Business Green: The failure of the government’s upcoming emissions trading scheme to recognise investments business have already made in renewable energy is threatening to alienate some of the UK’s most high profile green business pioneers, with critics accusing the government of “blackmailing” businesses into accepting carbon accounting rules that will downplay their support for green energy. The Carbon Reduction Commitment (CRC) is due to start in April 2010 and is at the centre of the government’s …