wind power

It's still the leader in the United States in the amount of wind power, and has also made big investments in conservation.

So lots of wind power in northern Scotland could mean cheaper prices for northern Scots.

In order to meet that target, the UK will need to triple offshore wind capacity and double the amount of solar and onshore wind power on the system, according to estimates by Aurora Energy.

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.