Page Ref: P-5

Ancillary Service Prices
Day Ahead Market

05/31/2001

Time Stamp 10 Min Spinning Reserve ($/MWHr) 10 Min Non-Synchronous Reserve ($/MWHr) 30 Min Operating Reserve ($/MWHr) Regulation ($/MWHr)
00:00 0.83 0.68 0.27 50.00
01:00 0.83 0.68 0.27 50.00
02:00 0.83 0.68 0.27 8.55
03:00 0.83 0.68 0.27 8.55
04:00 0.83 0.68 0.27 8.55
05:00 0.83 0.68 0.27 8.55
06:00 2.51 2.51 1.00 8.55
07:00 2.45 2.45 1.58 5.90
08:00 2.44 2.44 1.58 5.90
09:00 2.45 2.45 1.58 5.90
10:00 2.44 2.44 1.23 5.90
11:00 2.43 2.43 1.40 5.90
12:00 2.44 2.44 1.23 5.90
13:00 2.44 2.44 1.40 5.90
14:00 2.44 2.44 1.40 5.90
15:00 2.44 2.44 1.23 5.90
16:00 2.44 2.44 1.04 5.90
17:00 2.44 2.44 1.22 7.95
18:00 2.44 2.44 1.22 7.95
19:00 2.45 2.45 1.20 7.95
20:00 2.45 2.45 1.02 5.90
21:00 2.45 2.45 1.40 5.90
22:00 2.44 2.44 1.62 50.00
23:00 2.43 2.43 0.27 50.00