P-5

Ancillary Service Prices, Day Ahead Market

12/31/2004

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)
00:000.840.840.84200.840.840.8420
01:000.840.840.84200.840.840.8420
02:000.840.840.84200.840.840.8420
03:000.840.840.84200.840.840.8420
04:000.840.840.84200.840.840.8420
05:000.990.990.99500.990.990.9950
06:0060.990.995060.990.9950
07:0030.380.387530.380.3875
08:0030.370.379930.370.3799
09:0060.350.356560.350.3565
10:00120.330.3375120.330.3375
11:0060.340.3417.4960.340.3417.49
12:0060.340.341460.340.3414
13:0030.350.351430.350.3514
14:0030.350.351430.350.3514
15:0060.340.341460.340.3414
16:00120.340.3475120.340.3475
17:00120.450.4535120.450.4535
18:00120.450.4535120.450.4535
19:0060.450.453560.450.4535
20:0060.340.347560.340.3475
21:0060.340.347560.340.3475
22:0060.350.356560.350.3565
23:0030.990.992030.990.9920