P-5

Ancillary Service Prices, Day Ahead Market

12/20/2003

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)
00:000.380.380.38200.380.380.3820
01:000.330.330.33200.330.330.3320
02:000.330.330.33200.330.330.3320
03:000.330.330.33200.330.330.3320
04:000.330.330.33200.330.330.3320
05:000.390.390.39200.390.390.3920
06:001.750.50.5201.750.50.520
07:001.990.50.5171.990.50.517
08:003.250.450.45173.250.450.4517
09:001.991.11.1171.991.11.117
10:00100.50.511100.50.511
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
17:003.250.380.38173.250.380.3817
18:003.250.380.38173.250.380.3817
19:00100.380.3820100.380.3820
20:00100.340.3420100.340.3420
21:00100.20.220100.20.220
22:003.250.20.2203.250.20.220
23:001.990.50.5201.990.50.520