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Japan to open up power grids to battery storage for renewables

Subsidies will lower installation costs to help promote wind and solar power

Legal changes in the works in Japan will require power transmission companies to allow batteries to be connected to the grid. (Photo by Ryo Mukano)

TOKYO -- Japan will require power utilities to open up their grids to energy storage systems operated by other companies, aiming to promote a technology that will be key to broader adoption of renewable energy.

The government will also subsidize up to half the cost of battery storage systems, drawing from a 13 billion yen ($114 million) pot of funding in the fiscal 2021 supplementary budget, to make them competitive with other types of energy storage. It plans to solicit applications this fiscal year.

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