways if needed to see every column.

2019: mean estimated intensity in gCO₂/kWh. Difference = overnight minus midday.
Date (UTC)OvernightMiddayDifferenceOvernight was
113.667245.000-131.333LOWER
260.250365.333-105.083LOWER
326.583404.667-78.083LOWER
332.083347.500-15.417LOWER
276.333326.750-50.417LOWER
283.917379.833-95.917LOWER
197.667214.250-16.583LOWER
100.667239.083-138.417LOWER
238.500345.417-106.917LOWER
296.667384.167-87.500LOWER
247.583346.833-99.250LOWER
126.833171.500-44.667LOWER
99.750178.917-79.167LOWER
143.833355.417-211.583LOWER
161.083256.250-95.167LOWER
161.417300.083-138.667LOWER
180.583323.333-142.750LOWER
320.250308.16712.083HIGHER
215.917353.417-137.500LOWER
309.500320.333-10.833LOWER
319.833353.583-33.750LOWER
227.667377.917-150.250LOWER
332.333398.417-66.083LOWER
382.333410.833-28.500LOWER
250.167247.5832.583HIGHER
120.000182.417-62.417LOWER
119.583154.083-34.500LOWER
164.583300.167-135.583LOWER
264.333344.833-80.500LOWER
283.583366.833-83.250LOWER
334.083338.917-4.833LOWER
236.417335.167-98.750LOWER
203.000245.917-42.917LOWER
240.750228.66712.083HIGHER
146.083278.500-132.417LOWER
317.667277.25040.417HIGHER
167.417254.000-86.583LOWER
199.583222.917-23.333LOWER
117.500173.750-56.250LOWER
97.167124.833-27.667LOWER
226.083189.66736.417HIGHER
213.417312.917-99.500LOWER
200.167215.667-15.500LOWER
165.333201.000-35.667LOWER
172.000238.167-66.167LOWER
215.917210.7505.167HIGHER
125.500178.000-52.500LOWER
105.667119.750-14.083LOWER
115.667192.417-76.750LOWER
145.333243.000-97.667LOWER
132.667183.083-50.417LOWER
151.333213.000-61.667LOWER
187.250202.667-15.417LOWER
125.333145.250-19.917LOWER
248.500192.75055.750HIGHER
235.500259.500-24.000LOWER
239.167272.750-33.583LOWER
258.833267.917-9.083LOWER
273.917297.083-23.167LOWER
250.500301.417-50.917LOWER
205.000142.41762.583HIGHER
89.917207.750-117.833LOWER
120.250171.667-51.417LOWER
171.167230.333-59.167LOWER
122.417205.250-82.833LOWER
144.000165.667-21.667LOWER
211.750210.9170.833HIGHER
111.917111.6670.250HIGHER
238.000119.083118.917HIGHER
107.833188.250-80.417LOWER
118.333207.250-88.917LOWER
124.833173.833-49.000LOWER
118.167174.083-55.917LOWER
116.833151.750-34.917LOWER
184.667160.08324.583HIGHER
100.500125.417-24.917LOWER
197.500294.000-96.500LOWER
269.500245.75023.750HIGHER
215.750218.583-2.833LOWER
186.333283.000-96.667LOWER
204.833198.8336.000HIGHER
176.083219.917-43.833LOWER
197.583110.66786.917HIGHER
99.083206.917-107.833LOWER
228.083236.417-8.333LOWER
223.833247.667-23.833LOWER
245.083223.25021.833HIGHER
192.917209.500-16.583LOWER
244.167183.25060.917HIGHER
179.667213.917-34.250LOWER
258.250260.083-1.833LOWER
212.083255.917-43.833LOWER
222.083207.75014.333HIGHER
153.667199.833-46.167LOWER
225.917232.583-6.667LOWER
209.667217.583-7.917LOWER
228.583245.667-17.083LOWER
203.417238.750-35.333LOWER
224.500236.833-12.333LOWER
266.000263.5832.417HIGHER
266.917249.33317.583HIGHER
201.583156.83344.750HIGHER
160.417166.333-5.917LOWER
146.750155.583-8.833LOWER
167.000244.583-77.583LOWER
238.750234.6674.083HIGHER
210.333189.50020.833HIGHER
183.250135.75047.500HIGHER
165.000195.083-30.083LOWER
195.417199.167-3.750LOWER
193.750186.5007.250HIGHER
180.917157.66723.250HIGHER
110.583127.083-16.500LOWER
114.833237.333-122.500LOWER
270.750250.33320.417HIGHER
231.833243.917-12.083LOWER
269.000270.583-1.583LOWER
221.833232.750-10.917LOWER
236.917221.75015.167HIGHER
119.000109.4179.583HIGHER
168.167181.750-13.583LOWER
217.167241.583-24.417LOWER
286.250256.58329.667HIGHER
179.167188.000-8.833LOWER
181.500264.167-82.667LOWER
277.750252.58325.167HIGHER
249.583184.83364.750HIGHER
239.167189.25049.917HIGHER
236.667187.00049.667HIGHER
226.500200.00026.500HIGHER
219.833203.00016.833HIGHER
182.833170.25012.583HIGHER
171.833219.167-47.333LOWER
214.333240.083-25.750LOWER
243.083227.66715.417HIGHER
240.833244.500-3.667LOWER
241.250219.83321.417HIGHER
246.917179.58367.333HIGHER
204.667164.91739.750HIGHER
159.167199.250-40.083LOWER
208.500188.41720.083HIGHER
120.75082.66738.083HIGHER
108.000173.750-65.750LOWER
190.833212.417-21.583LOWER
222.917209.08313.833HIGHER
113.083151.417-38.333LOWER
152.417152.750-0.333LOWER
157.833182.333-24.500LOWER
134.167105.91728.250HIGHER
164.750155.0839.667HIGHER
244.167263.167-19.000LOWER
220.333228.333-8.000LOWER
235.917206.50029.417HIGHER
215.250206.8338.417HIGHER
165.500150.83314.667HIGHER
193.417231.000-37.583LOWER
285.500242.75042.750HIGHER
168.417213.000-44.583LOWER
180.917219.667-38.750LOWER
187.833223.750-35.917LOWER
241.417203.25038.167HIGHER
223.500187.08336.417HIGHER
223.333160.66762.667HIGHER
147.500170.917-23.417LOWER
208.417256.417-48.000LOWER
278.083270.1677.917HIGHER
261.667203.66758.000HIGHER
256.750228.41728.333HIGHER
284.750208.08376.667HIGHER
221.167200.75020.417HIGHER
210.333276.167-65.833LOWER
276.667246.66730.000HIGHER
244.083231.58312.500HIGHER
244.833203.75041.083HIGHER
210.417169.08341.333HIGHER
193.500188.5834.917HIGHER
113.58387.66725.917HIGHER
123.167137.000-13.833LOWER
214.750218.167-3.417LOWER
245.833231.50014.333HIGHER
224.917194.91730.000HIGHER
232.333213.08319.250HIGHER
185.917236.750-50.833LOWER
250.500219.33331.167HIGHER
263.583269.333-5.750LOWER
258.500267.250-8.750LOWER
256.583250.2506.333HIGHER
260.417257.5002.917HIGHER
242.583199.66742.917HIGHER
201.917206.583-4.667LOWER
225.333218.4176.917HIGHER
241.917247.333-5.417LOWER
260.667240.66720.000HIGHER
244.417199.00045.417HIGHER
227.583193.91733.667HIGHER
223.083218.6674.417HIGHER
151.167107.08344.083HIGHER
173.500127.08346.417HIGHER
131.417158.333-26.917LOWER
188.500217.667-29.167LOWER
205.167234.167-29.000LOWER
285.500216.50069.000HIGHER
237.750232.3335.417HIGHER
247.000222.66724.333HIGHER
152.167198.083-45.917LOWER
220.583238.333-17.750LOWER
191.417213.417-22.000LOWER
133.250187.500-54.250LOWER
195.583238.333-42.750LOWER
238.083249.250-11.167LOWER
242.500228.75013.750HIGHER
234.167205.41728.750HIGHER
179.750166.75013.000HIGHER
136.167187.583-51.417LOWER
115.250168.917-53.667LOWER
174.417246.667-72.250LOWER
95.083137.250-42.167LOWER
88.16785.0833.083HIGHER
115.417106.0009.417HIGHER
159.417249.917-90.500LOWER
216.167222.500-6.333LOWER
235.583232.1673.417HIGHER
112.417140.917-28.500LOWER
162.500213.083-50.583LOWER
201.583148.00053.583HIGHER
138.167120.33317.833HIGHER
144.250161.083-16.833LOWER
182.917177.0835.833HIGHER
230.500188.08342.417HIGHER
240.000205.91734.083HIGHER
264.417261.5002.917HIGHER
217.833240.917-23.083LOWER
199.917157.00042.917HIGHER
105.583142.917-37.333LOWER
126.000106.66719.333HIGHER
118.750129.833-11.083LOWER
168.333168.2500.083HIGHER
117.583181.083-63.500LOWER
110.667125.583-14.917LOWER
93.917148.000-54.083LOWER
130.167114.50015.667HIGHER
128.667166.333-37.667LOWER
161.833191.917-30.083LOWER
218.583273.833-55.250LOWER
228.833214.50014.333HIGHER
114.583122.083-7.500LOWER
133.250149.250-16.000LOWER
145.750199.833-54.083LOWER
168.167117.91750.250HIGHER
143.167182.000-38.833LOWER
221.417242.750-21.333LOWER
175.667210.667-35.000LOWER
240.000237.0003.000HIGHER
270.500251.75018.750HIGHER
233.917200.00033.917HIGHER
100.41791.1679.250HIGHER
124.667197.500-72.833LOWER
173.750224.667-50.917LOWER
151.167215.583-64.417LOWER
201.583246.833-45.250LOWER
128.833160.083-31.250LOWER
125.667169.583-43.917LOWER
111.167143.333-32.167LOWER
106.750155.833-49.083LOWER
185.083272.833-87.750LOWER
146.167225.417-79.250LOWER
151.333230.167-78.833LOWER
236.833238.000-1.167LOWER
109.500229.583-120.083LOWER
210.500177.00033.500HIGHER
118.917127.250-8.333LOWER
144.167215.417-71.250LOWER
107.000161.083-54.083LOWER
113.417149.500-36.083LOWER
95.250169.750-74.500LOWER
113.333155.833-42.500LOWER
122.667219.667-97.000LOWER
223.417210.00013.417HIGHER
239.083264.167-25.083LOWER
224.833286.583-61.750LOWER
162.167233.833-71.667LOWER
253.750254.750-1.000LOWER
216.667241.500-24.833LOWER
143.667163.917-20.250LOWER
129.167184.167-55.000LOWER
163.083273.417-110.333LOWER
219.750229.250-9.500LOWER
207.500238.833-31.333LOWER
193.667227.417-33.750LOWER
156.417221.833-65.417LOWER
169.083180.917-11.833LOWER
93.583160.417-66.833LOWER
241.500286.583-45.083LOWER
221.833272.417-50.583LOWER
246.250257.250-11.000LOWER
205.917250.417-44.500LOWER
179.500232.583-53.083LOWER
86.583193.583-107.000LOWER
155.500236.000-80.500LOWER
208.083270.083-62.000LOWER
172.583277.083-104.500LOWER
249.667317.917-68.250LOWER
177.333227.000-49.667LOWER
176.083283.083-107.000LOWER
182.250255.667-73.417LOWER
186.333269.000-82.667LOWER
129.583203.333-73.750LOWER
127.000214.583-87.583LOWER
252.667334.500-81.833LOWER
170.083286.833-116.750LOWER
209.333287.583-78.250LOWER
236.083333.667-97.583LOWER
292.500299.667-7.167LOWER
244.417310.333-65.917LOWER
309.167330.167-21.000LOWER
229.583261.750-32.167LOWER
159.750256.417-96.667LOWER
153.583258.333-104.750LOWER
117.833218.000-100.167LOWER
220.583277.583-57.000LOWER
198.667287.083-88.417LOWER
197.000220.750-23.750LOWER
197.250282.667-85.417LOWER
137.833241.000-103.167LOWER
216.167297.833-81.667LOWER
242.083273.917-31.833LOWER
222.250240.083-17.833LOWER
201.833296.583-94.750LOWER
205.833283.500-77.667LOWER
225.333264.333-39.000LOWER
215.083244.667-29.583LOWER
159.750195.083-35.333LOWER
113.333179.833-66.500LOWER
115.333122.917-7.583LOWER
129.417222.167-92.750LOWER
157.083196.167-39.083LOWER
136.750261.000-124.250LOWER
188.917287.250-98.333LOWER
203.167239.167-36.000LOWER
115.083154.333-39.250LOWER
139.083207.833-68.750LOWER
167.833283.167-115.333LOWER
275.083352.833-77.750LOWER
250.167236.66713.500HIGHER
115.833234.083-118.250LOWER
137.500264.583-127.083LOWER
156.750233.167-76.417LOWER
116.833161.000-44.167LOWER
200.417210.000-9.583LOWER
143.083255.667-112.583LOWER
136.667161.417-24.750LOWER
140.750206.750-66.000LOWER
137.417159.917-22.500LOWER
117.500143.667-26.167LOWER
111.750180.583-68.833LOWER
216.167261.083-44.917LOWER
2020 · 361 complete days

Scroll the table sideways if needed to see every column.

