P-5

Ancillary Service Prices, Day Ahead Market

10/31/2004

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
01:000.450.450.45200.450.450.4520
01:001.451.451.45201.451.451.4520
02:000.450.450.45200.450.450.4520
03:000.450.450.45200.450.450.4520
04:000.450.450.45200.450.450.4520
05:001.261.261.26201.261.261.2620
06:000.840.840.84200.840.840.8420
07:001.750.350.35141.750.350.3514
08:001.990.350.35141.990.350.3514
09:0030.330.331430.330.3314
10:0030.330.331430.330.3314
11:0030.330.331430.330.3314
12:001.990.330.33141.990.330.3314
13:001.990.330.33141.990.330.3314
14:001.990.330.33141.990.330.3314
15:0030.320.321430.320.3214
16:0030.320.321430.320.3214
17:00120.20.214120.20.214
18:00120.20.214120.20.214
19:0030.320.321430.320.3214
20:0030.330.331430.330.3314
21:0030.350.351430.350.3514
22:001.750.360.36141.750.360.3614
23:001.751.41.4201.751.41.420