Page Ref: P-5

Ancillary Service Prices
Day Ahead Market

12/31/1999

Time Stamp 10 Min Spinning Reserve ($/MWHr) 10 Min Non-Synchronous Reserve ($/MWHr) 30 Min Operating Reserve ($/MWHr) Regulation ($/MWHr)
00:00 1.09 1.09 0.53 500.00
01:00 1.09 1.09 0.51 500.00
02:00 1.09 1.09 0.51 25.00
03:00 1.09 1.09 0.51 24.00
04:00 1.09 1.09 0.51 24.00
05:00 1.14 1.14 0.51 300.00
06:00 1.17 1.17 0.51 300.00
07:00 1.09 1.09 0.51 50.00
08:00 1.09 1.09 0.49 50.00
09:00 1.09 1.09 0.51 50.00
10:00 1.09 1.09 0.51 30.00
11:00 1.09 1.09 0.51 25.00
12:00 1.09 1.09 0.51 25.00
13:00 1.09 1.09 0.51 25.00
14:00 1.09 1.09 0.51 25.00
15:00 1.09 1.09 0.51 25.00
16:00 1.09 1.09 0.51 50.00
17:00 1.09 1.09 0.53 50.00
18:00 1.09 1.09 0.53 50.00
19:00 1.09 1.09 0.53 50.00
20:00 1.09 1.09 0.53 50.00
21:00 1.10 1.10 0.55 37.69
22:00 30.00 1.19 0.94 300.00
23:00 30.00 1.42 0.85 300.00