2025 data for all ten provinces

When each province needs power most.

2025 electricity demand, hour by hour, worked into the hours that matter for storage: when demand is lowest, when it peaks, and the four hours a battery would charge and give power back. Eight provinces publish hourly data; Saskatchewan and Manitoba are covered with daily and monthly figures.

See the battery hours Sources and method

618.3 TWh

of electricity available for use across Canada in 2025, up 3.6% from 2024.
4 to 7 p.m.

is when an average winter weekday peaks in six of the eight provinces with hourly data. Quebec and New Brunswick peak in the morning.
Midnight to 6 a.m.

holds the four quietest weekday hours of every province with hourly data, in winter and in summer.
50% higher

demand in Prince Edward Island’s four busiest summer hours than its four quietest. Ontario’s gap is 41% in summer.

Canada’s weekday, hour by hour.

Each row is one province’s average weekday in 2025. Blue hours run below that province’s daily average and orange hours above it, so provinces of every size share one scale.

The thin bars under each row mark the four quietest hours, for charging, and the four busiest, for supplying the grid.

Winter weekdaysSummer weekdays

Lowest 4 hours: charge Highest 4 hours: discharge Equal second window, within 1%

Average weekdays in 2025, in each province’s local time, leaving out weekends and public holidays. Winter is January, February and December; summer is June, July and August.

Show the numbers

Winter weekdays, average demand in MW by local hour starting at
Province	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
BC	7,986	7,835	7,750	7,749	7,870	8,235	8,851	9,531	9,745	9,741	9,684	9,596	9,522	9,422	9,345	9,415	9,721	10,028	9,940	9,744	9,508	9,187	8,716	8,312
AB	10,575	10,467	10,408	10,389	10,434	10,596	10,974	11,397	11,532	11,561	11,583	11,580	11,539	11,513	11,501	11,526	11,674	11,825	11,750	11,640	11,514	11,313	11,042	10,777
ON	16,618	16,248	16,133	16,103	16,266	16,805	17,925	19,125	19,410	19,372	19,263	19,092	18,909	18,887	18,978	19,243	19,796	20,366	20,265	20,011	19,669	19,038	18,118	17,287
QC	29,096	28,957	29,022	29,240	29,763	30,968	32,713	33,748	33,272	32,344	31,526	30,959	30,460	30,195	30,266	31,062	32,501	33,475	33,278	32,834	32,272	31,440	30,396	29,609
NB	2,067	2,057	2,059	2,075	2,119	2,195	2,366	2,528	2,540	2,481	2,415	2,352	2,287	2,249	2,220	2,241	2,322	2,392	2,399	2,385	2,351	2,289	2,210	2,131
NS	1,653	1,628	1,611	1,608	1,624	1,669	1,771	1,852	1,875	1,846	1,809	1,785	1,772	1,753	1,744	1,764	1,830	1,902	1,894	1,868	1,835	1,784	1,721	1,698
PE	250	245	244	245	248	260	284	304	305	298	290	283	275	272	273	282	303	317	313	309	302	289	274	262
NL	1,109	1,101	1,103	1,112	1,135	1,193	1,286	1,343	1,341	1,319	1,299	1,285	1,261	1,241	1,253	1,295	1,349	1,351	1,329	1,312	1,286	1,239	1,184	1,137

Summer weekdays, average demand in MW by local hour starting at
Province	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
BC	6,290	6,046	5,883	5,801	5,809	5,974	6,366	6,891	7,241	7,450	7,608	7,738	7,861	7,938	7,973	8,030	8,143	8,258	8,145	7,954	7,765	7,587	7,169	6,708
AB	9,449	9,269	9,155	9,092	9,090	9,165	9,401	9,747	10,005	10,183	10,347	10,494	10,580	10,651	10,706	10,765	10,823	10,830	10,687	10,560	10,411	10,288	10,106	9,774
ON	16,041	15,174	14,615	14,249	14,126	14,373	15,129	16,263	17,174	17,701	18,211	18,616	18,957	19,346	19,452	19,635	20,004	20,404	20,408	20,254	19,941	19,508	18,366	17,092
QC	16,229	15,787	15,497	15,358	15,421	15,843	16,990	18,163	18,800	19,137	19,386	19,606	19,684	19,685	19,577	19,644	19,965	20,294	20,087	19,718	19,445	18,925	17,955	16,937
NB	1,131	1,095	1,072	1,061	1,064	1,095	1,195	1,324	1,389	1,421	1,446	1,464	1,461	1,468	1,460	1,462	1,490	1,494	1,468	1,435	1,409	1,382	1,309	1,211
NS	956	916	898	889	892	914	983	1,069	1,113	1,133	1,143	1,154	1,156	1,159	1,159	1,170	1,204	1,234	1,218	1,202	1,192	1,172	1,098	1,023
PE	151	143	140	139	140	147	164	182	188	187	184	183	181	180	180	187	199	210	211	211	209	203	186	166
NL	536	521	517	517	523	548	603	654	683	699	709	716	710	703	698	709	723	708	687	679	678	659	614	569

When a battery charges, and when it gives back.

