P-5

Ancillary Services Prices, Day Ahead Market

12/18/2008

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)
00:000.840.840.25450.250.250.2545
01:002.322.320.25450.250.250.2545
02:000.250.250.25450.250.250.2545
03:000.250.250.25450.250.250.2545
04:000.250.250.25450.250.250.2545
05:002.322.320.25450.250.250.2545
06:002.342.340.25450.250.250.2545
07:006.952.380.5456.952.380.545
08:0072.360.54572.360.545
09:0072.360.54572.360.545
10:0072.350.54572.350.545
11:0072.350.54572.350.545
12:0072.350.54572.350.545
13:0072.350.54572.350.545
14:0072.350.54572.350.545
15:0072.350.54572.350.545
16:006.952.340.5456.952.340.545
17:0012.952.362.3650.9512.952.362.3650.95
18:008.282.321.7846.288.282.321.7846.28
19:007.662.321.2345.737.662.321.2345.73
20:006.952.331.145.66.952.331.145.6
21:008.852.351.4745.977.971.471.4745.97
22:006.322.360.5456.322.360.545
23:002.352.350.3450.30.30.345