TEPCO

TEPCO, short for Tokyo Electric Power Company Holdings, Incorporated, is a major Japanese electric utility. It provides electricity to the Kantō region, including Tokyo, and engages in generation, transmission, and retail operations.

Founded in 1951 as Tokyo Electric Power Company, the firm reorganized in 2016 into a holding company structure to separate generation, grid operations, and retail activities under TEPCO Holdings.

Its generation mix includes thermal, nuclear, hydro, and renewable sources, while TEPCO Power Grid handles the transmission and distribution network for its service area.

TEPCO is widely known for its role in the Fukushima Daiichi nuclear disaster that followed the 2011 Great East Japan Earthquake. Core meltdowns and releases prompted evacuations, extensive decommissioning work, and substantial compensation obligations. The event caused significant financial strain and led to a government-supported restructuring, with ongoing oversight of safety, decommissioning, and long-term liabilities by regulators and a government-backed mechanism.

Today TEPCO remains one of Japan's largest electric utilities, operating generation facilities, the grid, and retail electricity services in the Kantō region. It is regulated by Japan's Ministry of Economy, Trade and Industry and other authorities. The company is publicly traded on the Tokyo Stock Exchange and is owned through TEPCO Holdings by a mix of private and government-related investors.