P-5

Ancillary Service Prices, Day Ahead Market

01/31/2004

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)
00:0050.250.252550.250.2525
01:000.150.150.15250.150.150.1525
02:000.150.150.15200.150.150.1520
03:000.150.150.15200.150.150.1520
04:000.150.150.15200.150.150.1520
05:000.20.20.2250.20.20.225
06:003.250.250.25253.250.250.2525
07:00120.170.1735120.170.1735
08:00120.150.1535120.150.1535
09:00120.190.1935120.190.1935
10:00120.150.1511120.150.1511
11:00120.150.1511120.150.1511
12:003.250.150.15113.250.150.1511
13:003.250.150.15113.250.150.1511
14:003.250.150.15113.250.150.1511
15:003.250.150.15113.250.150.1511
16:003.250.150.15353.250.150.1535
17:00120.150.1535120.150.1535
18:00120.150.1535120.150.1535
19:00120.150.1535120.150.1535
20:00120.150.1525120.150.1525
21:00120.160.1625120.160.1625
22:00120.170.1725120.170.1725
23:003.250.180.18253.250.180.1825