2020: mean estimated intensity in gCO₂/kWh. Difference = overnight minus midday.
Date (UTC)OvernightMiddayDifferenceOvernight was
173.833219.833-46.000LOWER
141.583209.250-67.667LOWER
110.583195.083-84.500LOWER
129.500212.000-82.500LOWER
156.500194.167-37.667LOWER
156.167203.667-47.500LOWER
137.167199.667-62.500LOWER
106.167294.833-188.667LOWER
198.750289.750-91.000LOWER
207.250257.333-50.083LOWER
121.583159.083-37.500LOWER
125.917183.667-57.750LOWER
154.417200.167-45.750LOWER
149.167223.500-74.333LOWER
121.917179.167-57.250LOWER
150.583179.833-29.250LOWER
133.500223.083-89.583LOWER
139.500239.833-100.333LOWER
223.917253.833-29.917LOWER
241.917312.750-70.833LOWER
282.917325.583-42.667LOWER
308.667325.583-16.917LOWER
328.750357.750-29.000LOWER
240.250236.5833.667HIGHER
156.833185.250-28.417LOWER
139.667235.000-95.333LOWER
165.000182.333-17.333LOWER
113.000174.250-61.250LOWER
102.583181.167-78.583LOWER
105.167162.500-57.333LOWER
115.083174.000-58.917LOWER
120.250200.500-80.250LOWER
231.500283.083-51.583LOWER
266.250306.250-40.000LOWER
249.167213.83335.333HIGHER
110.583140.083-29.500LOWER
114.417195.333-80.917LOWER
116.083174.833-58.750LOWER
110.333163.417-53.083LOWER
108.167193.667-85.500LOWER
135.083256.250-121.167LOWER
250.833202.91747.917HIGHER
146.333155.083-8.750LOWER
119.167139.167-20.000LOWER
111.500163.417-51.917LOWER
101.167155.583-54.417LOWER
120.083211.917-91.833LOWER
109.500174.833-65.333LOWER
122.583167.167-44.583LOWER
109.917118.333-8.417LOWER
135.750126.8338.917HIGHER
210.417204.8335.583HIGHER
131.083228.083-97.000LOWER
144.667186.750-42.083LOWER
212.000193.16718.833HIGHER
211.833208.1673.667HIGHER
116.667111.6675.000HIGHER
103.917107.000-3.083LOWER
179.917235.833-55.917LOWER
180.333269.333-89.000LOWER
298.250345.917-47.667LOWER
351.167308.41742.750HIGHER
304.167295.4178.750HIGHER
237.250146.41790.833HIGHER
93.833113.333-19.500LOWER
123.667186.167-62.500LOWER
108.250139.083-30.833LOWER
134.250135.333-1.083LOWER
90.667123.500-32.833LOWER
117.583258.750-141.167LOWER
136.333137.917-1.583LOWER
81.000143.750-62.750LOWER
246.167186.91759.250HIGHER
113.583168.250-54.667LOWER
135.167238.333-103.167LOWER
246.667280.583-33.917LOWER
217.167193.00024.167HIGHER
117.50099.41718.083HIGHER
144.750139.7505.000HIGHER
117.500132.083-14.583LOWER
121.333116.7504.583HIGHER
145.917223.500-77.583LOWER
294.667230.00064.667HIGHER
252.167168.83383.333HIGHER
120.083120.500-0.417LOWER
100.750132.083-31.333LOWER
181.417198.667-17.250LOWER
216.417222.750-6.333LOWER
237.167227.8339.333HIGHER
188.250142.08346.167HIGHER
219.167239.500-20.333LOWER
216.083143.16772.917HIGHER
122.58393.66728.917HIGHER
105.750123.250-17.500LOWER
230.750159.66771.083HIGHER
214.167222.333-8.167LOWER
260.750182.41778.333HIGHER
187.750181.8335.917HIGHER
149.167140.5008.667HIGHER
197.333163.50033.833HIGHER
109.250122.750-13.500LOWER
196.167164.41731.750HIGHER
177.333151.91725.417HIGHER
204.333154.66749.667HIGHER
126.000110.58315.417HIGHER
120.333196.583-76.250LOWER
162.500103.75058.750HIGHER
97.75091.4176.333HIGHER
93.25086.8336.417HIGHER
102.500116.833-14.333LOWER
170.333173.250-2.917LOWER
204.083177.83326.250HIGHER
187.667159.41728.250HIGHER
187.667153.58334.083HIGHER
189.667201.083-11.417LOWER
161.250213.250-52.000LOWER
174.333131.33343.000HIGHER
90.583131.083-40.500LOWER
121.417127.417-6.000LOWER
115.750144.917-29.167LOWER
185.250200.000-14.750LOWER
174.417142.91731.500HIGHER
100.917107.333-6.417LOWER
153.417138.33315.083HIGHER
173.250170.9172.333HIGHER
192.417166.66725.750HIGHER
196.417147.75048.667HIGHER
104.66784.66720.000HIGHER
85.417108.583-23.167LOWER
150.083132.58317.500HIGHER
133.083150.500-17.417LOWER
154.250124.08330.167HIGHER
150.500118.83331.667HIGHER
122.250115.2507.000HIGHER
145.41796.91748.500HIGHER
110.000102.2507.750HIGHER
123.750141.333-17.583LOWER
187.083132.50054.583HIGHER
129.917156.417-26.500LOWER
99.58388.75010.833HIGHER
86.58373.16713.417HIGHER
75.66761.41714.250HIGHER
170.000102.91767.083HIGHER
149.167160.917-11.750LOWER
201.333184.08317.250HIGHER
147.000148.333-1.333LOWER
149.000126.25022.750HIGHER
135.667104.50031.167HIGHER
121.000114.8336.167HIGHER
156.083151.8334.250HIGHER
205.333182.50022.833HIGHER
140.250169.917-29.667LOWER
124.083184.000-59.917LOWER
112.91787.16725.750HIGHER
92.41799.667-7.250LOWER
121.667135.417-13.750LOWER
137.917213.583-75.667LOWER
237.917235.2502.667HIGHER
106.917108.500-1.583LOWER
114.500155.250-40.750LOWER
174.500175.667-1.167LOWER
195.167189.0836.083HIGHER
232.583226.2506.333HIGHER
260.417254.1676.250HIGHER
270.167247.83322.333HIGHER
226.417245.167-18.750LOWER
197.417159.75037.667HIGHER
161.083140.16720.917HIGHER
101.91778.91723.000HIGHER
132.250122.00010.250HIGHER
155.500194.333-38.833LOWER
187.250202.667-15.417LOWER
197.583167.33330.250HIGHER
187.667197.833-10.167LOWER
150.83383.41767.417HIGHER
106.25082.83323.417HIGHER
107.583106.1671.417HIGHER
117.667226.667-109.000LOWER
201.083217.917-16.833LOWER
220.667228.917-8.250LOWER
183.083114.91768.167HIGHER
94.750123.500-28.750LOWER
79.25082.500-3.250LOWER
78.000143.000-65.000LOWER
183.000244.667-61.667LOWER
252.000264.500-12.500LOWER
181.667240.333-58.667LOWER
188.083195.917-7.833LOWER
153.583172.250-18.667LOWER
189.333157.00032.333HIGHER
179.667199.500-19.833LOWER
194.417223.000-28.583LOWER
235.833235.3330.500HIGHER
191.833204.917-13.083LOWER
190.250187.6672.583HIGHER
145.917146.917-1.000LOWER
135.833131.5834.250HIGHER
179.667200.667-21.000LOWER
227.000230.083-3.083LOWER
232.750188.50044.250HIGHER
200.917209.667-8.750LOWER
222.333231.417-9.083LOWER
114.167150.500-36.333LOWER
137.250114.50022.750HIGHER
127.667154.917-27.250LOWER
125.500127.833-2.333LOWER
139.750196.083-56.333LOWER
238.083183.25054.833HIGHER
151.250135.91715.333HIGHER
163.000175.667-12.667LOWER
173.250157.00016.250HIGHER
224.917203.08321.833HIGHER
195.917138.50057.417HIGHER
94.250141.667-47.417LOWER
205.250220.417-15.167LOWER
217.250213.2504.000HIGHER
202.000165.33336.667HIGHER
144.667141.5833.083HIGHER
185.667219.167-33.500LOWER
240.500223.08317.417HIGHER
269.917226.25043.667HIGHER
244.417243.3331.083HIGHER
249.000255.333-6.333LOWER
224.500248.417-23.917LOWER
209.250241.750-32.500LOWER
246.000251.000-5.000LOWER
254.167223.75030.417HIGHER
260.167212.66747.500HIGHER
117.750126.000-8.250LOWER
101.583110.750-9.167LOWER
108.583105.0833.500HIGHER
132.167223.333-91.167LOWER
224.917250.583-25.667LOWER
166.083139.33326.750HIGHER
119.083234.750-115.667LOWER
321.333307.16714.167HIGHER
185.000205.667-20.667LOWER
152.750202.333-49.583LOWER
271.500271.1670.333HIGHER
288.667260.25028.417HIGHER
211.583199.33312.250HIGHER
123.917165.083-41.167LOWER
132.167161.917-29.750LOWER
108.500135.833-27.333LOWER
215.417243.667-28.250LOWER
215.917199.00016.917HIGHER
177.167211.417-34.250LOWER
141.250200.083-58.833LOWER
258.000241.50016.500HIGHER
190.250167.50022.750HIGHER
92.583100.083-7.500LOWER
89.66794.667-5.000LOWER
191.167246.500-55.333LOWER
295.167292.5832.583HIGHER
262.333224.66737.667HIGHER
203.750215.833-12.083LOWER
196.417175.66720.750HIGHER
114.417114.0000.417HIGHER
131.333177.250-45.917LOWER
242.000255.583-13.583LOWER
235.417185.25050.167HIGHER
208.167255.250-47.083LOWER
163.583220.083-56.500LOWER
120.250127.417-7.167LOWER
98.75099.000-0.250LOWER
97.333163.333-66.000LOWER
186.083255.917-69.833LOWER
264.667271.667-7.000LOWER
163.500207.167-43.667LOWER
195.750266.167-70.417LOWER
159.333172.167-12.833LOWER
120.667176.667-56.000LOWER
96.250170.500-74.250LOWER
157.083201.333-44.250LOWER
133.417179.917-46.500LOWER
89.250157.250-68.000LOWER
123.417184.833-61.417LOWER
168.417146.58321.833HIGHER
81.667125.250-43.583LOWER
94.000174.167-80.167LOWER
204.750216.417-11.667LOWER
162.917192.000-29.083LOWER
128.167211.167-83.000LOWER
177.917247.167-69.250LOWER
245.667274.417-28.750LOWER
195.167234.667-39.500LOWER
200.917248.250-47.333LOWER
162.250153.4178.833HIGHER
85.917138.500-52.583LOWER
109.500206.417-96.917LOWER
95.250183.500-88.250LOWER
137.417180.667-43.250LOWER
103.250127.667-24.417LOWER
90.417113.750-23.333LOWER
114.000138.667-24.667LOWER
109.250163.500-54.250LOWER
85.500134.500-49.000LOWER
71.333162.750-91.417LOWER
84.167187.333-103.167LOWER
82.750102.833-20.083LOWER
83.583110.000-26.417LOWER
73.333148.750-75.417LOWER
114.583179.667-65.083LOWER
167.250261.167-93.917LOWER
191.833262.750-70.917LOWER
228.750239.917-11.167LOWER
186.500234.750-48.250LOWER
161.500226.917-65.417LOWER
201.833266.833-65.000LOWER
220.000242.167-22.167LOWER
142.833155.750-12.917LOWER
67.083145.583-78.500LOWER
101.250151.167-49.917LOWER
112.750109.3333.417HIGHER
80.083118.000-37.917LOWER
74.500158.833-84.333LOWER
88.750138.833-50.083LOWER
90.083119.667-29.583LOWER
98.917186.333-87.417LOWER
158.083197.333-39.250LOWER
101.083117.500-16.417LOWER
108.417170.500-62.083LOWER
137.083210.250-73.167LOWER
130.417176.333-45.917LOWER
142.667257.167-114.500LOWER
246.667289.583-42.917LOWER
262.917301.000-38.083LOWER
190.750240.917-50.167LOWER
203.917269.417-65.500LOWER
167.667204.417-36.750LOWER
125.833243.083-117.250LOWER
196.833267.750-70.917LOWER
155.083256.417-101.333LOWER
104.500196.917-92.417LOWER
108.250242.250-134.000LOWER
203.667287.500-83.833LOWER
247.917276.000-28.083LOWER
201.583272.500-70.917LOWER
212.000275.500-63.500LOWER
156.167256.417-100.250LOWER
121.500284.750-163.250LOWER
181.667238.083-56.417LOWER
156.417148.1678.250HIGHER
95.667174.833-79.167LOWER
110.750214.417-103.667LOWER
103.333175.667-72.333LOWER
118.833200.583-81.750LOWER
74.000144.917-70.917LOWER
76.167107.583-31.417LOWER
70.833143.083-72.250LOWER
98.250220.667-122.417LOWER
102.583299.667-197.083LOWER
163.250193.500-30.250LOWER
65.583146.833-81.250LOWER
109.583165.500-55.917LOWER
65.750104.083-38.333LOWER
79.167151.833-72.667LOWER
169.917264.750-94.833LOWER
184.833235.333-50.500LOWER
167.833266.083-98.250LOWER
193.250251.167-57.917LOWER
2021 · 360 complete days

