P-5

Ancillary Service Prices, Day Ahead Market

03/31/2004

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)
00:001112511125
01:001.251.251.25251.251.251.2525
02:001.11.11.1201.11.11.120
03:001.11.11.1201.11.11.120
04:001.11.11.1201.11.11.120
05:003.251.41.4203.251.41.420
06:003.251.281.28203.251.281.2820
07:003.250.20.2353.250.20.235
08:003.250.20.2123.250.20.212
09:00120.20.235120.20.235
10:00120.20.212120.20.212
11:00120.20.212120.20.212
12:00120.20.212120.20.212
13:003.250.20.2123.250.20.212
14:003.250.20.2123.250.20.212
15:003.250.20.2123.250.20.212
16:003.250.190.19123.250.190.1912
17:00120.190.1912120.190.1912
18:00120.20.212120.20.212
19:003.250.20.2123.250.20.212
20:003.250.20.2253.250.20.225
21:00120.20.225120.20.225
22:003.250.20.2253.250.20.225
23:003.250.20.2203.250.20.220