P-5

Ancillary Services Prices, Day Ahead Market

04/26/2010

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)
00:001.831.680.1280.250.10.128
01:001.831.680.1280.250.10.128
02:000.240.240.1280.240.240.128
03:000.240.240.1280.240.240.128
04:000.240.240.1280.240.240.128
05:001.831.680.1280.250.10.128
06:001.831.680.1280.250.10.128
07:0071.670.23571.670.235
08:009.541.720.122.0370.10.122.03
09:009.521.720.22070.20.220
10:0010.111.720.22070.20.220
11:0013.441.720.22070.20.220
12:0010.161.720.22070.20.220
13:0012.771.720.22070.20.220
14:0011.811.720.12070.10.120
15:0010.011.690.120.1170.10.120.11
16:009.781.670.121.6170.10.121.61
17:0011.291.670.125.9670.10.125.96
18:008.451.630.183570.180.1835
19:008.431.630.23570.20.235
20:008.131.330.220.870.20.220.8
21:0070.510.23570.510.235
22:007.310.510.23570.20.235
23:000.590.440.1280.250.10.128