A four-hour battery fills during the four quietest hours of the day and empties into the four busiest. On an average 2025 weekday, those hours fall here, in local time.

Four-hour battery windows by province for 2025: when to charge, when to discharge, and how much higher demand is in the discharge hours
Province	Charge	Discharge	Peak over low	Charge	Discharge	Peak over low
	Winter weekdays			Summer weekdays
British Columbia	1 to 5 a.m.	4 to 8 p.m.	+26%	2 to 6 a.m.	3 to 7 p.m.	+39%
Alberta	1 to 5 a.m.	4 to 8 p.m.	+12%	2 to 6 a.m.	2 to 6 p.m.	+18%
Saskatchewan	SaskPower publishes daily averages, not hours. See the daily chart below.
Manitoba	Manitoba Hydro does not publish hourly demand. See its monthly pattern below.
Ontario	1 to 5 a.m.	4 to 8 p.m.	+24%	2 to 6 a.m.	4 to 8 p.m.	+41%
Quebec	midnight to 4 a.m.	4 to 8 p.m.or6 to 10 a.m.	+14%	1 to 5 a.m.	4 to 8 p.m.	+29%
New Brunswick	midnight to 4 a.m.	7 to 11 a.m.	+21%	1 to 5 a.m.	3 to 7 p.m.	+38%
Nova Scotia	1 to 5 a.m.	5 to 9 p.m.	+16%	2 to 6 a.m.	4 to 8 p.m.	+35%
Prince Edward Island	1 to 5 a.m.	4 to 8 p.m.	+26%	1 to 5 a.m.	5 to 9 p.m.	+50%
Newfoundland and Labrador	midnight to 4 a.m.	4 to 8 p.m.or7 to 11 a.m.	+21%	1 to 5 a.m.	10 a.m. to 2 p.m.or2 to 6 p.m.	+37%

British Columbia
Winter Charge 1 to 5 a.m. Discharge 4 to 8 p.m. Peak over low +26%
Summer Charge 2 to 6 a.m. Discharge 3 to 7 p.m. Peak over low +39%
Alberta
Winter Charge 1 to 5 a.m. Discharge 4 to 8 p.m. Peak over low +12%
Summer Charge 2 to 6 a.m. Discharge 2 to 6 p.m. Peak over low +18%
Saskatchewan
Daily averages only. See the daily chart below.
Manitoba
No hourly data published. See the monthly pattern below.
Ontario
Winter Charge 1 to 5 a.m. Discharge 4 to 8 p.m. Peak over low +24%
Summer Charge 2 to 6 a.m. Discharge 4 to 8 p.m. Peak over low +41%
Quebec
Winter Charge midnight to 4 a.m. Discharge 4 to 8 p.m. or, within 1%, 6 to 10 a.m. Peak over low +14%
Summer Charge 1 to 5 a.m. Discharge 4 to 8 p.m. Peak over low +29%
New Brunswick
Winter Charge midnight to 4 a.m. Discharge 7 to 11 a.m. Peak over low +21%
Summer Charge 1 to 5 a.m. Discharge 3 to 7 p.m. Peak over low +38%
Nova Scotia
Winter Charge 1 to 5 a.m. Discharge 5 to 9 p.m. Peak over low +16%
Summer Charge 2 to 6 a.m. Discharge 4 to 8 p.m. Peak over low +35%
Prince Edward Island
Winter Charge 1 to 5 a.m. Discharge 4 to 8 p.m. Peak over low +26%
Summer Charge 1 to 5 a.m. Discharge 5 to 9 p.m. Peak over low +50%
Newfoundland and Labrador
Winter Charge midnight to 4 a.m. Discharge 4 to 8 p.m. or, within 1%, 7 to 11 a.m. Peak over low +21%
Summer Charge 1 to 5 a.m. Discharge 10 a.m. to 2 p.m. or, within 1%, 2 to 6 p.m. Peak over low +37%

Peak over low is how much higher average demand runs in the four discharge hours than in the four charge hours. Where a second set of four hours comes within 1% of the best, both are shown. These are averages: any single day differs, and a working battery follows live prices and forecasts. Ontario is the only province with hourly data whose highest hour of 2025 came in summer.

