Form Energy, the U.S. long-term energy storage startup, has closed a $750 million G Series round to expand the manufacturing of its iron-air batteries in West Virginia, at a time when the boom of artificial intelligence data centers triggers demand for reliable power supply. The round, led by T. Rowe Price, featured the participation of Sequoia Capital, Janus Henderson, Franklin Templeton, TPG Rise Climate, Breakthrough Energy Ventures, GE Verno…