P-5

Ancillary Services Prices, Day Ahead Market

12/29/2007

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)
00:000.250.250.25450.250.250.2545
01:000.20.20.2450.20.20.245
02:000.20.20.2450.20.20.245
03:000.20.20.2450.20.20.245
04:000.20.20.2450.20.20.245
05:000.20.20.2450.20.20.245
06:000.20.20.284.760.20.20.284.76
07:0070.50.594.3670.50.594.36
08:0070.50.590.4470.50.590.44
09:0074.290.56074.290.560
10:0074.20.56074.20.560
11:0010.794.290.56070.50.560
12:008.224.20.56072.980.560
13:0074.20.56074.20.560
14:0074.20.56074.20.560
15:0074.20.56074.20.560
16:0010.74.22.02858.522.022.0285
17:0010.74.23859.53385
18:0010.74.23859.53385
19:0010.74.23859.53385
20:0010.794.292.58592.52.585
21:0010.24.20.565710.565
22:0070.50.55070.50.550
23:000.250.250.25450.250.250.2545