In Alberta, the quiet hours are the cheap hours.

Alberta’s wholesale electricity price is set in an open market and published for every hour. On 2025 weekdays, the price from 5 to 9 p.m. averaged 4.8 times the price from 1 to 5 a.m. overnight.

The cheapest hours line up with the quietest ones. In winter the price peak also lines up with the demand peak; in summer, prices peak later in the evening than demand does. That gap between night and evening is what a battery is built to use.

Alberta pool price on an average 2025 weekday Each hour as a multiple of the weekday average price

0.44× 2.6×

Below the weekday average Above the weekday average Charge hours, 1 to 5 a.m. Discharge hours, 5 to 9 p.m.

Show the numbers

Average 2025 weekday pool price, as a multiple of the weekday average, by local hour starting at
Hour	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Multiple	0.58	0.48	0.45	0.44	0.47	0.56	0.80	1.03	0.88	0.69	0.63	0.66	0.71	0.79	0.70	0.77	1.29	1.79	2.16	2.57	2.40	1.69	0.82	0.63

How much power each province uses.

Quebec and Ontario use 60% of Canada’s electricity between them. Newfoundland and Labrador and Alberta grew fastest in 2025, by 9.0% and 6.2%.

Quebec 220.0 TWh up +4.3%
Ontario 151.5 TWh up +3.1%
Alberta 83.9 TWh up +6.2%
British Columbia 70.2 TWh up +1.4%
Manitoba 26.0 TWh up +1.6%
Saskatchewan 25.8 TWh down −0.9%
New Brunswick 14.4 TWh up +2.3%
Newfoundland and Labrador 11.8 TWh up +9.0%
Nova Scotia 11.4 TWh up +1.5%
Prince Edward Island 1.7 TWh down −0.5%

Total electricity available for use in 2025, in terawatt-hours, and the change from 2024. The three territories add 1.6 TWh, for 618.3 TWh across Canada. Source: Statistics Canada, Table 25-10-0016-01.

Province by province.

Each province’s two average weekdays, its year month by month, how its local price plan lines up with its battery hours, and where every number came from.

British Columbia

BC Hydro balancing authority load. All times are local Pacific time.

2025 peak hour: 11,359 MWMonday, February 3, 5 to 6 p.m.
Average demand: 7,682 MWAcross the 8,759 hours published for 2025
Available for use in 2025: 70.2 TWh+1.4% from 2024, Statistics Canada
Winter against summer: 1.26×as much electricity in January, February and December as in June, July and August

Winter weekdays Jan, Feb and Dec, average MW

Charge 1 to 5 a.m. Discharge 4 to 8 p.m. +26% at the peak

Summer weekdays Jun, Jul and Aug, average MW

Charge 2 to 6 a.m. Discharge 3 to 7 p.m. +39% at the peak

Month by month Electricity available for use, GWh

7,027

On winter weekdays the day’s peak came from 5 to 6 p.m. on 69% of days. On summer weekdays the day’s peak came from 5 to 6 p.m. on 92% of days.

Local price plan: BC Hydro time-of-day pricing (optional, residential)

Overnight discount, 11 p.m. to 7 a.m. every day
On-peak surcharge, 4 to 9 p.m. every day

Hourly data: BC Hydro, balancing authority load, 2025. Hour ending, Pacific time. Gaps: The repeated hour when clocks went back on November 2 is not in the file. Monthly and annual totals: Statistics Canada, Table 25-10-0016-01.

Show the hourly numbers

British Columbia, average weekday demand in MW by local hour, 2025
Hour starting	Winter	Summer
12 a.m.	7,986	6,290
1 a.m.	7,835	6,046
2 a.m.	7,750	5,883
3 a.m.	7,749	5,801
4 a.m.	7,870	5,809
5 a.m.	8,235	5,974
6 a.m.	8,851	6,366
7 a.m.	9,531	6,891
8 a.m.	9,745	7,241
9 a.m.	9,741	7,450
10 a.m.	9,684	7,608
11 a.m.	9,596	7,738
12 p.m.	9,522	7,861
1 p.m.	9,422	7,938
2 p.m.	9,345	7,973
3 p.m.	9,415	8,030
4 p.m.	9,721	8,143
5 p.m.	10,028	8,258
6 p.m.	9,940	8,145
7 p.m.	9,744	7,954
8 p.m.	9,508	7,765
9 p.m.	9,187	7,587
10 p.m.	8,716	7,169
11 p.m.	8,312	6,708

Alberta

AESO, Alberta Internal Load. All times are local Mountain time.

