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Energy: Is solar still worth it?

With a big enough roof, yes

By Andy Davis   April 2013

When those in power want something to happen, history shows they can create irresistible incentives to make it so. The Bank of England keeps bond yields at extreme lows by summoning yet more electronic money into existence. The department of energy and climate change scatters photovoltaic solar panels across Britain’s rooftops using only the power of public subsidy.

Being the sort of investor who likes someone else to take the risk and leave me with the reward, I didn’t take much persuading to call in the solar panel installers in spring 2010. At that point, the government was offering a…

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