The Japanese government is seeking to expand solar power by enacting subsidies and a (FIT). In December 2008, the announced a goal of 70% of new homes having solar power installed, and would be spending $145 million in the first quarter of 2009 to encourage home solar power. The government enacted a feed-in tariff in November 2009 that requires utilities to purchase excess solar power sent to the grid by homes.
[pdf] ソーラーエッジ・テクノロジーズ（SolarEdge Technologies, Inc.）は2006年に設立され、直流最適化インバーターシステムを開発した企業。 同社は、発電した電力をインバーターにフィードバックする前に、モジュールレベルで最大電力点追従（MPPT）を行う装置であるパワーオプティマイザーの製品化に初めて成功した。
[pdf] The in Japan covers the generation, transmission, distribution, and sale of in . Japan consumed approximately 918 terawatt-hours (TWh) of electricity in 2014. Before the 2011 , about a quarter of electricity in the country was generated by nuclear power. In the following years, most nuclear power plant.
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