P-5

Ancillary Services Prices, Day Ahead Market

08/30/2007

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)
00:000.250.250.1450.250.250.145
01:000.180.180.1450.180.180.145
02:000.180.180.1450.180.180.145
03:000.180.180.1450.180.180.145
04:000.180.180.1450.180.180.145
05:000.180.180.1450.180.180.145
06:000.250.250.1450.250.250.145
07:000.840.840.1500.840.840.150
08:000.840.840.17500.840.840.1750
09:003.063.060.5553.063.060.555
10:004.893.060.5554.893.060.555
11:0073.050.55573.050.555
12:007.193.050.541.5972.860.541.59
13:009.183.060.544.1870.880.544.18
14:009.553.050.544.5570.50.544.55
15:009.553.050.547.6270.50.547.62
16:009.533.030.56070.50.560
17:009.533.030.56070.50.560
18:007.183.040.55572.860.555
19:006.953.040.5556.953.040.555
20:006.953.040.5556.953.040.555
21:0073.060.55573.060.555
22:003.23.20.5503.23.20.550
23:000.840.840.25420.250.250.2542