P-5

Ancillary Service Prices, Day Ahead Market

10/28/2004

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)
00:000.390.390.39200.390.390.3920
01:000.150.150.15200.150.150.1520
02:000.150.150.15200.150.150.1520
03:000.150.150.15200.150.150.1520
04:000.150.150.15200.150.150.1520
05:001.281.281.28501.281.281.2850
06:001.271.271.27991.271.271.2799
07:0040.330.337540.330.3375
08:0040.20.27540.20.275
09:0040.20.27540.20.275
10:0040.20.25040.20.250
11:0040.20.21440.20.214
12:0040.160.161440.160.1614
13:0040.160.161440.160.1614
14:0040.160.161440.160.1614
15:0040.160.161440.160.1614
16:0040.150.157540.150.1575
17:0040.180.187540.180.1875
18:0040.20.21640.20.216
19:0040.20.21640.20.216
20:0040.20.27540.20.275
21:0030.180.185030.180.1850
22:000.20.20.2500.20.20.250
23:000.840.840.84200.840.840.8420