Scroll the table sideways if needed to see every column.

2021: mean estimated intensity in gCO₂/kWh. Difference = overnight minus midday.
Date (UTC)OvernightMiddayDifferenceOvernight was
166.083232.667-66.583LOWER
179.167261.500-82.333LOWER
154.917231.583-76.667LOWER
121.417241.833-120.417LOWER
151.750258.500-106.750LOWER
202.167289.583-87.417LOWER
259.167290.500-31.333LOWER
269.917296.000-26.083LOWER
248.417268.917-20.500LOWER
200.583271.083-70.500LOWER
115.000215.000-100.000LOWER
148.583282.917-134.333LOWER
273.917295.333-21.417LOWER
234.667275.750-41.083LOWER
282.667284.417-1.750LOWER
114.583178.833-64.250LOWER
85.417211.583-126.167LOWER
114.250220.417-106.167LOWER
129.833225.000-95.167LOWER
126.583236.583-110.000LOWER
95.583165.000-69.417LOWER
97.250237.833-140.583LOWER
240.333271.917-31.583LOWER
156.917249.500-92.583LOWER
196.083274.167-78.083LOWER
180.417309.750-129.333LOWER
150.083251.000-100.917LOWER
131.083229.250-98.167LOWER
100.333166.667-66.333LOWER
153.667215.833-62.167LOWER
214.583287.000-72.417LOWER
137.750201.250-63.500LOWER
122.583236.000-113.417LOWER
154.667213.667-59.000LOWER
152.750227.583-74.833LOWER
148.750168.167-19.417LOWER
93.333152.250-58.917LOWER
95.083197.750-102.667LOWER
166.167253.667-87.500LOWER
203.333285.167-81.833LOWER
244.167267.000-22.833LOWER
137.750186.083-48.333LOWER
102.917142.167-39.250LOWER
106.333150.250-43.917LOWER
123.333200.000-76.667LOWER
145.667183.250-37.583LOWER
126.833180.750-53.917LOWER
120.000163.917-43.917LOWER
118.667156.083-37.417LOWER
83.500118.167-34.667LOWER
113.333196.417-83.083LOWER
193.333232.917-39.583LOWER
151.333118.58332.750HIGHER
96.667139.500-42.833LOWER
89.750201.083-111.333LOWER
184.750196.000-11.250LOWER
211.167228.667-17.500LOWER
250.917226.66724.250HIGHER
256.083285.917-29.833LOWER
252.000301.833-49.833LOWER
300.333321.500-21.167LOWER
256.250263.000-6.750LOWER
218.833307.333-88.500LOWER
266.917274.917-8.000LOWER
253.333261.417-8.083LOWER
244.667250.417-5.750LOWER
226.333208.91717.417HIGHER
95.500156.000-60.500LOWER
93.083107.250-14.167LOWER
87.00099.083-12.083LOWER
90.08382.3337.750HIGHER
74.917112.583-37.667LOWER
101.167210.417-109.250LOWER
181.417164.33317.083HIGHER
130.333200.667-70.333LOWER
199.250218.750-19.500LOWER
184.250254.500-70.250LOWER
235.167190.75044.417HIGHER
157.500205.917-48.417LOWER
204.583225.583-21.000LOWER
194.167133.75060.417HIGHER
130.917139.083-8.167LOWER
130.667107.16723.500HIGHER
74.25099.917-25.667LOWER
79.66781.417-1.750LOWER
73.75070.6673.083HIGHER
93.75068.08325.667HIGHER
115.417151.750-36.333LOWER
198.417195.5002.917HIGHER
121.500170.417-48.917LOWER
161.500141.16720.333HIGHER
128.500167.833-39.333LOWER
175.83365.833110.000HIGHER
74.50055.50019.000HIGHER
86.417107.250-20.833LOWER
139.250201.083-61.833LOWER
201.917132.00069.917HIGHER
147.833210.750-62.917LOWER
224.000202.66721.333HIGHER
194.000184.0839.917HIGHER
233.333239.667-6.333LOWER
279.833251.66728.167HIGHER
290.917251.66739.250HIGHER
263.833224.66739.167HIGHER
252.250220.25032.000HIGHER
253.250172.08381.167HIGHER
221.167207.16714.000HIGHER
279.333235.25044.083HIGHER
290.833232.33358.500HIGHER
232.500187.08345.417HIGHER
238.333192.91745.417HIGHER
251.333184.25067.083HIGHER
193.833141.66752.167HIGHER
159.333146.66712.667HIGHER
188.500180.6677.833HIGHER
218.750200.75018.000HIGHER
172.250179.000-6.750LOWER
186.167205.167-19.000LOWER
244.000231.66712.333HIGHER
241.667217.50024.167HIGHER
238.250208.83329.417HIGHER
207.66792.833114.833HIGHER
64.16794.917-30.750LOWER
116.333182.917-66.583LOWER
215.250193.25022.000HIGHER
205.917211.667-5.750LOWER
158.500106.33352.167HIGHER
106.66798.1678.500HIGHER
111.16798.00013.167HIGHER
143.417173.500-30.083LOWER
180.500216.417-35.917LOWER
226.083233.000-6.917LOWER
216.500253.750-37.250LOWER
223.250210.83312.417HIGHER
208.000203.5834.417HIGHER
219.333222.583-3.250LOWER
213.917224.583-10.667LOWER
224.333200.75023.583HIGHER
209.917100.167109.750HIGHER
71.58396.583-25.000LOWER
80.000155.167-75.167LOWER
153.75075.33378.417HIGHER
115.583140.917-25.333LOWER
97.333160.417-63.083LOWER
177.750171.3336.417HIGHER
192.917185.2507.667HIGHER
217.833210.5007.333HIGHER
204.500164.50040.000HIGHER
192.667117.50075.167HIGHER
166.667106.66760.000HIGHER
124.500143.667-19.167LOWER
111.583128.750-17.167LOWER
133.583156.250-22.667LOWER
153.917162.917-9.000LOWER
171.833139.83332.000HIGHER
167.250176.750-9.500LOWER
195.917172.16723.750HIGHER
152.917145.8337.083HIGHER
142.000127.16714.833HIGHER
121.250131.417-10.167LOWER
97.583105.000-7.417LOWER
110.41798.33312.083HIGHER
132.41796.25036.167HIGHER
91.000123.500-32.500LOWER
189.000142.66746.333HIGHER
103.167161.250-58.083LOWER
199.833211.083-11.250LOWER
159.083186.167-27.083LOWER
150.250179.083-28.833LOWER
130.500198.000-67.500LOWER
133.917174.500-40.583LOWER
150.833183.167-32.333LOWER
212.667214.833-2.167LOWER
209.000200.3338.667HIGHER
155.833168.667-12.833LOWER
184.167195.167-11.000LOWER
173.417191.083-17.667LOWER
192.500247.417-54.917LOWER
204.583214.583-10.000LOWER
171.333206.250-34.917LOWER
184.583199.167-14.583LOWER
246.333220.41725.917HIGHER
186.083173.75012.333HIGHER
165.833188.500-22.667LOWER
128.917189.583-60.667LOWER
136.417155.250-18.833LOWER
123.750187.333-63.583LOWER
198.417215.250-16.833LOWER
242.833238.5834.250HIGHER
246.750243.5003.250HIGHER
245.083230.75014.333HIGHER
242.000242.417-0.417LOWER
214.000200.00014.000HIGHER
173.250138.50034.750HIGHER
119.833168.250-48.417LOWER
176.833154.91721.917HIGHER
167.000139.83327.167HIGHER
186.750187.250-0.500LOWER
234.583207.75026.833HIGHER
237.250211.75025.500HIGHER
236.583225.91710.667HIGHER
258.333234.91723.417HIGHER
251.250218.83332.417HIGHER
166.833212.583-45.750LOWER
216.000234.583-18.583LOWER
245.083226.08319.000HIGHER
226.000242.250-16.250LOWER
176.000151.58324.417HIGHER
88.250116.250-28.000LOWER
195.500214.333-18.833LOWER
133.167205.250-72.083LOWER
206.417211.417-5.000LOWER
224.500241.833-17.333LOWER
231.167228.5832.583HIGHER
236.333203.00033.333HIGHER
183.250126.83356.417HIGHER
112.583116.250-3.667LOWER
95.167134.167-39.000LOWER
105.66795.16710.500HIGHER
145.167183.917-38.750LOWER
187.083220.083-33.000LOWER
230.000164.75065.250HIGHER
196.417123.41773.000HIGHER
116.33379.66736.667HIGHER
126.167159.667-33.500LOWER
215.083158.08357.000HIGHER
81.917147.250-65.333LOWER
96.583151.500-54.917LOWER
124.917161.083-36.167LOWER
217.083243.083-26.000LOWER
233.750224.4179.333HIGHER
177.167222.583-45.417LOWER
211.083192.75018.333HIGHER
191.667208.167-16.500LOWER
198.667214.833-16.167LOWER
201.417197.0004.417HIGHER
125.417150.083-24.667LOWER
174.333212.917-38.583LOWER
138.667145.000-6.333LOWER
167.667148.75018.917HIGHER
136.667184.667-48.000LOWER
146.250206.833-60.583LOWER
168.917218.500-49.583LOWER
211.583234.667-23.083LOWER
230.917234.167-3.250LOWER
211.917210.1671.750HIGHER
196.917183.75013.167HIGHER
249.250239.8339.417HIGHER
230.583218.75011.833HIGHER
201.500206.083-4.583LOWER
231.417245.500-14.083LOWER
232.833242.417-9.583LOWER
191.750161.66730.083HIGHER
215.083255.250-40.167LOWER
225.750235.750-10.000LOWER
227.583263.417-35.833LOWER
265.583247.08318.500HIGHER
268.250247.83320.417HIGHER
184.917204.667-19.750LOWER
250.167233.75016.417HIGHER
180.417226.167-45.750LOWER
249.083218.08331.000HIGHER
230.417218.41712.000HIGHER
152.333158.250-5.917LOWER
71.750165.667-93.917LOWER
118.750111.6677.083HIGHER
189.583219.750-30.167LOWER
142.917105.66737.250HIGHER
99.08384.66714.417HIGHER
83.750155.833-72.083LOWER
118.583102.25016.333HIGHER
92.500123.833-31.333LOWER
70.41785.083-14.667LOWER
116.833123.833-7.000LOWER
73.91776.500-2.583LOWER
92.000173.417-81.417LOWER
112.833114.083-1.250LOWER
100.583195.167-94.583LOWER
164.917201.167-36.250LOWER
185.750242.583-56.833LOWER
186.167223.750-37.583LOWER
184.583158.33326.250HIGHER
146.500210.750-64.250LOWER
138.417246.250-107.833LOWER
199.333218.083-18.750LOWER
140.583138.0002.583HIGHER
128.000257.917-129.917LOWER
230.917247.333-16.417LOWER
128.917181.833-52.917LOWER
147.333165.667-18.333LOWER
113.083114.167-1.083LOWER
80.417123.583-43.167LOWER
70.333106.500-36.167LOWER
72.167185.583-113.417LOWER
174.583138.41736.167HIGHER
64.083100.833-36.750LOWER
93.083176.417-83.333LOWER
119.417133.333-13.917LOWER
58.750129.833-71.083LOWER
65.083157.750-92.667LOWER
98.833127.167-28.333LOWER
66.250116.667-50.417LOWER
73.75077.000-3.250LOWER
60.667109.500-48.833LOWER
166.167253.917-87.750LOWER
216.833241.750-24.917LOWER
80.667182.000-101.333LOWER
119.750219.583-99.833LOWER
84.58395.417-10.833LOWER
62.66781.250-18.583LOWER
167.750242.250-74.500LOWER
115.833203.250-87.417LOWER
174.917269.167-94.250LOWER
208.333248.167-39.833LOWER
82.417133.333-50.917LOWER
91.250238.167-146.917LOWER
136.000227.167-91.167LOWER
231.750263.167-31.417LOWER
204.083225.917-21.833LOWER
106.000174.333-68.333LOWER
129.583182.333-52.750LOWER
109.167205.000-95.833LOWER
153.167188.000-34.833LOWER
89.250129.750-40.500LOWER
129.917238.417-108.500LOWER
239.667257.250-17.583LOWER
237.917255.333-17.417LOWER
153.000210.417-57.417LOWER
106.667165.083-58.417LOWER
153.750151.1672.583HIGHER
105.500191.083-85.583LOWER
223.250250.750-27.500LOWER
93.833220.083-126.250LOWER
70.833178.833-108.000LOWER
93.167234.417-141.250LOWER
149.750243.583-93.833LOWER
156.333132.58323.750HIGHER
95.417202.417-107.000LOWER
199.917221.500-21.583LOWER
172.750196.667-23.917LOWER
83.583218.167-134.583LOWER
163.167260.333-97.167LOWER
102.500209.000-106.500LOWER
189.000222.500-33.500LOWER
100.083192.000-91.917LOWER
89.083249.000-159.917LOWER
218.000215.4172.583HIGHER
118.583222.500-103.917LOWER
249.167275.250-26.083LOWER
270.083290.250-20.167LOWER
222.000283.500-61.500LOWER
247.333254.750-7.417LOWER
238.333300.750-62.417LOWER
288.500304.167-15.667LOWER
246.250259.083-12.833LOWER
180.417210.250-29.833LOWER
119.417170.417-51.000LOWER
151.08394.83356.250HIGHER
49.00092.833-43.833LOWER
66.41792.833-26.417LOWER
2022 · 364 complete days

