Friends of the Earth director of policy and campaigns Craig Bennett said the nuclear power agreement with Chinese investors was "a bad deal for taxpayers".
Mr Bennett said:
The Government has chosen to give enormous long-term handouts to Chinese and French companies when they could be developing a world-class renewable industry in the UK.
The reality is that nuclear power takes decades to build, but climate change and energy challenges are upon us now - this focus on nuclear distracts from more urgent priorities such as delivering energy efficiency to households who are suffering rocketing energy bills due to the rising price of gas.
The Chancellor's agreement with China opens the door to investment in Britain's new generation of nuclear power plants, but at what cost?
The Chancellor has given formal Government approval for Chinese state-run firms to buy into British nuclear power - should we be worried?