P-5

Ancillary Services Prices, Day Ahead Market

06/18/2008

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)
00:003.793.790.161.60.250.250.161.6
01:003.593.590.180.310.250.250.180.31
02:003.593.590.186.920.250.250.186.92
03:000.250.250.186.70.250.250.186.7
04:000.250.250.186.010.250.250.186.01
05:003.593.590.178.760.250.250.178.76
06:003.793.790.12500.250.250.1250
07:0074.390.115074.390.1150
08:0074.390.5165.1774.390.5165.17
09:0011.294.790.56070.50.560
10:0010.864.590.57070.730.570
11:0010.864.590.57070.730.570
12:0010.934.590.57070.660.570
13:0011.084.590.57070.510.570
14:0011.094.590.57070.50.570
15:0016.5100.57070.50.570
16:0016.5100.57070.50.570
17:0016.5100.57070.50.570
18:0010.334.590.510071.260.5100
19:008.354.590.59073.240.590
20:0011.494.990.5131.2570.50.5131.25
21:0016.5100.5137.6370.50.5137.63
22:0010.894.390.55070.50.550
23:004.394.390.2554.190.250.250.2554.19