P-5

Ancillary Service Prices, Day Ahead Market

12/27/2004

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)
00:000.50.50.5200.50.50.520
01:000.20.20.2200.20.20.220
02:000.20.20.2200.20.20.220
03:000.20.20.2200.20.20.220
04:000.20.20.2200.20.20.220
05:000.840.840.84200.840.840.8420
06:001.750.50.5201.750.50.520
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
16:0030.20.22030.20.220
17:0030.840.842030.840.8420
18:001.990.840.84201.990.840.8420
19:001.990.840.84141.990.840.8414
20:001.990.20.2141.990.20.214
21:001.990.20.2141.990.20.214
22:0030.20.21430.20.214
23:0030.840.842030.840.8420