P-5

Ancillary Service Prices, Day Ahead Market

12/21/2003

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)
00:000.360.360.36200.360.360.3620
01:000.210.210.21200.210.210.2120
02:000.210.210.21200.210.210.2120
03:000.210.210.21200.210.210.2120
04:000.210.210.21200.210.210.2120
05:000.210.210.21200.210.210.2120
06:000.840.840.5200.50.50.520
07:000.20.20.2110.20.20.211
08:001.750.20.2111.750.20.211
09:0030.20.21130.20.211
10:0030.20.21730.20.217
11:0030.20.21730.20.217
12:0030.20.21730.20.217
13:0030.20.21730.20.217
14:0030.20.21730.20.217
15:001.990.20.2171.990.20.217
16:003.250.190.19173.250.190.1917
17:00100.20.217100.20.217
18:003.250.20.2173.250.20.217
19:003.250.20.2203.250.20.220
20:00100.20.220100.20.220
21:00100.20.220100.20.220
22:00100.20.220100.20.220
23:003.250.50.5203.250.50.520