P-5

Ancillary Services Prices, Day Ahead Market

04/23/2008

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
01:000.250.250.25450.250.250.2545
02:000.250.250.25450.250.250.2545
03:000.20.20.2450.20.20.245
04:000.250.250.25450.250.250.2545
05:002.692.690.2547.960.250.250.2547.96
06:003.893.890.2579.40.250.250.2579.4
07:0013.7450.583.570.50.583.5
08:0011.550.510070.50.5100
09:0011.550.55070.50.550
10:0011.550.55070.50.550
11:0011.550.55070.50.550
12:0012.5350.55070.50.550
13:0036.550.8450.347.340.840.8450.34
14:0015.450.8450.347.340.840.8450.34
15:0015.513.190.8450.347.340.840.8450.34
16:0010.93.190.8450.347.340.840.8450.34
17:0015.593.190.55070.50.550
18:00103.190.55070.50.550
19:00103.190.55070.50.550
20:0014.663.190.8450.347.340.840.8450.34
21:00103.190.55070.50.550
22:004550.510015.50.50.5100
23:003050.3450.30.30.345