P-5

Ancillary Services Prices, Day Ahead Market

05/21/2008

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)
00:000.390.390.25450.250.250.2545
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
06:000.390.390.2598.360.250.250.2598.36
07:0073.890.510073.890.5100
08:007.323.490.54573.170.545
09:0073.390.54573.390.545
10:0073.340.54573.340.545
11:0073.340.54573.340.545
12:0073.340.54573.340.545
13:0073.340.54573.340.545
14:0073.340.54573.340.545
15:0073.350.54573.350.545
16:0073.330.54573.330.545
17:009.883.380.54570.50.545
18:0073.350.54573.350.545
19:0073.350.54573.350.545
20:009.893.393.3947.899.893.393.3947.89
21:0015.373.490.9945.497.490.990.9945.49
22:0070.50.54570.50.545
23:000.450.450.25450.250.250.2545