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Corporate Information

  1. Corporate Overview
  2. Investor Relations
  3. Procurement
  4. International Activities
  5. Overseas Consultancy Services
  6. R&D
  7. Open Innovation

The NAS battery is an advanced secondary battery having a variety of attractive features such as high energy density, high efficiency, long lifetime and so on. TEPCO, in cooperation with NGK Insulators, has executed intensive R&D activities including demonstration of megawatt class systems to realize cost reduction and high reliability, leading to NAS battery commercialization in April 2002. Its reliability and performance is highly appreciated as reflected by its use for the FIFA World Cup 2002 held in Korea/Japan.