P-5

Ancillary Services Prices, Day Ahead Market

12/16/2007

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)
00:000.30.30.360.240.30.30.360.24
01:000.30.30.363.120.30.30.363.12
02:000.250.250.2584.020.250.250.2584.02
03:000.250.250.2586.690.250.250.2586.69
04:000.250.250.2586.980.250.250.2586.98
05:000.250.250.2582.930.250.250.2582.93
06:003.593.590.3500.30.30.350
07:0070.840.58570.840.585
08:0070.50.58570.50.585
09:00740.585740.585
10:007.333.890.58573.560.585
11:0073.890.58573.890.585
12:0073.890.58573.890.585
13:0073.890.58573.890.585
14:0073.890.58573.890.585
15:0073.890.58573.890.585
16:0010.524.020.510070.50.5100
17:0035.534.033.54103.0410.043.543.54103.04
18:0035.534.033.4102.99.93.43.4102.9
19:0028.644.022.56102.069.062.562.56102.06
20:0012.564.020.510070.50.5100
21:0010.514.010.58570.50.585
22:0070.50.54570.50.545
23:002.642.640.3450.30.30.345