P-5

Ancillary Services Prices, Day Ahead Market

12/25/2007

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)
00:000.250.250.2551.940.250.250.2551.94
01:000.20.20.254.550.20.20.254.55
02:000.20.20.252.370.20.20.252.37
03:000.20.20.2630.20.20.263
04:000.20.20.264.110.20.20.264.11
05:000.250.250.2598.260.250.250.2598.26
06:000.250.250.252500.250.250.25250
07:0070.50.525070.50.5250
08:0070.50.525070.50.5250
09:006.340.50.51006.340.50.5100
10:0070.50.510070.50.5100
11:0070.50.56070.50.560
12:0070.50.56070.50.560
13:0070.50.56070.50.560
14:000.50.50.5600.50.50.560
15:002.550.50.5602.550.50.560
16:0070.50.577.8570.50.577.85
17:0070.50.578.1970.50.578.19
18:008.950.50.57870.50.578
19:0070.50.576.0570.50.576.05
20:0070.50.577.9570.50.577.95
21:0070.50.56570.50.565
22:003.350.50.5503.350.50.550
23:000.250.250.25450.250.250.2545