P-5

Ancillary Services Prices, Day Ahead Market

02/21/2009

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)
00:003.383.383.3848.133.383.383.3848.13
01:003.373.37246.7522246.75
02:000.250.250.25450.250.250.2545
03:000.250.250.25450.250.250.2545
04:000.250.250.25450.250.250.2545
05:003.373.372.7847.532.782.782.7847.53
06:003.373.370.355.070.30.30.355.07
07:003.583.40.5653.583.40.565
08:0063.3626563.36265
09:009.53.36347.59.53.36347.5
10:009.873.373.3747.879.873.373.3747.87
11:009.53.33347.59.53.33347.5
12:008.53.33246.58.53.33246.5
13:0073.330.54573.330.545
14:0073.330.54573.330.545
15:0073.330.54573.330.545
16:0073.090.584.2873.090.584.28
17:009.883.383.3850.219.883.383.3850.21
18:0014.83.493.4952.814.83.493.4952.8
19:009.93.43.447.99.93.43.447.9
20:009.883.383.3847.889.883.383.3847.88
21:008.53.33246.58.53.33246.5
22:0073.360.54573.360.545
23:003.363.360.3450.30.30.345