P-5

Ancillary Service Prices, Day Ahead Market

12/19/2004

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)
00:000.30.30.3200.30.30.320
01:000.170.170.17200.170.170.1720
02:000.170.170.17200.170.170.1720
03:000.170.170.17200.170.170.1720
04:000.170.170.17200.170.170.1720
05:000.840.840.5200.50.50.520
06:000.50.50.5200.50.50.520
07:000.20.20.2140.20.20.214
08:000.20.20.2140.20.20.214
09:000.20.20.2140.20.20.214
10:001.750.180.18141.750.180.1814
11:000.20.20.2140.20.20.214
12:000.20.20.2140.20.20.214
13:000.20.20.2140.20.20.214
14:000.20.20.2140.20.20.214
15:000.20.20.2140.20.20.214
16:001.750.180.18141.750.180.1814
17:001.990.20.2201.990.20.220
18:001.990.20.2161.990.20.216
19:001.990.20.2201.990.20.220
20:001.750.180.18141.750.180.1814
21:001.750.20.2141.750.20.214
22:001.750.20.2141.750.20.214
23:000.50.50.5200.50.50.520