The total clean-up costs and claims were initially estimated to be around 5tn yen.

BBC: Tepco seeks more aid as Fukushima clean-up costs rise

But Michael Liebreich, the boss of New Energy Finance, expects total investments in clean energy to fall only slightly in 2008, thanks to a strong performance in the first part of the year.

ECONOMIST: Clean technology in the downturn

The 84 million kWh combined solar power will be added to the 40 million kWh of electricity that will be produced by an onsite biogas-powered 5-megawatt fuel cell installation for a total of 124 million kWh of clean onsite power.

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