P-5

Ancillary Services Prices, Day Ahead Market

05/31/2010

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)
00:001.731.530.05280.250.050.0528
01:000.810.620.06280.250.060.0628
02:000.810.620.06280.250.060.0628
03:000.810.620.06280.250.060.0628
04:000.810.620.06280.250.060.0628
05:000.810.620.06280.250.060.0628
06:000.810.620.06280.250.060.0628
07:004.271.110.17304.271.110.1730
08:004.151.110.18304.151.110.1830
09:0071.110.183071.110.1830
10:0071.110.183071.110.1830
11:007.931.120.1921.9870.190.1921.98
12:009.152.340.192070.190.1920
13:009.162.340.182070.180.1820
14:009.172.350.182070.180.1820
15:009.172.350.1822.2870.180.1822.28
16:009.172.350.1823.0870.180.1823.08
17:007.031.110.1927.3171.080.1927.31
18:009.172.350.183070.180.1830
19:009.172.350.183070.180.1830
20:009.172.350.1828.3870.180.1828.38
21:009.172.350.183070.180.1830
22:0071.110.193071.110.1930
23:001.741.520.03300.250.030.0330