P-5

Ancillary Service Prices, Day Ahead Market

07/31/2004

Time StampEastWest
10 Min Spinning Reserve ($/MWHr)10 Min Non-Synchronous Reserve ($/MWHr)30 Min Operating Reserve ($/MWHr)Regulation ($/MWHr)10 Min Spinning Reserve ($/MWHr)10 Min Non-Synchronous Reserve ($/MWHr)30 Min Operating Reserve ($/MWHr)Regulation ($/MWHr)
00:002.522.521.28201.281.281.2820
01:000.370.370.37200.370.370.3720
02:000.150.150.15200.150.150.1520
03:000.10.10.1200.10.10.120
04:000.10.10.1200.10.10.120
05:000.10.10.1200.10.10.120
06:000.450.450.45200.450.450.4520
07:000.20.20.2140.20.20.214
08:000.190.190.19140.190.190.1914
09:000.190.190.19140.190.190.1914
10:000.150.150.15140.150.150.1514
11:000.20.20.2140.20.20.214
12:000.20.20.2140.20.20.214
13:000.20.20.2140.20.20.214
14:000.20.20.2140.20.20.214
15:000.20.20.2140.20.20.214
16:000.20.20.2140.20.20.214
17:000.170.170.17140.170.170.1714
18:000.150.150.15140.150.150.1514
19:000.150.150.15140.150.150.1514
20:000.150.150.15140.150.150.1514
21:000.170.170.17140.170.170.1714
22:000.20.20.2140.20.20.214
23:001.281.281.28201.281.281.2820