Scroll the table sideways if needed to see every column.

2022: mean estimated intensity in gCO₂/kWh. Difference = overnight minus midday.
Date (UTC)OvernightMiddayDifferenceOvernight was
63.66760.0833.583HIGHER
48.16783.833-35.667LOWER
47.250111.417-64.167LOWER
77.583131.917-54.333LOWER
56.083165.083-109.000LOWER
178.750164.16714.583HIGHER
72.583159.917-87.333LOWER
112.250141.667-29.417LOWER
78.583187.417-108.833LOWER
213.333233.250-19.917LOWER
169.083267.833-98.750LOWER
212.417251.000-38.583LOWER
206.000245.250-39.250LOWER
243.500282.917-39.417LOWER
262.583264.000-1.417LOWER
145.667184.667-39.000LOWER
169.250261.667-92.417LOWER
249.750237.25012.500HIGHER
131.333178.167-46.833LOWER
143.917237.917-94.000LOWER
202.000242.833-40.833LOWER
177.417212.250-34.833LOWER
194.833234.750-39.917LOWER
207.917295.417-87.500LOWER
291.333288.1673.167HIGHER
215.667202.08313.583HIGHER
94.417187.833-93.417LOWER
250.583189.16761.417HIGHER
59.91777.833-17.917LOWER
165.833178.667-12.833LOWER
61.750163.750-102.000LOWER
80.417116.417-36.000LOWER
92.750213.083-120.333LOWER
120.083176.500-56.417LOWER
77.833119.083-41.250LOWER
66.33385.583-19.250LOWER
64.16781.083-16.917LOWER
115.750172.917-57.167LOWER
69.167149.917-80.750LOWER
67.417167.917-100.500LOWER
129.333156.583-27.250LOWER
197.917233.750-35.833LOWER
66.33392.917-26.583LOWER
65.417161.083-95.667LOWER
95.083157.750-62.667LOWER
129.833165.417-35.583LOWER
55.333113.417-58.083LOWER
49.25085.000-35.750LOWER
77.000133.250-56.250LOWER
55.917190.333-134.417LOWER
71.583108.833-37.250LOWER
72.833130.333-57.500LOWER
110.833111.583-0.750LOWER
101.083131.500-30.417LOWER
106.083100.3335.750HIGHER
81.500193.917-112.417LOWER
127.83391.91735.917HIGHER
61.41761.0830.333HIGHER
80.333179.833-99.500LOWER
175.000237.000-62.000LOWER
127.000188.083-61.083LOWER
139.583211.833-72.250LOWER
193.750232.083-38.333LOWER
149.333178.250-28.917LOWER
131.083192.333-61.250LOWER
183.417193.000-9.583LOWER
82.250130.083-47.833LOWER
96.417135.667-39.250LOWER
96.000134.083-38.083LOWER
64.417109.583-45.167LOWER
66.50090.833-24.333LOWER
57.83387.417-29.583LOWER
154.167166.333-12.167LOWER
182.583194.583-12.000LOWER
189.833256.167-66.333LOWER
122.000137.250-15.250LOWER
194.250149.00045.250HIGHER
67.00045.66721.333HIGHER
63.417117.000-53.583LOWER
216.417235.500-19.083LOWER
210.333204.4175.917HIGHER
240.417239.3331.083HIGHER
253.917250.5833.333HIGHER
266.250248.08318.167HIGHER
231.000191.91739.083HIGHER
215.667225.583-9.917LOWER
276.833275.7501.083HIGHER
275.667290.167-14.500LOWER
228.417239.167-10.750LOWER
127.167145.083-17.917LOWER
153.500217.333-63.833LOWER
247.167253.083-5.917LOWER
241.083190.41750.667HIGHER
92.583145.833-53.250LOWER
103.000131.833-28.833LOWER
76.750113.750-37.000LOWER
82.000100.417-18.417LOWER
170.833180.083-9.250LOWER
135.083143.417-8.333LOWER
227.083195.83331.250HIGHER
143.00081.00062.000HIGHER
120.667197.000-76.333LOWER
189.417213.000-23.583LOWER
255.417245.00010.417HIGHER
238.750168.50070.250HIGHER
124.83389.75035.083HIGHER
106.25058.75047.500HIGHER
105.083143.833-38.750LOWER
246.667237.0839.583HIGHER
241.167186.58354.583HIGHER
206.500142.75063.750HIGHER
143.917117.50026.417HIGHER
72.33349.75022.583HIGHER
70.83383.917-13.083LOWER
206.750207.500-0.750LOWER
250.833229.08321.750HIGHER
255.000229.16725.833HIGHER
254.000245.4178.583HIGHER
274.917230.25044.667HIGHER
264.083206.33357.750HIGHER
239.750241.333-1.583LOWER
271.583248.25023.333HIGHER
261.167235.91725.250HIGHER
245.833202.50043.333HIGHER
244.750210.41734.333HIGHER
203.333189.41713.917HIGHER
276.833233.58343.250HIGHER
234.583162.58372.000HIGHER
193.667138.50055.167HIGHER
101.250100.9170.333HIGHER
106.583142.333-35.750LOWER
172.667140.91731.750HIGHER
90.08370.91719.167HIGHER
215.833191.08324.750HIGHER
243.000127.000116.000HIGHER
115.250184.750-69.500LOWER
192.167172.41719.750HIGHER
100.083166.000-65.917LOWER
178.667176.1672.500HIGHER
210.583181.83328.750HIGHER
115.750158.333-42.583LOWER
187.583143.91743.667HIGHER
239.917218.16721.750HIGHER
179.500172.8336.667HIGHER
152.75081.58371.167HIGHER
90.00083.5006.500HIGHER
66.75073.500-6.750LOWER
128.583134.917-6.333LOWER
98.250135.917-37.667LOWER
252.750235.50017.250HIGHER
261.500217.25044.250HIGHER
268.833236.16732.667HIGHER
272.750217.75055.000HIGHER
233.167169.41763.750HIGHER
136.500131.7504.750HIGHER
134.500169.250-34.750LOWER
174.833200.917-26.083LOWER
216.167227.250-11.083LOWER
188.750173.66715.083HIGHER
173.000177.167-4.167LOWER
114.00098.50015.500HIGHER
80.66764.83315.833HIGHER
88.66779.8338.833HIGHER
115.000183.583-68.583LOWER
225.750195.83329.917HIGHER
244.750208.50036.250HIGHER
235.917203.75032.167HIGHER
147.500101.08346.417HIGHER
164.333159.9174.417HIGHER
89.667147.667-58.000LOWER
199.917191.8338.083HIGHER
249.167220.08329.083HIGHER
264.583203.00061.583HIGHER
242.917238.4174.500HIGHER
247.667200.16747.500HIGHER
76.25080.917-4.667LOWER
92.75067.75025.000HIGHER
181.667185.667-4.000LOWER
171.167142.16729.000HIGHER
182.333203.417-21.083LOWER
279.917243.33336.583HIGHER
273.583209.66763.917HIGHER
185.750149.58336.167HIGHER
212.000168.00044.000HIGHER
153.333143.25010.083HIGHER
197.417220.500-23.083LOWER
176.083138.00038.083HIGHER
144.583185.500-40.917LOWER
224.417189.16735.250HIGHER
157.167166.417-9.250LOWER
200.250170.41729.833HIGHER
294.500206.33388.167HIGHER
174.917219.083-44.167LOWER
203.250195.0008.250HIGHER
243.083195.25047.833HIGHER
246.917184.75062.167HIGHER
252.333182.08370.250HIGHER
215.250160.25055.000HIGHER
218.167210.2507.917HIGHER
241.500185.50056.000HIGHER
207.583181.50026.083HIGHER
202.250232.833-30.583LOWER
274.750234.91739.833HIGHER
275.083146.833128.250HIGHER
83.50097.667-14.167LOWER
165.583156.8338.750HIGHER
207.917223.250-15.333LOWER
282.000239.83342.167HIGHER
282.750231.66751.083HIGHER
292.000230.08361.917HIGHER
225.250215.4179.833HIGHER
269.917203.91766.000HIGHER
316.583219.50097.083HIGHER
107.417115.083-7.667LOWER
112.750169.167-56.417LOWER
259.250197.58361.667HIGHER
241.500182.41759.083HIGHER
199.750130.75069.000HIGHER
126.583128.417-1.833LOWER
244.917208.83336.083HIGHER
261.333198.75062.583HIGHER
251.833194.91756.917HIGHER
277.583201.41776.167HIGHER
274.667200.00074.667HIGHER
260.500200.50060.000HIGHER
230.750183.41747.333HIGHER
265.250229.58335.667HIGHER
257.333228.50028.833HIGHER
224.583218.0006.583HIGHER
246.917189.83357.083HIGHER
182.917165.91717.000HIGHER
183.000110.25072.750HIGHER
155.917175.500-19.583LOWER
257.583200.41757.167HIGHER
258.667223.58335.083HIGHER
254.000212.66741.333HIGHER
261.333235.25026.083HIGHER
285.917240.08345.833HIGHER
304.250231.83372.417HIGHER
290.667232.50058.167HIGHER
273.917224.66749.250HIGHER
245.333231.58313.750HIGHER
244.833212.00032.833HIGHER
225.333224.9170.417HIGHER
254.583219.66734.917HIGHER
150.333168.167-17.833LOWER
158.667197.500-38.833LOWER
133.500229.250-95.750LOWER
212.833217.667-4.833LOWER
199.500216.417-16.917LOWER
243.667233.33310.333HIGHER
231.500216.25015.250HIGHER
245.417260.583-15.167LOWER
273.417207.16766.250HIGHER
191.333215.417-24.083LOWER
223.250255.750-32.500LOWER
277.083224.00053.083HIGHER
227.083187.75039.333HIGHER
127.667104.75022.917HIGHER
98.91792.5006.417HIGHER
124.667107.16717.500HIGHER
217.583258.500-40.917LOWER
294.833277.25017.583HIGHER
283.667231.75051.917HIGHER
159.917243.917-84.000LOWER
293.917257.00036.917HIGHER
242.083212.91729.167HIGHER
195.417167.83327.583HIGHER
89.083117.417-28.333LOWER
101.000174.500-73.500LOWER
223.250230.583-7.333LOWER
242.000264.250-22.250LOWER
240.333141.16799.167HIGHER
73.41767.5005.917HIGHER
77.333142.083-64.750LOWER
260.917227.58333.333HIGHER
125.167164.333-39.167LOWER
74.250116.667-42.417LOWER
87.167107.417-20.250LOWER
68.08391.917-23.833LOWER
69.833142.000-72.167LOWER
110.66790.83319.833HIGHER
88.667124.833-36.167LOWER
203.417230.083-26.667LOWER
164.250201.917-37.667LOWER
253.417226.75026.667HIGHER
212.167229.917-17.750LOWER
160.08390.83369.250HIGHER
63.167151.167-88.000LOWER
76.083130.083-54.000LOWER
232.250237.083-4.833LOWER
177.750146.91730.833HIGHER
143.833224.667-80.833LOWER
244.083206.75037.333HIGHER
140.833186.500-45.667LOWER
189.583167.50022.083HIGHER
132.500183.417-50.917LOWER
147.667229.500-81.833LOWER
97.667115.417-17.750LOWER
138.750189.333-50.583LOWER
118.917141.833-22.917LOWER
183.250168.41714.833HIGHER
94.500113.833-19.333LOWER
109.167165.917-56.750LOWER
75.083113.250-38.167LOWER
74.833123.333-48.500LOWER
87.083222.083-135.000LOWER
133.583176.167-42.583LOWER
184.583150.25034.333HIGHER
106.167129.333-23.167LOWER
74.417125.667-51.250LOWER
74.250112.750-38.500LOWER
73.083131.583-58.500LOWER
77.667120.250-42.583LOWER
68.417113.750-45.333LOWER
179.083201.000-21.917LOWER
164.833173.333-8.500LOWER
179.583237.667-58.083LOWER
99.583189.667-90.083LOWER
140.917202.583-61.667LOWER
101.917167.917-66.000LOWER
96.667199.250-102.583LOWER
171.167218.000-46.833LOWER
168.083212.417-44.333LOWER
254.500197.66756.833HIGHER
179.167241.000-61.833LOWER
185.917162.75023.167HIGHER
86.083160.750-74.667LOWER
89.417164.500-75.083LOWER
154.083151.7502.333HIGHER
76.250207.583-131.333LOWER
233.167289.750-56.583LOWER
299.583284.75014.833HIGHER
295.750282.08313.667HIGHER
280.417292.833-12.417LOWER
269.667247.25022.417HIGHER
142.000211.083-69.083LOWER
142.500191.250-48.750LOWER
172.583241.167-68.583LOWER
212.333237.083-24.750LOWER
199.917239.917-40.000LOWER
220.917249.167-28.250LOWER
248.167258.083-9.917LOWER
286.667280.7505.917HIGHER
304.750270.66734.083HIGHER
299.750274.50025.250HIGHER
259.750239.50020.250HIGHER
230.500240.750-10.250LOWER
278.333244.25034.083HIGHER
181.167193.500-12.333LOWER
146.750121.66725.083HIGHER
67.417104.833-37.417LOWER
66.417120.750-54.333LOWER
95.333115.750-20.417LOWER
95.667229.917-134.250LOWER
184.750145.91738.833HIGHER
73.50093.583-20.083LOWER
76.250103.250-27.000LOWER
66.33347.33319.000HIGHER
88.33367.08321.250HIGHER
58.00083.917-25.917LOWER
54.41751.0833.333HIGHER
52.50056.083-3.583LOWER
72.667160.583-87.917LOWER
2023 · 331 complete days

