P-5

Ancillary Service Prices, Day Ahead Market

12/23/2004

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
01:000.280.280.28200.280.280.2820
02:000.180.180.18200.180.180.1820
03:000.180.180.18200.180.180.1820
04:000.280.280.28200.280.280.2820
05:000.840.840.84200.840.840.8420
06:001.750.50.5201.750.50.520
07:001.750.20.217.491.750.20.217.49
08:001.750.20.217.491.750.20.217.49
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
13:001.750.190.19141.750.190.1914
14:001.750.190.19141.750.190.1914
15:001.750.190.19141.750.190.1914
16:0060.190.192060.190.1920
17:00120.20.235120.20.235
18:0060.20.22060.20.220
19:0060.20.21460.20.214
20:001.750.20.2141.750.20.214
21:001.750.20.2141.750.20.214
22:001.750.20.2141.750.20.214
23:000.50.50.5200.50.50.520