Tokyo Gas and Okaya launch 75 MWh BESS project in Hokkaido
Tokyo Gas Co., Ltd. and Okaya & Co., Ltd. announced plans to begin construction in December 2025 of a 25 MW/75 MWh battery energy storage system (BESS) in Tomakomai, Hokkaido
Tokyo Gas first announced its entry into the BESS industry in April 2024. Tokyo Gas launched grid-scale battery storage trading optimization service, the company said on March 6, 2025. It secured Renova as the launch customer, signing a contract for two of its upcoming power storage stations totaling 165MW.
As of most recent estimates, the cost of a BESS by MW is between $200,000 and $450,000, varying by location, system size, and market conditions. This translates to around $200 - $450 per kWh, though in some markets, prices have dropped as low as $150 per kWh. Key Factors Influencing BESS Prices
Tailored to the specific requirement of setting up a Battery Energy Storage System (BESS) plant in Texas, United States, the model highlights key cost drivers and forecasts profitability, considering market trends, inflation, and potential fluctuations in raw material prices.
Factoring in these costs from the beginning ensures there are no unexpected expenses when the battery reaches the end of its useful life. To better understand BESS costs, it's useful to look at the cost per kilowatt-hour (kWh) stored. As of recent data, the average cost of a BESS is approximately $400-$600 per kWh. Here's a simple breakdown:
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