That's a rather melodramatic and overstated picture of the energy prospects in the UK. In fact the target energy contribution from 'renewables' is 15% by 2020 - probably much too high, granted, but nowhere near the toal reliance implied by the article. The article is also silent about the inconvenient fact that the British government is committed to building eight new nuclear plants - that's eight more than are in prospect for the U.S., the last I heard.
toal reliance = total reliance, sorry.