P-5

Ancillary Services Prices, Day Ahead Market

02/28/2009

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)
00:003.093.090.25450.250.250.2545
01:003.333.330.25450.250.250.2545
02:000.250.250.25450.250.250.2545
03:000.250.250.25450.250.250.2545
04:000.250.250.25450.250.250.2545
05:003.363.360.25450.250.250.2545
06:003.363.360.25450.250.250.2545
07:003.383.380.5453.383.380.545
08:003.723.370.548.53.723.370.548.5
09:005.913.370.5475.913.370.547
10:009.863.362478.52247
11:009.863.361.0145.517.511.011.0145.51
12:0073.360.54573.360.545
13:005.663.360.5455.663.360.545
14:004.783.360.5454.783.360.545
15:003.333.330.5453.333.330.545
16:003.093.090.545.393.093.090.545.39
17:009.873.371.76478.261.761.7647
18:00163.45252.5514.552252.55
19:009.873.372.3446.848.842.342.3446.84
20:009.863.362.11478.612.112.1147
21:008.53.362478.53.36247
22:0073.370.54773.370.547
23:003.333.330.25450.250.250.2545