The European Union must "do more" to lead worldwide efforts to limit climate change, the UK government has said.
Speaking after the UN urged moving from fossil fuels to renewable sources, Climate Change Secretary Ed Davey said other countries must try to be as "ambitious" as the UK.
It was possible to make such changes in a "cheap" way, he told the BBC.
But Labour said there had been a "decline in investment in green energy" under the coalition government.
The long-awaited UN report on how to curb climate change said the world must rapidly move away from carbon-intensive fuels.
There must be a "massive shift" to renewable energy sources such as wind and solar, it argued, saying natural gas was an important stage in a movement away from oil and coal.
The report is the work of the UN's Intergovernmental Panel on Climate Change (IPCC), which was set up to provide a clear scientific view on climate change and its impacts.
Mr Davey told the BBC he "strongly" agreed with its findings, saying the UK government had doubled the amount of electricity generated from renewable sources in recent years.
He added: "We've got to do more and we've got to do more to
Mr Davey also said: "I want other European countries to be more ambitious... We can go green and we can do it in a cheap way. The cost of renewables has been coming down significantly."
He also said: "The message of this report is clear. Greenhouse gas emissions have accelerated in recent years due to human activity.
"We need a large-scale change to our global energy system if we are to limit the effects of climate change. The longer we leave it, the more difficult and costly it will be."