P-5

Ancillary Services Prices, Day Ahead Market

12/21/2007

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)
00:000.250.250.2545.540.250.250.2545.54
01:000.20.20.247.380.20.20.247.38
02:000.20.20.2450.20.20.245
03:000.20.20.2450.20.20.245
04:000.20.20.253.670.20.20.253.67
05:000.250.250.2556.640.250.250.2556.64
06:000.250.250.25500.250.250.2550
07:002.320.840.5702.320.840.570
08:004.870.50.5704.870.50.570
09:0074.030.57074.030.570
10:0074.030.57074.030.570
11:006.264.030.5706.264.030.570
12:005.794.030.5705.794.030.570
13:0074.030.57074.030.570
14:004.024.020.5704.024.020.570
15:004.264.020.5704.264.020.570
16:0074.020.58574.020.585
17:0010.524.02397.59.53397.5
18:0010.524.020.59570.50.595
19:0074.020.58574.020.585
20:0073.090.58573.090.585
21:006.83.490.5706.83.490.570
22:000.50.50.5500.50.50.550
23:000.250.250.25500.250.250.2550