Solar power in the UK almost doubled in 2014, with total installations on homes, businesses, and even bridges, surpassing 650,000, according to year end figures from the Department of Energy and Climate Change.

The almost five gigawatts of solar photovoltaic panels now is enough to supply the equivalent of 1.5 million homes in the UK, according to the solar industry.

Paul Barwell, chief executive of the Solar Trade Association called it a milestone achievement for Britain's several thousand solar businesses. "These small and medium sized companies are at the forefront of a real solar transformation as the technology steadily becomes one of the cheapest sources of clean, home-grown power."

(READ more in the Guardian) – Photo by ATIS547, via CC license