P-5

Ancillary Service Prices, Day Ahead Market

12/24/2003

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)
00:000.20.20.2200.20.20.220
01:000.160.160.16200.160.160.1620
02:000.160.160.16200.160.160.1620
03:000.160.160.16200.160.160.1620
04:000.160.160.16200.160.160.1620
05:000.20.20.2200.20.20.220
06:001.750.50.5201.750.50.520
07:001.750.190.19171.750.190.1917
08:001.750.180.18171.750.180.1817
09:001.990.20.2171.990.20.217
10:0030.180.181130.180.1811
11:001.990.190.19111.990.190.1911
12:001.990.190.19111.990.190.1911
13:001.750.190.19111.750.190.1911
14:001.750.190.19111.750.190.1911
15:001.750.190.19111.750.190.1911
16:003.250.150.15173.250.150.1517
17:001.990.20.2111.990.20.211
18:003.250.20.2173.250.20.217
19:0030.150.152030.150.1520
20:001.990.150.15201.990.150.1520
21:001.990.160.16201.990.160.1620
22:003.250.170.17203.250.170.1720
23:003.250.50.5203.250.50.520