Sun setting on Japan's solar energy boom

The sun is setting on Japan's clean-energy boom, despite projects like a massive floating solar farm near Tokyo, as the government cuts subsidies and bets on nuclear and coal-fired power, critics say.

Battery system for wind turbines to stabilize electricity prices

The problem with wind turbines is that they produce electricity "as the wind blows." When there are high winds, production increases and the price of electricity falls; when the wind tapers off, production decreases and the ...

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