Scroll the table sideways if needed to see every column.

2023: mean estimated intensity in gCO₂/kWh. Difference = overnight minus midday.
Date (UTC)OvernightMiddayDifferenceOvernight was
70.250112.083-41.833LOWER
126.333168.583-42.250LOWER
89.167124.250-35.083LOWER
61.08363.750-2.667LOWER
75.833128.417-52.583LOWER
61.417107.917-46.500LOWER
57.08367.667-10.583LOWER
64.66769.333-4.667LOWER
66.50091.750-25.250LOWER
69.25091.083-21.833LOWER
70.75069.3331.417HIGHER
64.16777.917-13.750LOWER
61.41783.750-22.333LOWER
71.41755.91715.500HIGHER
62.750123.667-60.917LOWER
157.917182.000-24.083LOWER
199.083215.167-16.083LOWER
104.083189.500-85.417LOWER
174.417220.583-46.167LOWER
161.250226.333-65.083LOWER
181.667190.083-8.417LOWER
139.667204.250-64.583LOWER
223.333244.167-20.833LOWER
236.333229.8336.500HIGHER
212.667227.750-15.083LOWER
189.083246.833-57.750LOWER
241.583260.250-18.667LOWER
111.66796.16715.500HIGHER
76.500170.667-94.167LOWER
78.500115.667-37.167LOWER
65.16793.833-28.667LOWER
65.167119.833-54.667LOWER
62.167130.250-68.083LOWER
108.250144.250-36.000LOWER
71.750141.750-70.000LOWER
183.750207.667-23.917LOWER
237.500248.583-11.083LOWER
205.083163.58341.500HIGHER
140.583185.000-44.417LOWER
158.250139.66718.583HIGHER
78.583207.500-128.917LOWER
181.917226.500-44.583LOWER
223.583235.833-12.250LOWER
228.167223.0835.083HIGHER
141.667160.333-18.667LOWER
157.833173.750-15.917LOWER
81.66782.250-0.583LOWER
87.25095.250-8.000LOWER
102.50097.3335.167HIGHER
92.250101.083-8.833LOWER
172.750202.667-29.917LOWER
208.083225.583-17.500LOWER
141.750194.250-52.500LOWER
94.583135.250-40.667LOWER
95.000114.250-19.250LOWER
122.667184.500-61.833LOWER
211.750244.417-32.667LOWER
262.917242.58320.333HIGHER
219.833229.750-9.917LOWER
237.333239.083-1.750LOWER
255.417244.00011.417HIGHER
227.583234.500-6.917LOWER
225.500240.000-14.500LOWER
188.167132.75055.417HIGHER
187.917162.41725.500HIGHER
220.250152.66767.583HIGHER
152.33389.83362.500HIGHER
71.75039.58332.167HIGHER
81.500106.417-24.917LOWER
100.50082.16718.333HIGHER
81.500100.167-18.667LOWER
242.583216.16726.417HIGHER
208.583150.66757.917HIGHER
175.500183.583-8.083LOWER
259.167212.91746.250HIGHER
185.41799.66785.750HIGHER
105.50069.58335.917HIGHER
126.83384.00042.833HIGHER
159.583146.50013.083HIGHER
161.500148.91712.583HIGHER
106.583141.750-35.167LOWER
104.000152.917-48.917LOWER
181.500177.5833.917HIGHER
271.250219.41751.833HIGHER
242.750152.08390.667HIGHER
161.417190.917-29.500LOWER
236.750184.25052.500HIGHER
146.083137.5008.583HIGHER
122.417140.000-17.583LOWER
223.000207.00016.000HIGHER
224.833118.833106.000HIGHER
89.50079.6679.833HIGHER
124.667158.250-33.583LOWER
229.167169.50059.667HIGHER
146.000122.75023.250HIGHER
121.667137.083-15.417LOWER
166.250200.167-33.917LOWER
196.667169.75026.917HIGHER
247.750208.25039.500HIGHER
188.333125.66762.667HIGHER
124.750121.6673.083HIGHER
167.167123.50043.667HIGHER
142.25092.16750.083HIGHER
130.750121.7509.000HIGHER
209.417174.00035.417HIGHER
189.667162.00027.667HIGHER
205.250172.00033.250HIGHER
123.00069.83353.167HIGHER
100.83396.7504.083HIGHER
125.167104.00021.167HIGHER
114.250122.917-8.667LOWER
158.167128.41729.750HIGHER
166.583135.33331.250HIGHER
149.250113.41735.833HIGHER
94.08378.25015.833HIGHER
112.50062.16750.333HIGHER
90.08355.25034.833HIGHER
98.500113.417-14.917LOWER
146.917125.33321.583HIGHER
140.083106.91733.167HIGHER
137.750106.66731.083HIGHER
138.50094.83343.667HIGHER
140.000107.33332.667HIGHER
180.250160.25020.000HIGHER
189.000183.3335.667HIGHER
206.083128.25077.833HIGHER
172.250120.25052.000HIGHER
116.00094.33321.667HIGHER
89.25066.00023.250HIGHER
138.333157.917-19.583LOWER
226.417192.66733.750HIGHER
221.000147.08373.917HIGHER
180.833145.66735.167HIGHER
228.750172.75056.000HIGHER
257.333185.91771.417HIGHER
243.333158.66784.667HIGHER
186.167145.50040.667HIGHER
175.583161.58314.000HIGHER
233.833176.66757.167HIGHER
235.167180.83354.333HIGHER
271.417198.08373.333HIGHER
225.750138.00087.750HIGHER
116.917109.5007.417HIGHER
111.33383.58327.750HIGHER
99.333103.083-3.750LOWER
188.083148.33339.750HIGHER
206.167191.66714.500HIGHER
211.917157.50054.417HIGHER
163.58399.41764.167HIGHER
81.41761.16720.250HIGHER
90.58366.91723.667HIGHER
76.08371.1674.917HIGHER
75.833152.083-76.250LOWER
111.583106.4175.167HIGHER
171.167126.16745.000HIGHER
131.75082.58349.167HIGHER
86.083125.500-39.417LOWER
166.250137.25029.000HIGHER
200.167169.16731.000HIGHER
147.917145.2502.667HIGHER
153.917133.00020.917HIGHER
186.667164.25022.417HIGHER
224.167114.333109.833HIGHER
71.66748.41723.250HIGHER
81.75065.08316.667HIGHER
99.333107.583-8.250LOWER
233.917202.08331.833HIGHER
232.500180.83351.667HIGHER
233.000188.08344.917HIGHER
227.000189.33337.667HIGHER
144.500101.08343.417HIGHER
81.58379.9171.667HIGHER
137.667167.250-29.583LOWER
211.833186.41725.417HIGHER
216.417178.25038.167HIGHER
128.167171.000-42.833LOWER
230.333173.75056.583HIGHER
117.00072.83344.167HIGHER
96.66793.0003.667HIGHER
106.250110.000-3.750LOWER
98.167164.167-66.000LOWER
107.583106.7500.833HIGHER
97.833118.833-21.000LOWER
139.833187.583-47.750LOWER
205.833149.75056.083HIGHER
100.25085.25015.000HIGHER
136.917138.167-1.250LOWER
122.917148.333-25.417LOWER
150.250186.083-35.833LOWER
229.750173.25056.500HIGHER
116.00085.25030.750HIGHER
120.25070.58349.667HIGHER
96.91789.0837.833HIGHER
174.000146.83327.167HIGHER
174.500181.750-7.250LOWER
267.750203.66764.083HIGHER
181.583139.66741.917HIGHER
120.333140.917-20.583LOWER
100.16763.41736.750HIGHER
111.917108.5833.333HIGHER
154.500136.08318.417HIGHER
147.917160.917-13.000LOWER
253.417225.58327.833HIGHER
226.000227.583-1.583LOWER
230.417206.83323.583HIGHER
191.917150.25041.667HIGHER
125.667123.5002.167HIGHER
132.250176.000-43.750LOWER
182.583165.25017.333HIGHER
137.917163.833-25.917LOWER
228.083201.91726.167HIGHER
213.750209.8333.917HIGHER
215.333150.33365.000HIGHER
121.333104.66716.667HIGHER
159.000152.8336.167HIGHER
199.250170.33328.917HIGHER
210.833206.1674.667HIGHER
243.417200.75042.667HIGHER
267.833226.25041.583HIGHER
214.500160.25054.250HIGHER
213.667203.00010.667HIGHER
174.417221.250-46.833LOWER
240.167236.4173.750HIGHER
156.417196.833-40.417LOWER
126.750199.333-72.583LOWER
199.667193.4176.250HIGHER
128.500145.250-16.750LOWER
108.333146.667-38.333LOWER
97.75042.00055.750HIGHER
60.16761.833-1.667LOWER
63.08369.500-6.417LOWER
100.083167.583-67.500LOWER
140.000118.91721.083HIGHER
112.667155.333-42.667LOWER
65.00050.25014.750HIGHER
77.750115.417-37.667LOWER
148.417120.00028.417HIGHER
203.917107.16796.750HIGHER
62.333125.750-63.417LOWER
97.75088.9178.833HIGHER
157.500177.417-19.917LOWER
74.917121.750-46.833LOWER
189.833222.500-32.667LOWER
82.41748.66733.750HIGHER
78.41776.6671.750HIGHER
115.500125.417-9.917LOWER
62.33382.583-20.250LOWER
63.91787.583-23.667LOWER
102.333144.500-42.167LOWER
149.167228.833-79.667LOWER
161.66796.00065.667HIGHER
63.500146.750-83.250LOWER
202.250247.000-44.750LOWER
110.50086.16724.333HIGHER
59.50068.333-8.833LOWER
74.250126.417-52.167LOWER
217.500241.083-23.583LOWER
185.833111.41774.417HIGHER
65.66768.833-3.167LOWER
71.083144.500-73.417LOWER
71.58392.917-21.333LOWER
240.333222.66717.667HIGHER
141.250224.250-83.000LOWER
203.917224.417-20.500LOWER
190.750198.333-7.583LOWER
170.167197.750-27.583LOWER
88.833132.417-43.583LOWER
72.833119.333-46.500LOWER
84.333200.250-115.917LOWER
112.167192.250-80.083LOWER
86.91764.25022.667HIGHER
60.500111.583-51.083LOWER
61.75099.583-37.833LOWER
145.750162.000-16.250LOWER
162.000149.41712.583HIGHER
104.083145.250-41.167LOWER
87.667168.833-81.167LOWER
82.250135.583-53.333LOWER
104.167181.083-76.917LOWER
134.917188.083-53.167LOWER
101.583218.250-116.667LOWER
185.833198.583-12.750LOWER
86.83397.167-10.333LOWER
77.833189.917-112.083LOWER
73.583184.167-110.583LOWER
278.417287.500-9.083LOWER
265.167274.083-8.917LOWER
72.91790.667-17.750LOWER
64.583127.833-63.250LOWER
88.083228.583-140.500LOWER
142.083236.167-94.083LOWER
165.583163.5832.000HIGHER
62.00084.917-22.917LOWER
61.000113.750-52.750LOWER
107.083183.167-76.083LOWER
210.167249.750-39.583LOWER
195.333206.083-10.750LOWER
150.917232.750-81.833LOWER
194.333257.167-62.833LOWER
264.750258.7506.000HIGHER
283.750273.8339.917HIGHER
301.333270.16731.167HIGHER
195.083227.333-32.250LOWER
132.333211.583-79.250LOWER
129.167234.583-105.417LOWER
264.417243.16721.250HIGHER
129.583174.167-44.583LOWER
116.167192.083-75.917LOWER
45.25078.167-32.917LOWER
69.000117.250-48.250LOWER
77.750224.000-146.250LOWER
130.750232.750-102.000LOWER
144.917214.583-69.667LOWER
157.833222.417-64.583LOWER
135.167180.500-45.333LOWER
65.25073.167-7.917LOWER
55.66761.083-5.417LOWER
69.750128.917-59.167LOWER
88.333140.417-52.083LOWER
54.66746.8337.833HIGHER
44.25058.167-13.917LOWER
38.25062.917-24.667LOWER
47.83339.5838.250HIGHER
51.75036.08315.667HIGHER
64.41745.50018.917HIGHER
58.250136.250-78.000LOWER
61.41734.58326.833HIGHER
49.16730.83318.333HIGHER
48.75053.417-4.667LOWER
68.50042.33326.167HIGHER
61.25085.667-24.417LOWER
2024 · 365 complete days

