P-5

Ancillary Service Prices, Day Ahead Market

12/16/2003

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)
00:001.851.850.5200.50.50.520
01:000.10.10.1200.10.10.120
02:000.10.10.1200.10.10.120
03:000.10.10.1200.10.10.120
04:000.10.10.1200.10.10.120
05:002.492.490.5200.50.50.520
06:003.251.850.5200.50.50.520
07:003.250.20.2173.250.20.217
08:003.250.20.2173.250.20.217
09:003.250.20.2173.250.20.217
10:003.250.20.2113.250.20.211
11:003.250.150.15113.250.150.1511
12:001.990.150.15111.990.150.1511
13:001.990.150.15111.990.150.1511
14:001.750.150.15111.750.150.1511
15:003.250.150.15113.250.150.1511
16:003.250.150.15173.250.150.1517
17:003.250.20.2173.250.20.217
18:003.250.20.2173.250.20.217
19:001.750.20.2111.750.20.211
20:001.990.20.2111.990.20.211
21:003.250.990.99203.250.990.9920
22:003.250.20.2203.250.20.220
23:001.851.850.5200.50.50.520