According to the Japanese media "Asahi Shimbun" on September 8, a subsidiary of Tokyo Electric Power Company (TEPCO), Agile Energy, is moving into bitcoin mining. Kenji Tateiwa, the president of the company, claimed that the company's success "will prompt the introduction of more green energy." The company has installed mining machines near solar farms in Gunma and Tochigi prefectures near Tokyo to capture and utilize potential wasted energy. He added that the concept was inspired by Japan's practice of "output control", which sometimes limits the production of renewable energy - deliberately cutting output below what can be produced to balance supply and demand or align with transmission limits.