Scroll the table sideways if needed to see every column.

2024: mean estimated intensity in gCO₂/kWh. Difference = overnight minus midday.
Date (UTC)OvernightMiddayDifferenceOvernight was
62.583104.333-41.750LOWER
58.583146.833-88.250LOWER
73.583167.917-94.333LOWER
98.417228.417-130.000LOWER
136.250185.667-49.417LOWER
121.500201.000-79.500LOWER
148.417220.083-71.667LOWER
181.333239.250-57.917LOWER
174.750216.583-41.833LOWER
229.583250.167-20.583LOWER
252.167256.417-4.250LOWER
273.917278.333-4.417LOWER
200.917229.250-28.333LOWER
192.417178.08314.333HIGHER
99.583211.500-111.917LOWER
270.583248.66721.917HIGHER
242.500261.833-19.333LOWER
226.000232.083-6.083LOWER
186.750198.417-11.667LOWER
100.833129.000-28.167LOWER
68.25081.250-13.000LOWER
103.16784.58318.583HIGHER
69.917115.083-45.167LOWER
68.917107.833-38.917LOWER
134.167151.583-17.417LOWER
59.08372.417-13.333LOWER
92.83391.0001.833HIGHER
80.00066.00014.000HIGHER
132.167227.917-95.750LOWER
101.667194.000-92.333LOWER
150.833129.25021.583HIGHER
68.333151.417-83.083LOWER
71.33351.50019.833HIGHER
64.33358.5835.750HIGHER
66.58342.83323.750HIGHER
61.25066.750-5.500LOWER
49.58397.250-47.667LOWER
167.750250.083-82.333LOWER
215.167170.83344.333HIGHER
64.083126.417-62.333LOWER
101.000209.083-108.083LOWER
195.583176.25019.333HIGHER
136.750146.083-9.333LOWER
87.250174.000-86.750LOWER
135.333173.667-38.333LOWER
87.500155.333-67.833LOWER
124.000177.250-53.250LOWER
162.000119.16742.833HIGHER
87.333100.000-12.667LOWER
72.167106.583-34.417LOWER
107.25079.33327.917HIGHER
84.08377.3336.750HIGHER
63.833136.167-72.333LOWER
76.833148.750-71.917LOWER
195.750199.167-3.417LOWER
203.833188.08315.750HIGHER
80.417165.833-85.417LOWER
142.250166.917-24.667LOWER
187.750142.08345.667HIGHER
70.167157.333-87.167LOWER
138.833126.25012.583HIGHER
137.500134.6672.833HIGHER
149.583192.250-42.667LOWER
217.667168.75048.917HIGHER
148.000208.333-60.333LOWER
219.250218.3330.917HIGHER
179.667133.91745.750HIGHER
76.50062.33314.167HIGHER
71.25055.75015.500HIGHER
81.333107.917-26.583LOWER
130.500244.500-114.000LOWER
204.917187.83317.083HIGHER
82.583101.583-19.000LOWER
81.500112.333-30.833LOWER
59.75062.500-2.750LOWER
139.583131.0008.583HIGHER
67.083101.417-34.333LOWER
97.833128.333-30.500LOWER
81.917170.167-88.250LOWER
225.333227.417-2.083LOWER
138.25082.25056.000HIGHER
53.50055.417-1.917LOWER
44.08332.41711.667HIGHER
44.75085.917-41.167LOWER
136.667154.333-17.667LOWER
102.250179.917-77.667LOWER
60.75076.917-16.167LOWER
52.16765.000-12.833LOWER
78.33379.583-1.250LOWER
97.667117.917-20.250LOWER
133.50087.91745.583HIGHER
83.91785.417-1.500LOWER
95.500162.750-67.250LOWER
74.66764.16710.500HIGHER
78.000142.000-64.000LOWER
49.33324.33325.000HIGHER
45.41730.66714.750HIGHER
50.66742.0008.667HIGHER
80.917129.833-48.917LOWER
61.16734.58326.583HIGHER
81.75041.25040.500HIGHER
54.58372.917-18.333LOWER
53.08330.83322.250HIGHER
61.50033.50028.000HIGHER
75.16752.25022.917HIGHER
59.58324.33335.250HIGHER
48.66746.5002.167HIGHER
76.083107.417-31.333LOWER
150.75056.41794.333HIGHER
48.00043.6674.333HIGHER
74.83371.0003.833HIGHER
83.833101.583-17.750LOWER
179.750195.083-15.333LOWER
163.333117.41745.917HIGHER
100.500129.333-28.833LOWER
161.917175.250-13.333LOWER
177.750199.000-21.250LOWER
167.417156.50010.917HIGHER
96.33383.16713.167HIGHER
85.50057.33328.167HIGHER
61.58360.1671.417HIGHER
124.833135.500-10.667LOWER
65.25063.4171.833HIGHER
88.333121.667-33.333LOWER
112.417119.917-7.500LOWER
161.333156.5004.833HIGHER
167.167148.25018.917HIGHER
171.583150.91720.667HIGHER
175.667114.50061.167HIGHER
117.083123.167-6.083LOWER
176.417115.50060.917HIGHER
123.75057.16766.583HIGHER
73.75056.58317.167HIGHER
103.667103.5830.083HIGHER
76.333143.667-67.333LOWER
144.583160.333-15.750LOWER
182.917170.41712.500HIGHER
156.750160.500-3.750LOWER
158.417118.41740.000HIGHER
121.08378.16742.917HIGHER
142.500129.83312.667HIGHER
157.167182.250-25.083LOWER
145.66781.91763.750HIGHER
51.00074.750-23.750LOWER
169.583176.250-6.667LOWER
136.83368.91767.917HIGHER
94.00065.50028.500HIGHER
76.91771.9175.000HIGHER
121.25082.75038.500HIGHER
79.833104.167-24.333LOWER
58.83343.75015.083HIGHER
54.75049.2505.500HIGHER
63.50050.91712.583HIGHER
81.58355.66725.917HIGHER
99.083130.583-31.500LOWER
90.66738.16752.500HIGHER
53.58344.5009.083HIGHER
80.25069.75010.500HIGHER
79.25037.58341.667HIGHER
67.75048.58319.167HIGHER
59.33371.083-11.750LOWER
71.00040.91730.083HIGHER
69.583113.000-43.417LOWER
157.16790.00067.167HIGHER
61.91777.917-16.000LOWER
121.500107.00014.500HIGHER
81.00062.33318.667HIGHER
100.750127.500-26.750LOWER
151.667137.91713.750HIGHER
111.583103.7507.833HIGHER
124.667126.000-1.333LOWER
112.58353.50059.083HIGHER
86.91760.41726.500HIGHER
79.083106.417-27.333LOWER
119.333129.583-10.250LOWER
154.833144.33310.500HIGHER
168.917119.50049.417HIGHER
94.00045.66748.333HIGHER
60.91756.3334.583HIGHER
96.58367.08329.500HIGHER
91.33386.8334.500HIGHER
103.41775.58327.833HIGHER
66.417113.667-47.250LOWER
90.75069.58321.167HIGHER
61.25033.75027.500HIGHER
54.58390.250-35.667LOWER
71.25037.08334.167HIGHER
67.91767.0830.833HIGHER
146.417177.333-30.917LOWER
63.83393.250-29.417LOWER
62.08366.083-4.000LOWER
124.917144.167-19.250LOWER
114.333113.7500.583HIGHER
69.91785.833-15.917LOWER
66.25080.000-13.750LOWER
136.083183.250-47.167LOWER
95.417121.500-26.083LOWER
148.417144.3334.083HIGHER
109.25096.25013.000HIGHER
111.66771.50040.167HIGHER
100.917148.083-47.167LOWER
88.16798.000-9.833LOWER
111.917105.0006.917HIGHER
149.750136.50013.250HIGHER
191.333119.08372.250HIGHER
82.833117.583-34.750LOWER
92.667104.000-11.333LOWER
159.000132.25026.750HIGHER
119.91786.41733.500HIGHER
87.58381.0836.500HIGHER
132.750106.25026.500HIGHER
157.833129.08328.750HIGHER
154.250154.0000.250HIGHER
139.00061.41777.583HIGHER
101.58362.00039.583HIGHER
100.00038.41761.583HIGHER
61.58366.000-4.417LOWER
75.16773.5001.667HIGHER
57.75048.8338.917HIGHER
77.58368.1679.417HIGHER
48.50045.5832.917HIGHER
62.00045.75016.250HIGHER
99.91756.08343.833HIGHER
52.16768.583-16.417LOWER
79.83377.7502.083HIGHER
105.833132.667-26.833LOWER
75.00042.66732.333HIGHER
81.50071.16710.333HIGHER
79.83367.16712.667HIGHER
66.66752.00014.667HIGHER
93.33356.08337.250HIGHER
48.75041.8336.917HIGHER
56.83354.2502.583HIGHER
61.16750.50010.667HIGHER
55.83339.08316.750HIGHER
56.16743.58312.583HIGHER
53.83341.66712.167HIGHER
61.41767.917-6.500LOWER
93.08378.25014.833HIGHER
97.500120.333-22.833LOWER
125.417112.41713.000HIGHER
157.833134.25023.583HIGHER
79.91757.00022.917HIGHER
67.66774.000-6.333LOWER
154.417170.667-16.250LOWER
170.000177.000-7.000LOWER
202.250200.7501.500HIGHER
76.83368.6678.167HIGHER
79.417116.583-37.167LOWER
127.417166.583-39.167LOWER
95.41794.0831.333HIGHER
73.66781.083-7.417LOWER
72.00071.1670.833HIGHER
49.16762.833-13.667LOWER
88.083112.083-24.000LOWER
117.417133.083-15.667LOWER
81.16756.00025.167HIGHER
67.917106.583-38.667LOWER
142.917143.417-0.500LOWER
127.417125.0832.333HIGHER
119.167114.9174.250HIGHER
139.750143.000-3.250LOWER
118.167111.2506.917HIGHER
93.083127.500-34.417LOWER
104.500181.583-77.083LOWER
155.167199.083-43.917LOWER
131.083153.333-22.250LOWER
138.500210.000-71.500LOWER
95.500100.000-4.500LOWER
53.25057.917-4.667LOWER
73.083156.167-83.083LOWER
107.08380.83326.250HIGHER
61.333123.083-61.750LOWER
68.583105.833-37.250LOWER
77.417137.833-60.417LOWER
142.250171.833-29.583LOWER
123.333124.167-0.833LOWER
67.58357.16710.417HIGHER
50.167105.500-55.333LOWER
83.333161.917-78.583LOWER
114.417147.583-33.167LOWER
94.167132.583-38.417LOWER
67.917146.417-78.500LOWER
124.250161.500-37.250LOWER
92.08364.08328.000HIGHER
62.750224.667-161.917LOWER
188.000242.250-54.250LOWER
123.583141.250-17.667LOWER
71.250171.417-100.167LOWER
134.750162.250-27.500LOWER
166.583145.66720.917HIGHER
82.917138.500-55.583LOWER
87.33369.00018.333HIGHER
73.583140.167-66.583LOWER
102.000170.750-68.750LOWER
172.500175.917-3.417LOWER
103.750125.417-21.667LOWER
174.417217.583-43.167LOWER
158.667143.83314.833HIGHER
85.417121.000-35.583LOWER
67.000195.833-128.833LOWER
165.833222.167-56.333LOWER
198.000241.250-43.250LOWER
110.250160.583-50.333LOWER
116.333221.000-104.667LOWER
170.000204.083-34.083LOWER
173.250245.833-72.583LOWER
211.417254.000-42.583LOWER
247.417260.000-12.583LOWER
228.500247.167-18.667LOWER
176.583207.667-31.083LOWER
175.833233.167-57.333LOWER
194.250243.000-48.750LOWER
171.167190.750-19.583LOWER
91.333175.000-83.667LOWER
119.583201.167-81.583LOWER
187.083218.500-31.417LOWER
144.333219.167-74.833LOWER
178.833190.250-11.417LOWER
78.250118.667-40.417LOWER
60.583129.917-69.333LOWER
111.500236.500-125.000LOWER
92.167181.000-88.833LOWER
77.667150.667-73.000LOWER
121.833189.250-67.417LOWER
70.167185.917-115.750LOWER
104.833102.4172.417HIGHER
56.66778.250-21.583LOWER
67.333101.833-34.500LOWER
87.917228.917-141.000LOWER
208.250204.5833.667HIGHER
216.250217.417-1.167LOWER
108.833136.417-27.583LOWER
78.167134.833-56.667LOWER
75.667118.667-43.000LOWER
85.667160.083-74.417LOWER
176.833227.333-50.500LOWER
211.917218.333-6.417LOWER
68.917122.083-53.167LOWER
62.500182.000-119.500LOWER
58.91794.167-35.250LOWER
57.16777.833-20.667LOWER
55.750172.250-116.500LOWER
120.000215.833-95.833LOWER
252.583264.167-11.583LOWER
288.500272.25016.250HIGHER
281.750275.0836.667HIGHER
163.167144.58318.583HIGHER
53.66763.833-10.167LOWER
51.66795.667-44.000LOWER
65.500146.833-81.333LOWER
57.41788.667-31.250LOWER
47.91771.583-23.667LOWER
50.66779.000-28.333LOWER
64.25054.5839.667HIGHER
50.16749.1671.000HIGHER
35.333146.500-111.167LOWER
70.917100.417-29.500LOWER
87.750109.500-21.750LOWER
81.750202.333-120.583LOWER
173.083224.000-50.917LOWER
165.833179.750-13.917LOWER
103.58391.41712.167HIGHER
59.50069.500-10.000LOWER
60.75060.0000.750HIGHER
2025 · 363 complete days