2025 peak hour: 12,785 MWThursday, December 11, 5 to 6 p.m.
Average demand: 10,316 MWAcross the 8,760 hours published for 2025
Available for use in 2025: 83.9 TWh+6.2% from 2024, Statistics Canada
Winter against summer: 1.10×as much electricity in January, February and December as in June, July and August

Winter weekdays Jan, Feb and Dec, average MW

Charge 1 to 5 a.m. Discharge 4 to 8 p.m. +12% at the peak

Summer weekdays Jun, Jul and Aug, average MW

Charge 2 to 6 a.m. Discharge 2 to 6 p.m. +18% at the peak

Month by month Electricity available for use, GWh

7,968

On winter weekdays the day’s peak came from 5 to 6 p.m. on 66% of days, and from 6 to 7 p.m. on 24%. On summer weekdays the day’s peak came from 5 to 6 p.m. on 56% of days, and from 4 to 5 p.m. on 29%.

Alberta’s wholesale price is lowest in the same overnight hours as its demand.

Hourly data: AESO, historical pool price report, 2025 (Alberta Internal Load and pool price). Hour ending, Mountain time. Gaps: None. Monthly and annual totals: Statistics Canada, Table 25-10-0016-01.

Show the hourly numbers

Alberta, average weekday demand in MW by local hour, 2025
Hour starting	Winter	Summer
12 a.m.	10,575	9,449
1 a.m.	10,467	9,269
2 a.m.	10,408	9,155
3 a.m.	10,389	9,092
4 a.m.	10,434	9,090
5 a.m.	10,596	9,165
6 a.m.	10,974	9,401
7 a.m.	11,397	9,747
8 a.m.	11,532	10,005
9 a.m.	11,561	10,183
10 a.m.	11,583	10,347
11 a.m.	11,580	10,494
12 p.m.	11,539	10,580
1 p.m.	11,513	10,651
2 p.m.	11,501	10,706
3 p.m.	11,526	10,765
4 p.m.	11,674	10,823
5 p.m.	11,825	10,830
6 p.m.	11,750	10,687
7 p.m.	11,640	10,560
8 p.m.	11,514	10,411
9 p.m.	11,313	10,288
10 p.m.	11,042	10,106
11 p.m.	10,777	9,774

Saskatchewan

SaskPower daily system demand. All times are local Central time.

Busiest day of 2025: 3,546 MWFebruary 3, averaged over 24 hours
All-time record: 3,910 MWDecember 30, 2021, per SaskPower
Available for use in 2025: 25.8 TWh−0.9% from 2024, Statistics Canada
Winter against summer: 1.19×as much electricity in January, February and December as in June, July and August

Every day of 2025 Average demand over each 24 hours, MW

20 days of 2025 have no published value and show as gaps. Source: SaskPower daily system demand, via Statistics Canada high-frequency electricity data.

Month by month Electricity available for use, GWh

2,538

SaskPower publishes one figure a day, the average demand over 24 hours, so hourly peaks and battery hours cannot be worked out from public data. The daily line still shows the shape of the year: busiest in January, February and December.

Daily data: SaskPower daily system demand, published through Statistics Canada high-frequency electricity data. One value a day: the average demand over 24 hours. Saskatchewan keeps Central Standard Time all year. Gaps: 20 days of 2025 have no published value. All-time record from SaskPower’s own page. Monthly and annual totals: Statistics Canada, Table 25-10-0016-01.

Manitoba

Manitoba Hydro. All times are local Central time.

Record peak: 5,111.5 MWJanuary 20, 2025, around 8 a.m.
Available for use in 2025: 26.0 TWh+1.6% from 2024, Statistics Canada
Winter against summer: 1.57×as much electricity in January, February and December as in June, July and August

Month by month Electricity available for use, GWh

2,969

Manitoba Hydro does not publish hourly demand. Its record peak of 5,111.5 MW came around 8 a.m. on January 20, 2025, beating the 4,927.8 MW set on December 12, 2024.

Record peak: Manitoba Hydro record peak, reported by CBC News. Central time. Monthly and annual totals: Statistics Canada, Table 25-10-0016-01.

Ontario

IESO, Ontario Demand. All times are local Eastern time.

2025 peak hour: 24,862 MWTuesday, June 24, 7 to 8 p.m.
Average demand: 16,621 MWAcross the 8,759 hours published for 2025
Available for use in 2025: 151.5 TWh+3.1% from 2024, Statistics Canada
Winter against summer: About evenwinter and summer months use about the same (1.01×)

Winter weekdays Jan, Feb and Dec, average MW

Charge 1 to 5 a.m. Discharge 4 to 8 p.m. +24% at the peak

Summer weekdays Jun, Jul and Aug, average MW

Charge 2 to 6 a.m. Discharge 4 to 8 p.m. +41% at the peak

Month by month Electricity available for use, GWh

14,325

On winter weekdays the day’s peak came from 5 to 6 p.m. on 63% of days, and from 6 to 7 p.m. on 29%. On summer weekdays the day’s peak came from 6 to 7 p.m. on 33% of days, and from 5 to 6 p.m. on 29%.

