P-5

Ancillary Services Prices, Day Ahead Market

12/26/2007

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)
00:000.250.250.2563.620.250.250.2563.62
01:000.20.20.2620.20.20.262
02:000.20.20.261.90.20.20.261.9
03:000.20.20.264.310.20.20.264.31
04:000.20.20.263.920.20.20.263.92
05:000.20.20.282.150.20.20.282.15
06:000.250.250.2582.490.250.250.2582.49
07:009.192.690.55570.50.555
08:009.142.640.510070.50.5100
09:0070.50.55570.50.555
10:0070.50.55570.50.555
11:0070.50.55570.50.555
12:0070.50.55570.50.555
13:0070.50.55570.50.555
14:0070.50.55570.50.555
15:0070.50.55570.50.555
16:0070.50.574.770.50.574.7
17:008.822.252.2587.468.752.252.2587.46
18:008.52282.18.52282.1
19:0070.50.56070.50.560
20:0070.50.56070.50.560
21:0017.90.50.55570.50.555
22:0070.50.55070.50.550
23:000.250.250.25500.250.250.2550