TOKYO, Nov 17 (Reuters) - Tokyo Gas (9531.T) , opens new tab, Japan's largest city gas supplier, said on Monday it sold its U.S.-based subsidiary, TVL LLC, involved in gas development and production to Grayrock Energy for $255 million.

The unit, operating in Louisiana's Haynesville and Cotton Valley formations, was sold as part of Tokyo Gas's strategy to optimise its asset portfolio, it said in a statement.

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https://www.reuters.com/business/energy/tokyo-gas-sells-us-gas-unit-grayrock-energy-255-million-2025-11-17/