Scroll the table sideways if needed to see every column.

2025: mean estimated intensity in gCO₂/kWh. Difference = overnight minus midday.
Date (UTC)OvernightMiddayDifferenceOvernight was
47.41759.083-11.667LOWER
65.083140.500-75.417LOWER
53.000156.167-103.167LOWER
179.667215.583-35.917LOWER
58.833154.167-95.333LOWER
47.583121.333-73.750LOWER
69.917137.000-67.083LOWER
102.250241.583-139.333LOWER
184.333180.0834.250HIGHER
184.667238.083-53.417LOWER
207.917225.500-17.583LOWER
206.417195.25011.167HIGHER
117.917212.583-94.667LOWER
200.083224.583-24.500LOWER
203.917221.250-17.333LOWER
161.667224.750-63.083LOWER
207.500228.250-20.750LOWER
233.833258.417-24.583LOWER
262.000264.333-2.333LOWER
252.667248.3334.333HIGHER
273.250261.08312.167HIGHER
200.833142.25058.583HIGHER
48.667105.833-57.167LOWER
47.333114.917-67.583LOWER
66.83388.167-21.333LOWER
47.000105.583-58.583LOWER
53.333152.167-98.833LOWER
62.167158.417-96.250LOWER
87.583190.750-103.167LOWER
174.500251.667-77.167LOWER
167.333167.0830.250HIGHER
99.417170.500-71.083LOWER
151.167168.417-17.250LOWER
86.167122.500-36.333LOWER
101.167206.250-105.083LOWER
218.250200.83317.417HIGHER
83.417120.583-37.167LOWER
75.750234.167-158.417LOWER
152.833147.5835.250HIGHER
73.833150.750-76.917LOWER
104.917196.250-91.333LOWER
143.583217.167-73.583LOWER
184.417232.167-47.750LOWER
173.417199.417-26.000LOWER
195.083213.000-17.917LOWER
114.500131.250-16.750LOWER
156.917186.000-29.083LOWER
151.917123.16728.750HIGHER
75.583145.583-70.000LOWER
81.58367.08314.500HIGHER
76.00058.25017.750HIGHER
66.08374.833-8.750LOWER
89.66760.33329.333HIGHER
64.08365.083-1.000LOWER
86.000140.083-54.083LOWER
147.583167.333-19.750LOWER
161.250144.58316.667HIGHER
208.583178.33330.250HIGHER
157.417133.50023.917HIGHER
141.25093.83347.417HIGHER
124.833140.667-15.833LOWER
159.00080.75078.250HIGHER
96.00072.91723.083HIGHER
97.16780.25016.917HIGHER
76.750194.000-117.250LOWER
108.16792.08316.083HIGHER
141.167149.750-8.583LOWER
183.667139.66744.000HIGHER
97.333153.667-56.333LOWER
133.583167.750-34.167LOWER
159.833214.000-54.167LOWER
228.833219.9178.917HIGHER
177.000151.58325.417HIGHER
170.000169.9170.083HIGHER
164.083186.083-22.000LOWER
135.083101.16733.917HIGHER
200.583196.5834.000HIGHER
231.750156.41775.333HIGHER
59.00065.500-6.500LOWER
77.583126.250-48.667LOWER
103.500186.667-83.167LOWER
178.667156.58322.083HIGHER
129.750164.917-35.167LOWER
207.417126.00081.417HIGHER
117.00068.25048.750HIGHER
62.33364.167-1.833LOWER
89.66755.41734.250HIGHER
57.58358.167-0.583LOWER
176.917166.16710.750HIGHER
155.16757.41797.750HIGHER
73.58348.33325.250HIGHER
79.83365.33314.500HIGHER
100.83347.25053.583HIGHER
64.41753.08311.333HIGHER
80.08380.0000.083HIGHER
189.000142.33346.667HIGHER
230.250166.25064.000HIGHER
200.917143.08357.833HIGHER
183.667108.00075.667HIGHER
136.750113.91722.833HIGHER
137.41766.33371.083HIGHER
78.16780.083-1.917LOWER
99.58392.1677.417HIGHER
132.417193.833-61.417LOWER
58.66758.750-0.083LOWER
102.917148.333-45.417LOWER
137.08371.08366.000HIGHER
54.50065.750-11.250LOWER
122.250126.750-4.500LOWER
150.917166.083-15.167LOWER
199.917152.41747.500HIGHER
176.833198.167-21.333LOWER
179.583157.58322.000HIGHER
168.500141.16727.333HIGHER
145.833114.08331.750HIGHER
87.00069.50017.500HIGHER
127.917132.000-4.083LOWER
209.833136.50073.333HIGHER
206.000138.00068.000HIGHER
189.583115.83373.750HIGHER
137.00099.08337.917HIGHER
98.41754.75043.667HIGHER
74.08360.41713.667HIGHER
72.08394.083-22.000LOWER
154.750130.66724.083HIGHER
205.167152.41752.750HIGHER
192.333168.83323.500HIGHER
197.00095.417101.583HIGHER
123.00064.50058.500HIGHER
75.08376.417-1.333LOWER
110.75089.25021.500HIGHER
122.00084.33337.667HIGHER
118.33353.91764.417HIGHER
74.50096.250-21.750LOWER
111.25038.83372.417HIGHER
95.91750.08345.833HIGHER
85.16770.25014.917HIGHER
150.167104.16746.000HIGHER
173.667126.33347.333HIGHER
149.25082.25067.000HIGHER
82.833101.083-18.250LOWER
126.083111.50014.583HIGHER
59.16749.4179.750HIGHER
51.91737.83314.083HIGHER
57.66746.33311.333HIGHER
45.917120.167-74.250LOWER
88.25091.583-3.333LOWER
59.25030.00029.250HIGHER
51.25088.667-37.417LOWER
104.00062.66741.333HIGHER
69.50044.75024.750HIGHER
68.58370.333-1.750LOWER
55.66742.33313.333HIGHER
80.41765.83314.583HIGHER
75.75091.417-15.667LOWER
83.50087.167-3.667LOWER
140.250114.91725.333HIGHER
64.25083.333-19.083LOWER
101.833115.250-13.417LOWER
58.000100.333-42.333LOWER
185.75082.083103.667HIGHER
69.91776.750-6.833LOWER
129.417110.00019.417HIGHER
110.91746.66764.250HIGHER
85.25073.08312.167HIGHER
95.83375.16720.667HIGHER
89.83374.33315.500HIGHER
134.750104.58330.167HIGHER
189.917107.00082.917HIGHER
112.00096.75015.250HIGHER
77.00093.750-16.750LOWER
59.16742.66716.500HIGHER
60.25050.5009.750HIGHER
57.16746.75010.417HIGHER
148.167148.250-0.083LOWER
110.08341.08369.000HIGHER
88.50046.08342.417HIGHER
61.66745.75015.917HIGHER
87.16793.333-6.167LOWER
142.583100.75041.833HIGHER
187.667160.33327.333HIGHER
214.333115.33399.000HIGHER
107.58379.25028.333HIGHER
107.58347.91759.667HIGHER
70.08353.75016.333HIGHER
97.333103.500-6.167LOWER
72.66747.75024.917HIGHER
64.25080.333-16.083LOWER
150.250116.41733.833HIGHER
178.083112.58365.500HIGHER
188.833114.83374.000HIGHER
157.25075.91781.333HIGHER
104.75093.83310.917HIGHER
125.16751.83373.333HIGHER
80.33363.25017.083HIGHER
88.083148.250-60.167LOWER
192.583139.66752.917HIGHER
161.417124.16737.250HIGHER
160.333108.83351.500HIGHER
108.500105.0003.500HIGHER
146.250146.917-0.667LOWER
140.833142.583-1.750LOWER
142.833142.7500.083HIGHER
121.000128.583-7.583LOWER
162.41799.50062.917HIGHER
126.83390.41736.417HIGHER
110.000109.1670.833HIGHER
102.417117.250-14.833LOWER
160.750171.417-10.667LOWER
155.750131.75024.000HIGHER
117.58397.83319.750HIGHER
79.25068.75010.500HIGHER
70.08375.750-5.667LOWER
83.16769.16714.000HIGHER
102.75050.58352.167HIGHER
66.25063.5002.750HIGHER
80.83376.9173.917HIGHER
87.25071.91715.333HIGHER
94.25062.75031.500HIGHER
95.66755.33340.333HIGHER
115.08379.33335.750HIGHER
175.250145.33329.917HIGHER
218.417158.66759.750HIGHER
165.917148.08317.833HIGHER
163.167110.41752.750HIGHER
133.833121.25012.583HIGHER
123.75094.66729.083HIGHER
177.250184.167-6.917LOWER
164.000130.91733.083HIGHER
105.167153.583-48.417LOWER
158.083139.16718.917HIGHER
182.667147.83334.833HIGHER
181.417158.25023.167HIGHER
172.750130.50042.250HIGHER
156.25062.41793.833HIGHER
81.91798.000-16.083LOWER
148.25082.08366.167HIGHER
145.00097.08347.917HIGHER
96.333114.417-18.083LOWER
127.66750.25077.417HIGHER
65.58343.08322.500HIGHER
70.75050.33320.417HIGHER
105.250153.000-47.750LOWER
117.66795.58322.083HIGHER
96.833118.750-21.917LOWER
118.417126.583-8.167LOWER
112.91757.75055.167HIGHER
66.08361.5834.500HIGHER
105.500112.000-6.500LOWER
171.083129.66741.417HIGHER
64.33356.1678.167HIGHER
56.16750.1676.000HIGHER
56.83351.7505.083HIGHER
64.41764.917-0.500LOWER
109.50079.50030.000HIGHER
61.83347.66714.167HIGHER
59.41766.833-7.417LOWER
88.50056.50032.000HIGHER
85.16785.583-0.417LOWER
68.417118.000-49.583LOWER
124.667115.8338.833HIGHER
80.33364.91715.417HIGHER
94.500107.417-12.917LOWER
179.750169.00010.750HIGHER
171.667145.33326.333HIGHER
136.08396.00040.083HIGHER
115.500147.500-32.000LOWER
110.333111.333-1.000LOWER
156.333189.083-32.750LOWER
234.667201.75032.917HIGHER
186.917170.33316.583HIGHER
141.417152.500-11.083LOWER
111.91792.33319.583HIGHER
75.08380.167-5.083LOWER
68.66754.41714.250HIGHER
55.25056.667-1.417LOWER
83.750124.417-40.667LOWER
134.250179.000-44.750LOWER
200.250190.6679.583HIGHER
139.833152.083-12.250LOWER
157.833195.250-37.417LOWER
191.417203.833-12.417LOWER
225.417238.167-12.750LOWER
250.250266.417-16.167LOWER
258.917251.7507.167HIGHER
239.667241.083-1.417LOWER
214.667234.500-19.833LOWER
232.500243.000-10.500LOWER
177.500142.25035.250HIGHER
58.25071.000-12.750LOWER
87.333164.083-76.750LOWER
106.75095.08311.667HIGHER
88.333205.917-117.583LOWER
84.83357.83327.000HIGHER
57.66764.000-6.333LOWER
53.50053.5000.000EQUAL
60.66754.8335.833HIGHER
40.000105.083-65.083LOWER
44.91763.083-18.167LOWER
57.667161.833-104.167LOWER
100.667139.917-39.250LOWER
65.58370.333-4.750LOWER
45.00066.000-21.000LOWER
70.00089.250-19.250LOWER
61.08363.583-2.500LOWER
60.00094.583-34.583LOWER
66.000130.083-64.083LOWER
134.917237.167-102.250LOWER
192.500205.750-13.250LOWER
172.250195.000-22.750LOWER
137.417165.583-28.167LOWER
85.250158.833-73.583LOWER
90.000102.000-12.000LOWER
45.333150.917-105.583LOWER
55.583152.500-96.917LOWER
55.91799.833-43.917LOWER
50.583133.417-82.833LOWER
117.833180.750-62.917LOWER
62.250163.667-101.417LOWER
161.583197.500-35.917LOWER
83.417148.250-64.833LOWER
101.250184.583-83.333LOWER
229.333210.75018.583HIGHER
96.083159.750-63.667LOWER
67.83376.333-8.500LOWER
73.917177.500-103.583LOWER
103.333209.667-106.333LOWER
197.333188.2509.083HIGHER
72.50088.417-15.917LOWER
83.00078.6674.333HIGHER
61.16789.917-28.750LOWER
56.333127.417-71.083LOWER
64.333139.333-75.000LOWER
56.667162.750-106.083LOWER
159.667194.000-34.333LOWER
78.833172.417-93.583LOWER
166.583135.33331.250HIGHER
55.33399.500-44.167LOWER
83.083113.833-30.750LOWER
53.16790.417-37.250LOWER
45.25090.500-45.250LOWER
49.91779.083-29.167LOWER
74.333115.833-41.500LOWER
128.167186.417-58.250LOWER
101.500102.750-1.250LOWER
64.00063.7500.250HIGHER
56.917175.417-118.500LOWER
152.333210.667-58.333LOWER
170.000138.33331.667HIGHER
55.500119.000-63.500LOWER
86.417108.167-21.750LOWER
105.917146.000-40.083LOWER
97.917157.333-59.417LOWER
58.750172.250-113.500LOWER
93.667141.500-47.833LOWER
58.500121.167-62.667LOWER
60.41780.667-20.250LOWER
62.167130.667-68.500LOWER
95.917103.750-7.833LOWER
114.750207.417-92.667LOWER
170.000194.000-24.000LOWER
93.917191.167-97.250LOWER
102.083121.833-19.750LOWER

