P-5

Ancillary Services Prices, Day Ahead Market

12/16/2008

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)
00:002.352.350.3450.30.30.345
01:000.30.30.3450.30.30.345
02:000.30.30.3450.30.30.345
03:000.30.30.3450.30.30.345
04:000.30.30.3450.30.30.345
05:002.362.360.3450.30.30.345
06:002.332.330.3450.30.30.345
07:0072.380.54572.380.545
08:008.812.362.3146.818.812.362.3146.81
09:008.892.391.7146.218.211.711.7146.21
10:008.872.371.4745.977.971.471.4745.97
11:008.872.371.2345.737.731.231.2345.73
12:008.862.360.54570.50.545
13:0072.350.54572.350.545
14:0072.350.54572.350.545
15:0072.350.54572.350.545
16:008.212.321.7146.218.212.321.7146.21
17:008.842.342.3446.848.842.342.3446.84
18:007.622.321.1245.627.622.321.1245.62
19:006.952.320.5456.952.320.545
20:007.732.341.2345.737.732.341.2345.73
21:0072.350.54572.350.545
22:003.072.360.5453.072.360.545
23:000.250.250.25450.250.250.2545