P-5

Ancillary Services Prices, Day Ahead Market

12/19/2007

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)
00:000.20.20.2450.20.20.245
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
05:000.210.210.21450.210.210.2145
06:000.250.250.25500.250.250.2550
07:000.50.50.5900.50.50.590
08:000.50.50.5900.50.50.590
09:004.014.010.5904.014.010.590
10:00440.590440.590
11:00440.590440.590
12:000.840.840.5900.840.840.590
13:000.950.950.5900.950.950.590
14:000.840.840.5900.840.840.590
15:000.990.990.5900.990.990.590
16:006.254.010.51156.254.010.5115
17:0010.544.043117.59.533117.5
18:0010.544.043117.59.533117.5
19:0074.010.511574.010.5115
20:005.894.010.51155.894.010.5115
21:004.024.020.5904.024.020.590
22:000.50.50.5800.50.50.580
23:000.250.250.25700.250.250.2570