P-5

Ancillary Service Prices, Day Ahead Market

12/18/2003

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)
00:000.450.450.45200.450.450.4520
01:000.250.250.25200.250.250.2520
02:000.250.250.25200.250.250.2520
03:000.250.250.25200.250.250.2520
04:000.250.250.25200.250.250.2520
05:001.851.850.5200.50.50.520
06:003.2510.5201.990.50.520
07:003.250.20.2173.250.20.217
08:003.250.20.2173.250.20.217
09:001.990.330.33171.990.330.3317
10:001.990.320.32111.990.320.3211
11:001.990.20.2111.990.20.211
12:001.990.20.2111.990.20.211
13:001.990.20.2111.990.20.211
14:001.990.20.2111.990.20.211
15:003.250.20.2113.250.20.211
16:003.250.20.2173.250.20.217
17:003.250.370.37173.250.370.3717
18:003.250.360.36173.250.360.3617
19:003.250.360.36203.250.360.3620
20:003.250.360.36113.250.360.3611
21:003.250.990.99203.250.990.9920
22:003.250.20.2203.250.20.220
23:003.2510.5201.990.50.520