P-5

Ancillary Services Prices, Day Ahead Market

12/30/2007

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)
00:000.30.30.3450.30.30.345
01:000.20.20.2450.20.20.245
02:000.20.20.2450.20.20.245
03:000.20.20.2450.20.20.245
04:000.20.20.2450.20.20.245
05:000.20.20.2450.20.20.245
06:000.20.20.2500.20.20.250
07:0070.50.57070.50.570
08:0070.50.56070.50.560
09:0073.040.56073.040.560
10:0073.030.56073.030.560
11:0073.030.56073.030.560
12:0073.030.56073.030.560
13:0073.030.56073.030.560
14:0073.030.56073.030.560
15:008.033.030.560720.560
16:009.543.043.0462.549.543.043.0462.54
17:0010.053.553.558510.053.553.5585
18:0010.083.583.588510.083.583.5885
19:009.573.073.07859.573.073.0785
20:009.573.073.07859.573.073.0785
21:009.533.032.4966.998.992.492.4966.99
22:0070.50.55070.50.550
23:000.250.250.25450.250.250.2545