P-5

Ancillary Services Prices, Day Ahead Market

07/31/2009

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)
00:002.592.59024.790.250.25024.79
01:000.250.250280.250.25028
02:000.10.10280.10.1028
03:000.10.10280.10.1028
04:000.10.10280.10.1028
05:000.10.10280.10.1028
06:000.250.250280.250.25028
07:003302833028
08:003.323.320283.323.32028
09:003.713.710283.713.71028
10:003.353.350283.353.35028
11:003.373.370.35253.373.370.3525
12:004.843.380.5284.843.380.528
13:0053.370.52853.370.528
14:0073.370.52873.370.528
15:009.973.470.52870.50.528
16:009.873.370.52870.50.528
17:0053.350.52853.350.528
18:0053.350.52853.350.528
19:003.343.340.5283.343.340.528
20:003.343.340.5283.343.340.528
21:003.373.370.21283.373.370.2128
22:003.363.360283.363.36028
23:003.323.320280.250.25028