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The national grid's reliance on gas, the most expensive source of power, keeps bills high - even if there's also large-scale generation coming from cheaper renewable sources, like wind power.

That said, though China continues to rely heavily on coal, it has also begun investing in solar and wind power.

There are times when wind power is actually paid not to generate, because the grid cannot handle all the electricity that it could produce.

The organisation said it was concerned about the expansion of offshore wind power, a lack of compensation for the industry and a resetting of relationships with the EU.

In climate scenarios with lower hydropower shortfalls and lower increases in energy consumption, wind power would mostly fill the gap.