Customers will suffer because £17billion of contracts handed to companies to transmit power to the mainland were ‘too generous’.
The deals guarantee rich pickings for investors because ministers failed to learn the lessons from tangling with big business through private finance initiatives, the public accounts committee warned.
Chairwoman Margaret Hodge said: ‘The terms of the transmission licences appear to have been designed almost entirely to attract investors at the expense of securing a good deal for consumers.’
Ministers hope 15 per cent of Britain’s power will come from wind farms by 2020. But that requires £8billion of investment in equipment such as platforms, cables and substations.