P-5

Ancillary Service Prices, Day Ahead Market

09/20/2004

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)
00:000.320.320.32200.320.320.3220
01:000.10.10.1200.10.10.120
02:000.10.10.1200.10.10.120
03:000.10.10.1200.10.10.120
04:000.10.10.1200.10.10.120
05:000.10.10.1550.10.10.155
06:000.450.450.45950.450.450.4595
07:000.20.20.2950.20.20.295
08:000.20.20.2550.20.20.255
09:000.20.20.2400.20.20.240
10:000.20.20.2400.20.20.240
11:000.20.20.2140.20.20.214
12:000.20.20.2140.20.20.214
13:000.990.20.2140.990.20.214
14:001.990.20.2141.990.20.214
15:001.990.20.2141.990.20.214
16:001.990.20.2401.990.20.240
17:000.190.190.19400.190.190.1940
18:000.150.150.15400.150.150.1540
19:000.190.190.19550.190.190.1955
20:000.990.150.15550.990.150.1555
21:000.150.150.15550.150.150.1555
22:000.150.150.15400.150.150.1540
23:000.450.450.45200.450.450.4520