P-5

Ancillary Services Prices, Day Ahead Market

06/21/2008

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)
00:000.370.370.1450.250.250.145
01:000.390.390.1450.250.250.145
02:000.390.390.160.30.250.250.160.3
03:000.390.390.170.390.250.250.170.39
04:000.390.390.171.370.250.250.171.37
05:000.390.390.174.650.250.250.174.65
06:000.370.370.11500.250.250.1150
07:003.493.490.11503.493.490.1150
08:006.513.490.1606.513.490.160
09:0074.20.56074.20.560
10:0073.890.56073.890.560
11:007.43.890.56073.490.560
12:0073.370.56073.370.560
13:0073.370.56073.370.560
14:0010.894.390.56070.50.560
15:0015.24.80.56070.50.560
16:0032.414.80.561.0170.50.561.01
17:0010.794.290.56070.50.560
18:009.863.360.56070.50.560
19:009.863.360.56070.50.560
20:009.953.450.56070.50.560
21:0010.794.290.56070.50.560
22:0012.034.390.55070.50.550
23:003.093.090.25450.250.250.2545