Yesterday, CBO released an analysis that examines the average cost per household that would result from the greenhouse gas cap-and-trade program in the American Clean Energy and Security Act of 2009 (H.R. 2454, as it was reported by the Committee on Energy and Commerce) and how that cost would be spread among households with different levels of income. The analysis does not include the effects of other aspects of the bill, such as federal efforts to speed the development of new technologies and to increase energy efficiency by specifying standards or subsidizing energy-saving investments.
On that basis, CBO estimates that the net annual economywide cost of the cap-and-trade program in 2020 would be $22 billion—or about $175 per household. That figure includes the cost of restructuring the production and use of energy and of payments made to foreign entities under the program, but it does not include the economic benefits and other benefits of the reduction in greenhouse gas emissions and the associated slowing of climate change. Of the total cost, CBO could not determine the incidence of certain pieces (including both costs and benefits) that represent, on net, about 8 percent of the total.
For the remaining portion of the net cost, households in the lowest income quintile would see an average net benefit of about $40 in 2020, while households in the highest income quintile would see a net cost of $245. Added costs for households in the second lowest quintile would be about $40 that year; in the middle quintile, about $235; and in the fourth quintile, about $340. Overall net costs would average 0.2 percent of households’ after-tax income.
FULL POST
The CBO admits that there are several things not taken into account in this estimate. But this is the conclusion they've reached thus far.
I have to say, I'm pleasantly surprised with this figure.

