Calendar of actual maximum demand in the past(Tokyo area)

Previous day’s record will be posted at approx. 6:00 am daily, and updated at approx. 6:30 pm if necessary.

Previous day’s record will be posted at approx. 6:00 am daily, and updated at approx. 6:30 pm if necessary.

Oct,2025

*As the peak demand data will display from the 2nd day.

Peak Demand
Peak Usage
Sun
Mon
Tue
Wed
Thu
Fri
Sat

1

83%
10:00-11:00
D3,437
S4,137

2

86%
14:00-15:00
D3,656
S4,234

3

82%
10:00-11:00
D3,424
S4,175

4

83%
17:00-18:00
D2,944
S3,515

5

84%
18:00-19:00
D3,152
S3,734

6

88%
11:00-12:00
D3,893
S4,415

7

79%
14:00-15:00
D3,409
S4,278

8

80%
13:00-14:00
D3,772
S4,681
D
Actual maximum demand
S
Max supply capacity x10 MW
This month’s peak demand date
*As the peak demand data will display from the 2nd day.
Sun
Mon
Tue
Wed
Thu
Fri
Sat

1

86%
6:00-7:00
D2,580
S2,989

2

88%
13:00-14:00
D3,652
S4,148

3

85%
9:00-10:00
D3,370
S3,943

4

89%
9:00-10:00
D2,822
S3,164

5

92%
13:00-14:00
D3,091
S3,339

6

88%
5:00-6:00
D2,365
S2,669

7

86%
17:00-18:00
D3,365
S3,905

8

90%
16:00-17:00
D3,640
S4,004
D
Actual maximum demand
S
Max supply capacity x10 MW
Date
(Day of week)
Kinds Peak demand
time zone
Actual maximum
demand
Max supply
capacity
Consumption
rate
1
Wed
D10:00-11:003,4374,13783
U6:00-7:002,5802,98986
2
Thu
D14:00-15:003,6564,23486
U13:00-14:003,6524,14888
3
Fri
D10:00-11:003,4244,17582
U9:00-10:003,3703,94385
4
Sat
D17:00-18:002,9443,51583
U9:00-10:002,8223,16489
5
Sun
D18:00-19:003,1523,73484
U13:00-14:003,0913,33992
6
Mon
D11:00-12:003,8934,41588
U5:00-6:002,3652,66988
7
Tue
D14:00-15:003,4094,27879
U17:00-18:003,3653,90586
8
Wed
D13:00-14:003,7724,68180
U16:00-17:003,6404,00490
D
Peak demand
U
Peak Usage
x10 MW
This month’s peak demand date
*As the peak demand data will display from the 2nd day.

Monthly peak demand
(Will be posted on the 2nd day of each month.)

A table listing the peak demand occcurrence dates since January, 2016 and that day’s performance value will be displayed (Will be posted on the 2nd day of each month.)

Display Date
(Day of week)
Peak demand
time zone
Actual maximum
demand
Max supply
capacity
Actual consumption
rate
Sep, 20252(Tue)14:00-15:005,521x10 MW6,251x10 MW
88%
Aug, 20256(Wed)13:00-14:005,754x10 MW6,742x10 MW
85%
Jul, 202525(Fri)13:00-14:005,451x10 MW6,262x10 MW
87%
Jun, 202517(Tue)14:00-15:004,812x10 MW5,304x10 MW
90%
May, 202521(Wed)15:00-16:003,736x10 MW4,185x10 MW
89%
Apr, 20251(Tue)11:00-12:004,339x10 MW4,841x10 MW
89%
Mar, 20255(Wed)9:00-10:004,837x10 MW5,259x10 MW
91%
Feb, 202512(Wed)9:00-10:004,600x10 MW5,319x10 MW
86%
Jan, 20256(Mon)9:00-10:004,570x10 MW4,961x10 MW
92%
Display Date
(Day of week)
Peak demand
time zone
Actual maximum demandMax supply capacity Actual
consumption
rate
Sep,
2025
2
(Tue)
14:00-15:005,5216,251
88
Aug,
2025
6
(Wed)
13:00-14:005,7546,742
85
Jul,
2025
25
(Fri)
13:00-14:005,4516,262
87
Jun,
2025
17
(Tue)
14:00-15:004,8125,304
90
May,
2025
21
(Wed)
15:00-16:003,7364,185
89
Apr,
2025
1
(Tue)
11:00-12:004,3394,841
89
Mar,
2025
5
(Wed)
9:00-10:004,8375,259
91
Feb,
2025
12
(Wed)
9:00-10:004,6005,319
86
Jan,
2025
6
(Mon)
9:00-10:004,5704,961
92
Actual maximum demand Download in CSV format

How to view "Calendar of actual maximum demand in the past"

Monthly record of daily actual maximum demand, consumption rate in peak usage times and that day’s max supply capacity can be viewed here.

  • Consumption rate
  • Peak demand zone
  • Actual maximum demand(unit:×10MW)
  • Max supply capacity(unit:×10MW)

*The day marked with a is the day of that month with the largest power consumption

Peak demand

Consumption rate calculations based on actual maximum demand and that day’s max supply capacity.

Peak usage

Indicates actual power, supply capability, consumption rate, and time period of peak consumption rate time.

Max supply capacity

The month’s peak demand occurrence date and record.

*In cases where supply capacity changes during the day, given that calculations are based on the most recent revised value, the value may differ from that day’s consumption rate value.

Actual consumption rate

Daily peak generational output capacity.

*As a general rule, if the supply capacity changes during the day, the most recent revised value will be displayed irrespective of the peak demand time zone.

Day of the month with the largest power consumption

The month’s peak demand occurrence date and record.

*Display to be begin from the 2nd day of each month.

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