Local price plan: Ultra-Low Overnight price plan (Ontario Energy Board)

Ultra-low overnight, 11 p.m. to 7 a.m. every day
On-peak, 4 to 9 p.m. weekdays

Mid-peak weekdays 7 a.m. to 4 p.m. and 9 to 11 p.m.; weekends and holidays off-peak 7 a.m. to 11 p.m. Standard time-of-use plan: on-peak weekdays 7 to 11 a.m. and 5 to 7 p.m. in winter, 11 a.m. to 5 p.m. in summer; off-peak 7 p.m. to 7 a.m.

Hourly data: IESO, hourly demand report, 2025 (Ontario Demand). Hour ending, Eastern Standard Time all year. We moved summer hours onto daylight time. Gaps: One hour on May 1. Monthly and annual totals: Statistics Canada, Table 25-10-0016-01.

Show the hourly numbers

Ontario, average weekday demand in MW by local hour, 2025
Hour starting	Winter	Summer
12 a.m.	16,618	16,041
1 a.m.	16,248	15,174
2 a.m.	16,133	14,615
3 a.m.	16,103	14,249
4 a.m.	16,266	14,126
5 a.m.	16,805	14,373
6 a.m.	17,925	15,129
7 a.m.	19,125	16,263
8 a.m.	19,410	17,174
9 a.m.	19,372	17,701
10 a.m.	19,263	18,211
11 a.m.	19,092	18,616
12 p.m.	18,909	18,957
1 p.m.	18,887	19,346
2 p.m.	18,978	19,452
3 p.m.	19,243	19,635
4 p.m.	19,796	20,004
5 p.m.	20,366	20,404
6 p.m.	20,265	20,408
7 p.m.	20,011	20,254
8 p.m.	19,669	19,941
9 p.m.	19,038	19,508
10 p.m.	18,118	18,366
11 p.m.	17,287	17,092

Quebec

Hydro-Québec demand via Statistics Canada. All times are local Eastern time.

2025 peak hour: 40,024 MWWednesday, January 22, 7 to 8 a.m.
Average demand: 22,764 MWAcross the 8,553 hours published for 2025
Available for use in 2025: 220.0 TWh+4.3% from 2024, Statistics Canada
Winter against summer: 1.60×as much electricity in January, February and December as in June, July and August

Winter weekdays Jan, Feb and Dec, average MW

Charge midnight to 4 a.m. Discharge 4 to 8 p.m. or 6 to 10 a.m. +14% at the peak

The two discharge windows are within 1% of each other.

Summer weekdays Jun, Jul and Aug, average MW

Charge 1 to 5 a.m. Discharge 4 to 8 p.m. +29% at the peak

Month by month Electricity available for use, GWh

25,021

On winter weekdays the day’s peak came from 7 to 8 a.m. on 60% of days, and from 5 to 6 p.m. on 25%. On summer weekdays the day’s peak came from 5 to 6 p.m. on 83% of days.

Local price plan: Hydro-Québec Rate Flex D (peak demand events)

Morning peak events, 6 to 10 a.m. event days, Dec 1 to Mar 31
Evening peak events, 4 to 8 p.m. event days, Dec 1 to Mar 31

Events can fall on any day of the week, up to 120 hours per winter.

Hourly data: Statistics Canada high-frequency electricity data, Quebec demand (15-minute values from Hydro-Québec). 15-minute values in UTC, averaged into local hours. Gaps: Part of June (528 of its 720 hours have data) and a few other hours. Cross-checked against Hydro-Québec’s own hourly data: the January 22 peak hour agrees to within 0.1%. Monthly and annual totals: Statistics Canada, Table 25-10-0016-01.

Show the hourly numbers

Quebec, average weekday demand in MW by local hour, 2025
Hour starting	Winter	Summer
12 a.m.	29,096	16,229
1 a.m.	28,957	15,787
2 a.m.	29,022	15,497
3 a.m.	29,240	15,358
4 a.m.	29,763	15,421
5 a.m.	30,968	15,843
6 a.m.	32,713	16,990
7 a.m.	33,748	18,163
8 a.m.	33,272	18,800
9 a.m.	32,344	19,137
10 a.m.	31,526	19,386
11 a.m.	30,959	19,606
12 p.m.	30,460	19,684
1 p.m.	30,195	19,685
2 p.m.	30,266	19,577
3 p.m.	31,062	19,644
4 p.m.	32,501	19,965
5 p.m.	33,475	20,294
6 p.m.	33,278	20,087
7 p.m.	32,834	19,718
8 p.m.	32,272	19,445
9 p.m.	31,440	18,925
10 p.m.	30,396	17,955
11 p.m.	29,609	16,937

New Brunswick

NB Power, in-province demand. All times are local Atlantic time.

