P-5

Ancillary Services Prices, Day Ahead Market

09/21/2005

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)
00:00330.246.910.250.250.246.91
01:000.250.250.247.20.250.250.247.2
02:000.20.20.2430.20.20.243
03:000.20.20.2430.20.20.243
04:000.20.20.2430.20.20.243
05:000.250.250.256.810.250.250.256.81
06:00110.248.570.250.250.248.57
07:00103.50.559.5170.50.559.51
08:0070.50.57570.50.575
09:009.593.090.543.7970.50.543.79
10:0015.312.590.550.1870.50.550.18
11:0015.524.290.9846.487.480.980.9846.48
12:0018.59100.9845.927.480.980.9845.92
13:0015.771.760.9938.82150.990.9938.82
14:0017.623.610.9940.67150.990.9940.67
15:0024.874.590.9948.9920.180.990.9948.99
16:0036.950.990.9981.9320.30.990.9981.93
17:0029.650.990.997516.760.990.9975
18:0015.860.50.57570.50.575
19:0027.440.980.9865.617.480.980.9865.61
20:0022.030.980.9858.957.480.980.9858.95
21:0017.843.890.548.5870.50.548.58
22:0010.794.290.538.0570.50.538.05
23:00330.3430.30.30.343