P-5

Ancillary Services Prices, Day Ahead Market

12/15/2008

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)
00:000.840.840.25450.250.250.2545
01:000.840.840.25450.250.250.2545
02:000.250.250.25450.250.250.2545
03:000.250.250.25450.250.250.2545
04:000.250.250.25450.250.250.2545
05:000.840.840.25450.250.250.2545
06:002.352.350.25450.250.250.2545
07:0072.380.54572.380.545
08:007.622.361.1245.627.622.361.1245.62
09:0072.360.54572.360.545
10:0072.350.54572.350.545
11:008.862.360.54570.50.545
12:008.852.350.54570.50.545
13:0072.350.54572.350.545
14:0072.350.54572.350.545
15:0072.350.54572.350.545
16:007.622.331.1245.627.622.331.1245.62
17:008.842.342.3446.848.842.342.3446.84
18:007.972.331.4745.977.972.331.4745.97
19:007.732.331.2345.737.732.331.2345.73
20:008.872.372.3746.878.872.372.3746.87
21:007.622.351.1245.627.622.351.1245.62
22:002.362.360.5452.362.360.545
23:002.352.350.3450.30.30.345