2025 peak hour: 3,211 MWWednesday, January 22, 8 to 9 a.m.
Average demand: 1,661 MWAcross the 8,759 hours published for 2025
Available for use in 2025: 14.4 TWh+2.3% from 2024, Statistics Canada
Winter against summer: 1.68×as much electricity in January, February and December as in June, July and August

Winter weekdays Jan, Feb and Dec, average MW

Charge midnight to 4 a.m. Discharge 7 to 11 a.m. +21% at the peak

Summer weekdays Jun, Jul and Aug, average MW

Charge 1 to 5 a.m. Discharge 3 to 7 p.m. +38% at the peak

Month by month Electricity available for use, GWh

1,695

On winter weekdays the day’s peak came from 8 to 9 a.m. on 52% of days, and from 7 to 8 a.m. on 21%. On summer weekdays the day’s peak came from 5 to 6 p.m. on 49% of days, and from 4 to 5 p.m. on 25%.

Hourly data: NB Power, system information archive, 2025 (NB demand). Hour ending, Atlantic time, checked against 5-minute data. Gaps: One hour on September 30. Monthly and annual totals: Statistics Canada, Table 25-10-0016-01.

Show the hourly numbers

New Brunswick, average weekday demand in MW by local hour, 2025
Hour starting	Winter	Summer
12 a.m.	2,067	1,131
1 a.m.	2,057	1,095
2 a.m.	2,059	1,072
3 a.m.	2,075	1,061
4 a.m.	2,119	1,064
5 a.m.	2,195	1,095
6 a.m.	2,366	1,195
7 a.m.	2,528	1,324
8 a.m.	2,540	1,389
9 a.m.	2,481	1,421
10 a.m.	2,415	1,446
11 a.m.	2,352	1,464
12 p.m.	2,287	1,461
1 p.m.	2,249	1,468
2 p.m.	2,220	1,460
3 p.m.	2,241	1,462
4 p.m.	2,322	1,490
5 p.m.	2,392	1,494
6 p.m.	2,399	1,468
7 p.m.	2,385	1,435
8 p.m.	2,351	1,409
9 p.m.	2,289	1,382
10 p.m.	2,210	1,309
11 p.m.	2,131	1,211

Nova Scotia

Nova Scotia Power, in-province load. All times are local Atlantic time.

2025 peak hour: 2,267 MWThursday, February 6, 7 to 8 a.m.
Average demand: 1,313 MWAcross the 8,180 hours published for 2025
Available for use in 2025: 11.4 TWh+1.5% from 2024, Statistics Canada
Winter against summer: 1.57×as much electricity in January, February and December as in June, July and August

Winter weekdays Jan, Feb and Dec, average MW

Charge 1 to 5 a.m. Discharge 5 to 9 p.m. +16% at the peak

Summer weekdays Jun, Jul and Aug, average MW

Charge 2 to 6 a.m. Discharge 4 to 8 p.m. +35% at the peak

Month by month Electricity available for use, GWh

1,303

On winter weekdays the day’s peak came from 5 to 6 p.m. on 40% of days. On summer weekdays the day’s peak came from 5 to 6 p.m. on 71% of days.

Local price plan: Nova Scotia Power Time-of-Day rate plan

Off-peak, 11 p.m. to 7 a.m. weekdays (weekends and holidays off-peak all day)
Winter on-peak, 7 a.m. to noon weekdays, Dec to Feb
Winter on-peak, 4 to 11 p.m. weekdays, Dec to Feb

Hourly data: Nova Scotia Power OASIS, hourly total net Nova Scotia load, 2025. Hour ending, Atlantic time. Gaps: April 1 to 25 are not in the published data, nor one hour on March 8 or the repeated hour on November 2. Monthly and annual totals: Statistics Canada, Table 25-10-0016-01.

