P-5

Ancillary Service Prices, Day Ahead Market

01/31/2003

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)
00:001.251.251.25451.251.251.2545
01:001.221.221.22451.221.221.2245
02:001.221.221.22121.221.221.2212
03:001.221.221.22121.221.221.2212
04:001.221.221.22121.221.221.2212
05:001.251.251.25221.251.251.2522
06:002.251.41.4222.251.41.422
07:00131.271.2722131.271.2722
08:00131.251.2523131.251.2523
09:00141.271.2723141.271.2723
10:00141.251.257.5141.251.257.5
11:00141.251.257.5141.251.257.5
12:00141.251.257.5141.251.257.5
13:00141.261.267.5141.261.267.5
14:00141.251.257.5141.251.257.5
15:00141.251.257.5141.251.257.5
16:00130.680.6823130.680.6823
17:00130.680.6822130.680.6822
18:00130.680.6822130.680.6822
19:004.250.990.99224.250.990.9922
20:004.250.990.99224.250.990.9922
21:00141.251.2523141.251.2523
22:0031.41.49531.41.495
23:0031.41.44531.41.445