P-5

Ancillary Services Prices, Day Ahead Market

03/31/2007

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
01:000.20.20.2450.20.20.245
02:000.20.20.2450.20.20.245
03:000.20.20.2450.20.20.245
04:000.20.20.2450.20.20.245
05:000.250.250.25450.250.250.2545
06:002.642.640.2564.10.250.250.2564.1
07:0073.090.581.9473.090.581.94
08:00103.50.582.570.50.582.5
09:00103.50.55570.50.555
10:009.643.140.55570.50.555
11:009.593.090.55570.50.555
12:009.543.040.55570.50.555
13:009.543.040.55570.50.555
14:009.423.030.55570.610.555
15:008.463.030.55571.570.555
16:009.153.020.59570.870.595
17:009.533.030.59570.50.595
18:009.533.030.59570.50.595
19:00103.490.9955.497.490.990.9955.49
20:00103.49256.58.52256.5
21:0011.833.490.56070.50.560
22:0015.143.890.55570.50.555
23:003.893.890.3550.30.30.355