P-5

Ancillary Services Prices, Day Ahead Market

07/26/2007

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)
00:000.170.170.1450.170.170.145
01:000.180.180.1450.180.180.145
02:000.170.170.1450.170.170.145
03:000.170.170.1450.170.170.145
04:000.170.170.1450.170.170.145
05:000.170.170.1450.170.170.145
06:000.140.140.1450.140.140.145
07:000.450.450.1500.450.450.150
08:000.970.970.1500.970.970.150
09:003.073.070.5553.073.070.555
10:004.393.090.5554.393.090.555
11:006.953.070.5556.953.070.555
12:0073.070.55573.070.555
13:008.543.060.55571.520.555
14:0073.060.55573.060.555
15:0073.040.55573.040.555
16:009.543.040.55570.50.555
17:0073.040.55573.040.555
18:0073.050.55573.050.555
19:006.123.050.5556.123.050.555
20:006.453.050.5556.453.050.555
21:003.693.090.5553.693.090.555
22:0073.490.55073.490.550
23:003.093.090.2450.250.250.245