P-5

Ancillary Services Prices, Day Ahead Market

05/21/2007

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
01:000.20.20.2450.20.20.245
02:000.20.20.2450.20.20.245
03:000.20.20.2450.20.20.245
04:000.20.20.2450.20.20.245
05:000.250.250.25450.250.250.2545
06:003.493.490.2553.580.250.250.2553.58
07:0074.990.55074.990.550
08:0074.990.55074.990.550
09:0012.716.210.55070.50.550
10:0010.164.990.55071.830.550
11:0011.464.990.55070.530.550
12:0010.794.990.55071.20.550
13:0011.294.990.55070.70.550
14:0011.494.990.55070.50.550
15:009.563.060.55070.50.550
16:008.823.050.55071.230.550
17:007.493.050.55072.560.550
18:0073.050.55073.050.550
19:008.473.050.55071.580.550
20:009.563.060.55070.50.550
21:0073.490.54773.490.547
22:0073.490.54773.490.547
23:000.250.250.25470.250.250.2547