P-5

Ancillary Services Prices, Day Ahead Market

05/25/2009

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)
00:003.363.360.25320.250.250.2532
01:003.373.370.25320.250.250.2532
02:000.250.250.25320.250.250.2532
03:000.20.20.2320.20.20.232
04:000.20.20.2320.20.20.232
05:000.20.20.2320.20.20.232
06:003.373.370.25320.250.250.2532
07:0053.890.535.7853.890.535.78
08:0053.410.542.9353.410.542.93
09:0063.460.53263.460.532
10:006.253.390.5326.253.390.532
11:0073.390.53273.390.532
12:009.13.390.53271.290.532
13:009.893.390.53270.50.532
14:009.653.390.53270.740.532
15:008.893.390.53271.50.532
16:009.893.390.53270.50.532
17:009.873.370.53270.50.532
18:0073.370.53273.370.532
19:0073.370.53273.370.532
20:0073.370.53273.370.532
21:006.53.390.5326.53.390.532
22:0053.420.53253.420.532
23:003.383.380.25320.250.250.2532