P-5

Ancillary Services Prices, Day Ahead Market

12/31/2011

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)
00:003.553.390.0960.250.090.096
01:003.553.390.095.50.250.090.095.5
02:003.553.390.095.50.250.090.095.5
03:003.553.390.0960.250.090.096
04:003.553.390.0960.250.090.096
05:003.553.390.097.50.250.090.097.5
06:003.513.350.096.50.250.090.096.5
07:003.773.320.096.50.540.090.096.5
08:002.292.290.096.250.090.090.096.25
09:003.323.320.095.750.090.090.095.75
10:004.973.320.095.751.740.090.095.75
11:004.013.320.095.750.780.090.095.75
12:002.352.350.095.750.090.090.095.75
13:001.861.860.095.750.090.090.095.75
14:001.861.860.095.750.090.090.095.75
15:000.810.810.095.950.090.090.095.95
16:005.243.330.092020.090.0920
17:0011.544.630.092070.090.0920
18:009.063.350.09205.80.090.0920
19:006.23.350.0992.940.090.099
20:005.253.340.09620.090.096
21:004.663.330.0961.420.090.096
22:003.323.320.094.50.090.090.094.5
23:001.81.80.14.50.10.10.14.5