P-5

Ancillary Services Prices, Day Ahead Market

04/15/2008

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)
00:000.340.340.25450.250.250.2545
01:000.250.250.25450.250.250.2545
02:000.250.250.25450.250.250.2545
03:000.250.250.25450.250.250.2545
04:000.250.250.25450.250.250.2545
05:002.592.590.25450.250.250.2545
06:0016.413.090.25670.250.250.2567
07:00100.840.583.570.50.583.5
08:00100.840.841007.340.840.84100
09:009.743.243.2452.749.743.243.2452.74
10:009.733.233.2352.739.733.233.2352.73
11:009.713.210.55070.50.550
12:0034.583.240.55070.50.550
13:0033.693.240.55070.50.550
14:00283.240.55070.50.550
15:0033.853.230.55070.50.550
16:0034.743.240.55070.50.550
17:0034.733.230.55070.50.550
18:0026.563.230.55070.50.550
19:009.673.170.55070.50.550
20:009.833.333.3352.839.833.333.3352.83
21:0034.833.333.3352.839.833.333.3352.83
22:0023.20.50.55070.50.550
23:008.790.330.3450.30.30.345