What is the largest electric utility in Japan?

Written by Editorial Team | Last Updated: August 2026

Tokyo Electric Power Company Holdings (TEPCO) stands as the largest electric utility enterprise in Japan. Providing electricity to the economic heart of Japan, including Tokyo and surrounding prefectures, TEPCO manages vast power generation and high-voltage transmission networks. Alongside TEPCO, major regional utilities like Kansai Electric Power Company and Chubu Electric Power manage massive generation portfolios, collectively ensuring reliable energy delivery across the nation's industrial and residential sectors.

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