P-5

Ancillary Services Prices, Day Ahead Market

05/20/2007

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
01:000.250.250.25450.250.250.2545
02:000.250.250.25450.250.250.2545
03:000.250.250.25450.250.250.2545
04:000.250.250.25450.250.250.2545
05:000.250.250.25450.250.250.2545
06:003.893.890.25450.250.250.2545
07:0073.890.54573.890.545
08:0072.540.54572.540.545
09:0073.050.54573.050.545
10:009.563.060.54570.50.545
11:009.873.370.54570.50.545
12:009.563.060.54570.50.545
13:009.563.060.54570.50.545
14:008.123.040.54571.920.545
15:0073.040.54573.040.545
16:008.463.040.54571.580.545
17:0073.040.54573.040.545
18:0073.040.54573.040.545
19:0073.040.54573.040.545
20:009.563.060.54570.50.545
21:0073.050.54573.050.545
22:0073.490.54573.490.545
23:003.493.490.25450.250.250.2545