Show the hourly numbers

Nova Scotia, average weekday demand in MW by local hour, 2025
Hour starting	Winter	Summer
12 a.m.	1,653	956
1 a.m.	1,628	916
2 a.m.	1,611	898
3 a.m.	1,608	889
4 a.m.	1,624	892
5 a.m.	1,669	914
6 a.m.	1,771	983
7 a.m.	1,852	1,069
8 a.m.	1,875	1,113
9 a.m.	1,846	1,133
10 a.m.	1,809	1,143
11 a.m.	1,785	1,154
12 p.m.	1,772	1,156
1 p.m.	1,753	1,159
2 p.m.	1,744	1,159
3 p.m.	1,764	1,170
4 p.m.	1,830	1,204
5 p.m.	1,902	1,234
6 p.m.	1,894	1,218
7 p.m.	1,868	1,202
8 p.m.	1,835	1,192
9 p.m.	1,784	1,172
10 p.m.	1,721	1,098
11 p.m.	1,698	1,023

Prince Edward Island

On-island load via Statistics Canada. All times are local Atlantic time.

2025 peak hour: 380 MWThursday, January 30, 6 to 7 p.m.
Average demand: 209 MWAcross the 8,472 hours published for 2025
Available for use in 2025: 1.7 TWh−0.5% from 2024, Statistics Canada
Winter against summer: 1.42×as much electricity in January, February and December as in June, July and August

Winter weekdays Jan, Feb and Dec, average MW

Charge 1 to 5 a.m. Discharge 4 to 8 p.m. +26% at the peak

Summer weekdays Jun, Jul and Aug, average MW

Charge 1 to 5 a.m. Discharge 5 to 9 p.m. +50% at the peak

Month by month Electricity available for use, GWh

181

On winter weekdays the day’s peak came from 5 to 6 p.m. on 58% of days. On summer weekdays the day’s peak came from 8 to 9 p.m. on 28% of days, and from 7 to 8 p.m. on 24%.

Hourly data: Statistics Canada high-frequency electricity data, Prince Edward Island on-island load (15-minute values from the Government of PEI). 15-minute values in local time, averaged into hours. Gaps: Parts of February and June and a few other hours: 8,472 of the year’s 8,760 hours have data. Monthly and annual totals: Statistics Canada, Table 25-10-0016-01.

Show the hourly numbers

Prince Edward Island, average weekday demand in MW by local hour, 2025
Hour starting	Winter	Summer
12 a.m.	250	151
1 a.m.	245	143
2 a.m.	244	140
3 a.m.	245	139
4 a.m.	248	140
5 a.m.	260	147
6 a.m.	284	164
7 a.m.	304	182
8 a.m.	305	188
9 a.m.	298	187
10 a.m.	290	184
11 a.m.	283	183
12 p.m.	275	181
1 p.m.	272	180
2 p.m.	273	180
3 p.m.	282	187
4 p.m.	303	199
5 p.m.	317	210
6 p.m.	313	211
7 p.m.	309	211
8 p.m.	302	209
9 p.m.	289	203
10 p.m.	274	186
11 p.m.	262	166

Newfoundland and Labrador

Island of Newfoundland demand via Statistics Canada. All times are local Newfoundland time.

2025 peak hour: 1,711 MWThursday, January 23, 7 to 8 a.m.
Average demand: 941 MWAcross the 6,164 hours published for 2025
Available for use in 2025: 11.8 TWh+9.0% from 2024, Statistics Canada
Winter against summer: 1.72×as much electricity in January, February and December as in June, July and August

Winter weekdays Jan, Feb and Dec, average MW

Charge midnight to 4 a.m. Discharge 4 to 8 p.m. or 7 to 11 a.m. +21% at the peak

The two discharge windows are within 1% of each other.

Summer weekdays Jun, Jul and Aug, average MW

Charge 1 to 5 a.m. Discharge 10 a.m. to 2 p.m. or 2 to 6 p.m. +37% at the peak

The two discharge windows are within 1% of each other.

Month by month Electricity available for use, GWh

1,299

On winter weekdays the day’s peak came from 7 to 8 a.m. on 37% of days, and from 4 to 5 p.m. on 35%. On summer weekdays the day’s peak came from 4 to 5 p.m. on 62% of days, and from 11 a.m. to noon on 27%.

Hourly data: Statistics Canada high-frequency electricity data, Newfoundland demand (values about every 5 minutes from Newfoundland and Labrador Hydro). Local time, averaged into hours. Gaps: October and November, large parts of March, May, June, September and December, and some hours in January, July and August: 6,164 of the year’s 8,760 hours have data. The hourly data covers the Island of Newfoundland. Monthly and annual totals cover the whole province. Monthly and annual totals: Statistics Canada, Table 25-10-0016-01.

