Google to be powered 100% by renewable energy from 2017

Internet giant says renewable energy is increasingly lowest cost option and it will not rule out investing in nuclear power

Google's data centres and the offices for its 60,000 staff will be powered entirely by renewable energy from next year, in what the company has called a "landmark moment".

The internet giant is already the world's biggest corporate buyer of renewable electricity, last year buying 44% of its power from wind and solar farms. Now it will be 100%, and an executive said it would not rule out investing in nuclear power in the future, too.