The bill, currently the Senate’s favorite among a handful of climate-change bills on the Hill, aims to cut emissions of greenhouse gases 72% by 2050 through a cap-and-trade scheme. The Energy Information Administration, the statistical arm of the Department of Energy, concluded Tuesday that the bill will “significantly” cut emissions without huge cost — though reaching the bill’s targets will be a stretch.

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You can keep your cap on. (Associated Press)

The EIA toyed with several different options: a best-case scenario, where nuclear power makes a comeback, clean coal is a reality, and renewable energy gets big; a high-cost scenario, where the same happens, but costs 50% more; and a few more dismal scenarios which make for tougher going.

According to the EIA, implementing the bill will cut emissions between 45% and 55% by 2030 (compared to doing nothing). And the cost is relatively slight—between 0.2 and 0.6% of GDP by 2030. So far, so good.