P-5

Ancillary Services Prices, Day Ahead Market

04/30/2008

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)
00:000.350.350.3450.30.30.345
01:000.250.250.25450.250.250.2545
02:000.250.250.25450.250.250.2545
03:000.250.250.25450.250.250.2545
04:000.250.250.25450.250.250.2545
05:000.360.360.3450.30.30.345
06:0019.833.490.33000.30.30.3300
07:00373.093.09300123.093.09300
08:00373.093.09300123.093.09300
09:00453.493.49519.913.43.495
10:00123.333.3355123.333.3355
11:0011.343.43.454.3411.343.43.454.34
12:009.93.43.452.99.93.43.452.9
13:009.93.43.452.99.93.43.452.9
14:009.733.233.2352.739.733.233.2352.73
15:009.723.223.2252.729.723.223.2252.72
16:00373.333.3355123.333.3355
17:0037.313.31355123355
18:00373.243.2455123.243.2455
19:009.713.21352.59.53352.5
20:009.733.233.2352.739.733.233.2352.73
21:0034.733.23352.59.53352.5
22:0034.142.640.55070.50.550
23:005.253.090.3450.30.30.345