Renewable energy sources must become “financially sustainable” if they are to meet the world’s needs, David Cameron has said.
Opening a meeting of international ministers later, he hailed progress made by the UK in the “green energy revolution”. But the prime minister said the challenge now is to drive down costs.
He also welcomed the investment of £350 million on energy projects that will create 800 jobs.
Taking office in 2010, Mr Cameron pledged to lead the “greenest government ever”, but environmental campaigners say that promise is so far proving hollow.
Meanwhile, ministers from 23 countries gathered in London on Thursday for a clean energy summit.
Opening the event, the prime minister said the world urgently needs “a more diverse, cleaner mix of energy sources that will give us… security without causing irreparable damage to the planet”.
“Renewables are now the fastest growing energy source on the planet. And I am proud that Britain has played a leading role at the forefront of this… revolution,” he added.