P-5

Ancillary Service Prices, Day Ahead Market

12/21/2004

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)
00:001.750.30.3201.750.30.320
01:000.50.50.5200.50.50.520
02:000.250.250.25200.250.250.2520
03:000.250.250.25200.250.250.2520
04:000.50.50.5200.50.50.520
05:000.50.50.5200.50.50.520
06:001.750.50.5501.750.50.550
07:001.750.20.2201.750.20.220
08:001.750.20.2201.750.20.220
09:001.750.20.2141.750.20.214
10:001.750.20.2141.750.20.214
11:001.750.20.2141.750.20.214
12:001.750.20.2141.750.20.214
13:001.750.20.2141.750.20.214
14:001.750.20.2141.750.20.214
15:001.750.20.2141.750.20.214
16:001.990.190.19201.990.190.1920
17:00120.20.220120.20.220
18:001.990.20.2201.990.20.220
19:001.750.20.2141.750.20.214
20:001.750.180.18141.750.180.1814
21:001.750.20.2141.750.20.214
22:001.990.20.2141.990.20.214
23:001.990.30.3201.990.30.320