P-5

Ancillary Service Prices, Day Ahead Market

10/27/2004

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)
00:000.450.450.45200.450.450.4520
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
05:000.450.450.45500.450.450.4550
06:0040.450.457540.450.4575
07:0040.20.27540.20.275
08:0040.20.27540.20.275
09:0040.20.27540.20.275
10:0040.190.197540.190.1975
11:0040.20.21440.20.214
12:0040.170.171440.170.1714
13:0040.180.181440.180.1814
14:0040.160.161440.160.1614
15:0040.160.161440.160.1614
16:0040.150.157540.150.1575
17:0040.170.177540.170.1775
18:00120.180.1817.5120.180.1817.5
19:0040.180.1817.540.180.1817.5
20:0040.190.197540.190.1975
21:0040.20.27540.20.275
22:0030.20.25030.20.250
23:000.840.840.84200.840.840.8420