The federal government could net $24 billion under pending energy and climate change legislation in the House over the next ten years. In a June 5 report, the Congressional Budget Office said that federal revenue under the American Clean Energy & Security Act of 2009, H.R. 2454, likely would total $845 billion between 2010 and 2019 compared to new federal spending of $821 billion. Most of the revenue would result from the bill\u2019s carbon cap-and-trade program, under which the federal government would auction off emissions rights for greenhouse gases. Auctions would occur four times a year. CBO said that 7,400 facilities would be covered under the bill\u2019s cap-and-trade market. In 2012, the federal government would allocate emissions rights for 4,581 million tons of greenhouse gases, auctioning off 29.6 percent of those rights and allocating 70.4 percent free of charge. The amount auctioned would decline through 2019, but then climb until 70 percent of the rights were auctioned in 2031. The budget office noted that federal spending under the program would finance a plethora of new government programs, such as a natural resources climate change adaptation fund and loans for advanced vehicles and deployment of clean energy technologies. However, spending also would increase under existing programs. For instance, the office noted that the bill would stimulate more companies to draw renewable energy production tax credits. It also would likely increase claims for low-income energy assistance programs, the office said.