P-5

Ancillary Services Prices, Day Ahead Market

05/23/2009

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)
00:003.393.390.25320.250.250.2532
01:003.393.390.25320.250.250.2532
02:000.250.250.25320.250.250.2532
03:000.250.250.25320.250.250.2532
04:000.250.250.25320.250.250.2532
05:003.423.420.25320.250.250.2532
06:003.393.390.2554.310.250.250.2554.31
07:004.394.390.550.544.394.390.550.54
08:0053.420.543.2453.420.543.24
09:008.973.470.53260.50.532
10:009.963.460.53270.50.532
11:0010.23.70.53270.50.532
12:0011.24.70.53270.50.532
13:009.973.470.53270.50.532
14:0010.534.030.53270.50.532
15:0010.393.890.53270.50.532
16:009.953.450.53270.50.532
17:009.883.380.53270.50.532
18:009.893.390.53270.50.532
19:009.893.390.53270.50.532
20:009.953.450.53270.50.532
21:009.953.450.53270.50.532
22:009.923.420.53270.50.532
23:004.294.290.25320.250.250.2532