Show the hourly numbers

Newfoundland and Labrador, average weekday demand in MW by local hour, 2025
Hour starting	Winter	Summer
12 a.m.	1,109	536
1 a.m.	1,101	521
2 a.m.	1,103	517
3 a.m.	1,112	517
4 a.m.	1,135	523
5 a.m.	1,193	548
6 a.m.	1,286	603
7 a.m.	1,343	654
8 a.m.	1,341	683
9 a.m.	1,319	699
10 a.m.	1,299	709
11 a.m.	1,285	716
12 p.m.	1,261	710
1 p.m.	1,241	703
2 p.m.	1,253	698
3 p.m.	1,295	709
4 p.m.	1,349	723
5 p.m.	1,351	708
6 p.m.	1,329	687
7 p.m.	1,312	679
8 p.m.	1,286	678
9 p.m.	1,239	659
10 p.m.	1,184	614
11 p.m.	1,137	569

Sources and method.

Everything on this page comes from public data published by grid operators, utilities, regulators and Statistics Canada, plus one news report for Manitoba’s record peak, retrieved in October 2026. Download it and check our work.

How the numbers were made

Hourly demand. We read every hour of 2025 from each operator’s published data and put it on local clock time, labelled by the hour it starts. Sources that publish 5 or 15-minute values were averaged into hours.
Average weekdays. Winter is January, February and December 2025. Summer is June, July and August. Weekends and public holidays are left out: ten common holidays (New Year’s Day, the February holiday, Good Friday, Victoria Day, Canada Day, the August civic holiday, Labour Day, Thanksgiving, Christmas and Boxing Day), and Quebec’s own holidays for Quebec. Each hour is averaged across the remaining days.
Battery hours. On each average weekday we found the run of four hours in a row with the lowest average demand (charge) and the run with the highest (discharge). When another run with no hours in common comes within 1%, both are shown.
Peaks. The 2025 peak is the single highest hour in the data. Daily peak counts are how often each hour was the busiest hour of a weekday. Hours within 0.5% of an average weekday’s top hour are treated as part of its peak.
Annual and monthly energy. These use Statistics Canada’s electricity available for use in each province, so all ten provinces are measured the same way. Operators measure demand differently: for Ontario, the IESO’s Ontario Demand totalled 145.6 TWh, against 151.5 TWh from Statistics Canada.
Prices. Alberta’s price chart shows each hour as a multiple of the weekday average, from the AESO’s hourly pool price. Prices are not shown in dollars here or in the downloads.

Download the data

Sources

BCBC Hydro, balancing authority load, 2025 (BC Hydro’s historical data page). Gaps: The repeated hour when clocks went back on November 2 is not in the file.
ABAESO, historical pool price report, 2025 (Alberta Internal Load and pool price) (AESO). Gaps: None.
SKSaskPower daily system demand, published through Statistics Canada high-frequency electricity data (SaskPower’s system page, with the all-time record). Gaps: 20 days of 2025 have no published value.
MBManitoba Hydro record peak, reported by CBC News.
ONIESO, hourly demand report, 2025 (Ontario Demand). Gaps: One hour on May 1.
QCStatistics Canada high-frequency electricity data, Quebec demand (15-minute values from Hydro-Québec). Gaps: Part of June (528 of its 720 hours have data) and a few other hours.
NBNB Power, system information archive, 2025 (NB demand). Gaps: One hour on September 30.
NSNova Scotia Power OASIS, hourly total net Nova Scotia load, 2025. Gaps: April 1 to 25 are not in the published data, nor one hour on March 8 or the repeated hour on November 2.
PEStatistics Canada high-frequency electricity data, Prince Edward Island on-island load (15-minute values from the Government of PEI). Gaps: Parts of February and June and a few other hours: 8,472 of the year’s 8,760 hours have data.
NLStatistics Canada high-frequency electricity data, Newfoundland demand (values about every 5 minutes from Newfoundland and Labrador Hydro). Gaps: October and November, large parts of March, May, June, September and December, and some hours in January, July and August: 6,164 of the year’s 8,760 hours have data.
CAStatistics Canada, Table 25-10-0016-01, electric power generation, monthly receipts, deliveries and availability (DOI). Release of October 7, 2026.
CAStatistics Canada, Canadian Centre for Energy Information, high-frequency electricity data, for Quebec, Saskatchewan, Prince Edward Island and Newfoundland.
BCPrice plan hours: BC Hydro time-of-day pricing (optional, residential).
ONPrice plan hours: Ultra-Low Overnight price plan (Ontario Energy Board).
QCPrice plan hours: Hydro-Québec Rate Flex D (peak demand events).
NSPrice plan hours: Nova Scotia Power Time-of-Day rate plan.

Statistics Canada data is used under the Statistics Canada Open Licence. Operator data is used with attribution to each operator. Hydro-Québec’s own open data carries a non-commercial licence, so we use it only to cross-check Statistics Canada’s Quebec figures.

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