CBO estimates the cost of ACES (again)

From the Director's Blog:

CBO concludes that the cap-and-trade provisions of H.R. 2454, the American Clean Energy and Security Act of 2009, would reduce GDP below what it would otherwise have been—by roughly ¼ to ¾ percent in 2020 and by between 1 and 3½ percent in 2050. By way of comparison, CBO projects that real (that is, inflation-adjusted) GDP will be roughly two and a half times as large in 2050 as it is today, so those changes would be comparatively modest. In the models that CBO reviewed, the long-run cost to households would be smaller than the changes in GDP because consumption falls by less than GDP and because households benefit from more time spent in nonmarket activities. Moreover, these measures of potential costs do not include any benefits of averting climate change.