P-5

Ancillary Services Prices, Day Ahead Market

12/18/2007

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)
00:000.250.250.25450.250.250.2545
01:000.250.250.25450.250.250.2545
02:000.20.20.2450.20.20.245
03:000.20.20.2450.20.20.245
04:000.20.20.2450.20.20.245
05:000.250.250.25450.250.250.2545
06:003.093.093.0952.843.093.093.0952.84
07:000.50.50.52500.50.50.5250
08:000.50.50.52500.50.50.5250
09:0074.020.512574.020.5125
10:0074.010.512574.010.5125
11:005.664.010.5755.664.010.575
12:003.893.890.5753.893.890.575
13:003.893.890.5753.893.890.575
14:003.493.490.5753.493.490.575
15:003.893.890.586.833.893.890.586.83
16:006.954.013.699.056.954.013.699.05
17:0029.494.044119.371244119.37
18:0016.874.044118.711244118.71
19:0012.034.0341001244100
20:006.954.01495.476.954.01495.47
21:0074.010.57074.010.570
22:000.50.50.5500.50.50.550
23:000.250.250.25500.250.250.2550