Half global electricity production must come from renewables if carbon emissions are to be halved by 2050, according to the International Energy Agency.
Cutting emissions in half is seen as a target that has to "minimise significant and irreversible climate change impacts".
IEA executive director Nobuo Tanaka said that governments have to take "urgent action" and that he expected them to do more.
"Setting a carbon price is not enough. To foster a smooth and efficient transition of renewables towards mass market integration, renewable energy policies should be designed around a set of fundamental principles, inserted into predictable, transparent and stable policy frameworks and implemented in an integrated approach," he added.
Among the principles the report urged policy makers to follow was the reduction of non-economic barriers, such as administrative hurdles, obstacles to grid access and social resistance.
Good Energy is the only one of the UK's electricity providers that generates at least half of its electricity from renewables. Its fuel mix comes 100 per cent from renewables, meaning that it emits no carbon dioxide in the generation of electricity.
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