P-5

Ancillary Service Prices, Day Ahead Market

09/18/2004

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)
00:000.390.390.39200.390.390.3920
01:000.330.330.33200.330.330.3320
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
06:000.380.380.38950.380.380.3895
07:000.20.20.2950.20.20.295
08:000.20.20.2950.20.20.295
09:000.20.20.2550.20.20.255
10:000.170.170.17550.170.170.1755
11:001.990.20.2141.990.20.214
12:001.990.20.2141.990.20.214
13:000.20.20.2140.20.20.214
14:000.20.20.2140.20.20.214
15:000.990.20.2140.990.20.214
16:000.990.170.17550.990.170.1755
17:000.150.150.15550.150.150.1555
18:000.150.150.15550.150.150.1555
19:000.150.150.15550.150.150.1555
20:000.150.150.15550.150.150.1555
21:000.150.150.15550.150.150.1555
22:000.150.150.15400.150.150.1540
23:000.840.840.84200.840.840.8420