The High Speed Rail Command Paper published in March 2010 stated that the project was likely to be roughly carbon neutral. The House of Commons Transport Select Committee report in November 2011 (paragraph 77) concluded that the government's claim that HS2 would have substantial carbon reduction benefits did not stand up to scrutiny. At best, the select committee found, HS2 could make a small contribution to the government's carbon-reduction targets. However, this was dependent on making rapid progress in reducing carbon emissions from UK electricity generation.