P-5

Ancillary Services Prices, Day Ahead Market

12/31/2008

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)
00:002.332.330.3450.30.30.345
01:002.332.330.3450.30.30.345
02:002.332.330.3450.30.30.345
03:002.332.330.3450.30.30.345
04:002.332.330.3450.30.30.345
05:002.332.330.3450.30.30.345
06:002.342.340.355.360.30.30.355.36
07:0072.370.54572.370.545
08:007.492.360.9945.497.492.360.9945.49
09:008.872.371.1245.627.621.121.1245.62
10:008.862.361.1245.627.621.121.1245.62
11:008.872.370.54570.50.545
12:008.862.360.54570.50.545
13:008.872.370.54570.50.545
14:007.532.350.54571.820.545
15:0072.350.54572.350.545
16:0072.320.54572.320.545
17:0010.842.372.3746.878.872.372.3746.87
18:008.872.372.3746.878.872.372.3746.87
19:007.992.321.4945.997.992.321.4945.99
20:0072.320.54572.320.545
21:0072.350.54572.350.545
22:006.282.360.5456.282.360.545
23:002.332.330.3450.30.30.345