The Prime Minister has said that it will be vital that people are offered cheap energy from green power if renewable sources are to be able to meet the world's needs.
Speaking at the opening of an international meeting of energy ministers, David Cameron stated the UK has made good progress in revolutionising its energy, but the key challenge now is to drive down costs.
He said: "At a time when higher gas prices are leaving families and businesses struggling with their energy bills … we don't just need greener energy - we need cheaper energy too."
It's his belief mature renewable energy can be among the cheapest sources of power within years, not decades.
However, his address was criticised by Andy Atkins, executive director of Friends of the Earth, who said the country is still waiting for Mr Cameron to explain how he will meet his pledge to run the greenest government ever.
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