P-5

Ancillary Service Prices, Day Ahead Market

12/23/2003

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
05:000.450.450.45200.450.450.4520
06:001.750.390.39201.750.390.3920
07:0030.20.21730.20.217
08:003.250.20.2173.250.20.217
09:0030.20.21730.20.217
10:0030.20.21130.20.211
11:0030.20.21130.20.211
12:0030.20.21130.20.211
13:0030.20.21130.20.211
14:0030.20.21130.20.211
15:001.750.20.2111.750.20.211
16:003.250.20.2113.250.20.211
17:003.250.20.2173.250.20.217
18:001.990.20.2111.990.20.211
19:003.250.20.2113.250.20.211
20:003.250.20.2203.250.20.220
21:003.250.450.45203.250.450.4520
22:003.250.20.2203.250.20.220
23:0030.450.452030.450.4520