Okay, I had to do some additional research but here goes. I used the CNET article/test for HDTV power consumption which can be found here: http://reviews.cnet.com/4520-6475_7-...3.html?tag=nav
Using the test results, I compared your Toshiba 32A60 with a Panasonic TH-42PX60U (720P) and a Panasonic TH-42PZ700U (1080P). Actually, it lists the TH-PX700U in the report, but I think that is a typo. (Based on the power consumption, I believe it should have been listed as the TH-42PZ700U 1080P model and not the TH-PX700U model which is 720P.) The 80U and 85U were not listed on the report, but the power consumption for these should be comparable to last years 720P and 1080P models respectively. Their test measured the average power consumption based on watching a 1 hour program and using a power meter. These values should be comparable to the average power consumption listed on your Toshiba.
I found the average cost per KW-HR per US household here: http://www.eia.doe.gov/cneaf/electri.../table5_3.html
This value turned out to be 10.64 cents per KW-HR for the year 2007. Your power rate may be more or less than this power rate.
Here are the results assuming 8 hours of use each day:
Toshiba 32A60 = $32.31 per year
Panasonic TH-42PX60U = $76.13 per year
Panasonic TH-42PZ700U = $144.18 per year
From the results, it looks like a 1080P plasma panel costs about twice as much to operate as a 720P plasma panel.