Download all daily results (CSV)

Coverage, not zeroes

Every excluded date

59 of 2,922 calendar dates were excluded. Missing values are not zero. An excluded date belongs to neither outcome.

Missingness is concentrated in 2023: 34 dates were excluded in that year. Coverage is shown separately in the annual table.

Inspect all excluded dates and affected intervals
23 November 2018 — inspect affected interval starts
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24 November 2018 — inspect affected interval starts
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31 March 2019 — inspect affected interval starts
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19 April 2019 — inspect affected interval starts
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20 April 2019 — inspect affected interval starts
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21 April 2019 — inspect affected interval starts
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16 August 2019 — inspect affected interval starts
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17 August 2019 — inspect affected interval starts
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18 August 2019 — inspect affected interval starts
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19 August 2019 — inspect affected interval starts
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22 December 2019 — inspect affected interval starts
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23 January 2020 — inspect affected interval starts
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1 February 2020 — inspect affected interval starts
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2 February 2020 — inspect affected interval starts
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10 June 2020 — inspect affected interval starts
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29 August 2020 — inspect affected interval starts
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24 January 2021 — inspect affected interval starts
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24 December 2021 — inspect affected interval starts
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25 December 2021 — inspect affected interval starts
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26 December 2021 — inspect affected interval starts
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27 December 2021 — inspect affected interval starts
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10 December 2022 — inspect affected interval starts
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26 January 2023 — inspect affected interval starts
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6 March 2023 — inspect affected interval starts
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7 March 2023 — inspect affected interval starts
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8 March 2023 — inspect affected interval starts
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9 March 2023 — inspect affected interval starts
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10 March 2023 — inspect affected interval starts
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11 March 2023 — inspect affected interval starts
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12 March 2023 — inspect affected interval starts
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13 March 2023 — inspect affected interval starts
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14 March 2023 — inspect affected interval starts
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15 March 2023 — inspect affected interval starts
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16 March 2023 — inspect affected interval starts
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17 March 2023 — inspect affected interval starts
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18 March 2023 — inspect affected interval starts
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19 March 2023 — inspect affected interval starts
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20 March 2023 — inspect affected interval starts
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21 March 2023 — inspect affected interval starts
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22 March 2023 — inspect affected interval starts
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23 March 2023 — inspect affected interval starts
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24 March 2023 — inspect affected interval starts
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25 March 2023 — inspect affected interval starts
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26 March 2023 — inspect affected interval starts
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27 March 2023 — inspect affected interval starts
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28 March 2023 — inspect affected interval starts
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29 March 2023 — inspect affected interval starts
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30 March 2023 — inspect affected interval starts
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31 March 2023 — inspect affected interval starts
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1 April 2023 — inspect affected interval starts
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2 April 2023 — inspect affected interval starts
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3 April 2023 — inspect affected interval starts
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4 April 2023 — inspect affected interval starts
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5 April 2023 — inspect affected interval starts
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21 October 2023 — inspect affected interval starts
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22 October 2023 — inspect affected interval starts
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12 June 2024 — inspect affected interval starts
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13 January 2025 — inspect affected interval starts
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11 August 2025 — inspect affected interval starts
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Download exclusions and interval-level reasons (CSV)

Reproducible method

What was compared

  1. Enumerate every UTC date from 1 January 2018 through 31 December 2025.
  2. Take the 12 half-hour observations starting at 00:00 through 05:30, and the 12 starting at 11:00 through 16:30. The blocks end at 06:00 and 17:00 respectively.
  3. Require every observation in both blocks to have one finite numeric actual value. Missing, duplicate or invalid observations exclude the date. No interpolation or forecast substitution.
  4. Take the arithmetic mean for each block. Subtract midday from overnight: positive means overnight higher, negative means lower.
  5. Compare exact values before rounding. Display values to three decimal places; equal means equal at source precision, not physically identical emissions.

Method 2.0 clarifies an undocumented plausibility guard in the original research. Independent checking found it affected zero observations in this edition. It is an anomaly trigger, not a scientific validity range.

What this evidence cannot tell you

  • These are fixed UTC periods. During British Summer Time they are 01:00–07:00 and 12:00–18:00 in UK local time; they are not tariff windows.
  • The source’s actual field is an estimate of average generation carbon intensity. It is not a direct measurement of marginal household emissions.
  • Historical frequency is not future probability. These dates are not independent trials of a future outcome.
  • This is not a recommendation about current or tonight’s electricity use, and does not calculate personal carbon savings.
  • Carbon intensity is not electricity price. No conclusion about cheaper usage times follows.
  • Incomplete dates are excluded. Missingness, particularly in 2023, limits the comparison. Source estimates may be revised later.

Looking for current or forecast intensity instead? Use the official Carbon Intensity service; this historical resource does not answer that task.

Sources and responsibility

Source observations

NESO National Carbon Intensity Forecast supplies the estimated carbon-intensity observations. Its methodology describes the generation basis; the official API documentation describes UTC half-hour intervals.

Supported by National Energy SO Open Data

Source use is subject to the NESO Open Data Licence. NESO has not commissioned, endorsed or verified CoryVu’s analysis.

CoryVu derived analysis

CoryVu defined this bounded comparison, constructed the complete population and derived the block means, differences, outcomes and exclusions. Separate automated calculation paths reproduced the results. This is not independent expert certification or human computational review.

This evidence edition

Observations through
31 December 2025
Source retrieved
2026-09-23T15:09:43.721408+00:00
Source last-modified header
Wed, 23 Sep 2026 14:11:28 GMT
Evidence edition
pilot1-method2-20260924
Method
2.0
Automated verification run
2026-09-24T09:22:39.830503+00:00

This is a frozen edition. Annual review may produce an explicitly revised edition; failed checks never silently replace verified results.

Download the data dictionary, method and edition hashes (text)

Found a problem with this evidence? Contact CoryVu with the date or claim you want us to check.