EPRX July 2025 membership updates: 10 companies join, total tops 100

August 20, 2025
Power Market
EPRX’s membership topped 100 for the first time.

In July 2025, 10 companies joined the Electric Power Reserve Exchange (EPRX), which runs Japan’s balancing market. With that, the exchange had 103 members as of the end of the month.

The new members include:

  • Engelhart CTP LLC
  • Erex Co., Ltd.
  • Green Growth Inc.
  • GrowShip Co., Ltd.
  • HeLM Aggregation Co., Ltd.
  • Nika LLC
  • Qvou Co., Ltd.
  • ReENE Co., Ltd.
  • Tokyu Power Supply Co., Ltd.
  • Yonden Demand Side Storage LLC

EPRX was established on April 1, 2024, to take over the operation of Japan’s balancing market, which was partially launched in April 2021, from a cooperative of Japan’s nine mainland TSOs.

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