Reference 1

September 10 1999

Summer 1999 Electric Power Supply

1. Summer Peak Temperature Trends (average , July-August)

<Appendix>

Number of Full Summer Days and Balance between Average Year and this Summer

(unit: day)


Sapporo
Sendai
Tokyo
Nagoya
Toyama
Osaka
Hiroshima
Takamatsu
Fukuoka
Naha
Average of 10 Cities
No. of
Full Summer Days
(Balance)

15
(7.9)

25
(9.9)

45
(9.1)

45
(1.8)

31
(0.2)

51
(1.4)

39
(-7.3)

42
(-1.9)

33
(-11.1)

50
(-0.2)

38
(1.0)

Note: Balance shows average number in July and August in an average year

2. Peak Load and Daily Peak Load Record for this Summer

(unit: mkW, mkWh, %)

Company
Peak Load
Best Record
(date)
Ratio

Daily Peak Load
Best Record
Ratio (compared to last year)
Hokkaido

#

4.74

[7]

(8/9 34.6C)

451
(1997/7/25)

105.1

#

0.94

[8]

(8/10)

89
(1997/7/31)

105.4
(107.5)

Tohoku

*

14.43

[3]

(8/4 31.0C)

1,359
(1998/7/28)

106.2

*

2.68

[4]

(8/6)

250
(1998/7/28)

107.2
(107.2)

Tokyo

59.25

(9/1 34.2C)

5,940
(1996/7/18)

99.7

10.69

(8/4)

1,078
(1996/7/18)

99.2
(99.8)

Chubu

25.81

(8/3 133.7C)

2,639
(1998/8/4)

97.8

4.65

(8/31)

472
(1998/8/4)

98.4
(98.4)

Hokuriku

*

5.28

[2]

(8/4 34.2C)

523
(1997/8/22)

101.0

*

0.97

[2]

(8/4)

94
(1997/8/22)

102.8
(109.1)

Kansai

30.71

(8/31 35.6C)

3,223
(1996/8/2)

95.3

5.57

(8/31)

579
(1998/8/4)

96.2
(96.2)

Chugoku

10.67

(8/9 34.4C)

1,127
(1996/8/2)

94.7

1.96

(8/9)

204
(1998/8/4)

96.2
(96.2)

Shikoku

5.24

(8/30 31.8C)

580
(1998/8/7)

90.4

0.95

(8/31)

106
(1998/8/7)

90.0
(90.0)

Kyushu

14.85

(9/20 33.5C)

1,612
(1998/8/6)

90.4

2.70

(8/11)

299
(1998/8/7)

90.5
(90.5)

Okinawa

1.40

(9/20 33.2C)

141
(1998/7/15)

98.3

0.28

(7/19)

29
(1998/8/21)

97.6
(97.6)

10 Companies

168.66

(8/4)

17,113
(1995/8/25)

98.6

*

30.99

[1]

(8/4)

3,092
(1998/8/4)

100.2

Note: 1.

* indicates newly established record
# indicates renewed summer record
[ ] indicates the number of renewed records

2.

Temperatures shown in Peak load section are for cities where each electric power company's head office is located

3.

Peak Load and Daily Peak Load figures are based on bulletin figures (small outer islands excluded)

3. Load Sensitivity to Temperatures this Summer

Total of Load Sensitivity to Temperatures across the 10 power companies (based on weekday data for July and August; estimated at 4.9mkW/C (an increase of approx. 0.1mkW/C over the previous year)

Correlation Ratio between Peak load and Temperature