Business Green: A national renewable energy standard could create more than 274,000 more jobs in the US, according to a new study, which argues that mandatory targets for renewable energy generation would prove one of the most effective means of generating so-called "green collar jobs". Lobby group the RES Alliance for Jobs commissioned Navigant Consulting to analyse the employment impact of proposals for a "25 per cent by 2025" renewable energy standard, which would force US energy firms to source a …