Press Association: The levels of “cashback” people will get for small scale renewable electricity such as solar panels are to be set out – but campaigners are concerned the rates will not be high enough to boost uptake of the green technology. The feed-in tariffs will be available to environmentally-friendly energy schemes up to 5MW, equivalent to two large wind turbines, as part of efforts to green the UK’s electricity supply. But green groups and the micro-renewables industry are worried that …