General Electric yesterday signaled that it is about to become more visible and aggressive in the increasingly competitive microgrid market. “The technology is ready, and we are now ready to scale up,” said Herve Amosse, GE’s general manager for grid automation, siting an increasingly viable business case for microgrids as renewable energy costs fall. The Connecticut-based company is among a growing field of international technology giants pursuing the microgrid market. Others include ABB, Hitachi, Schneider Electric and Siemens. In the U.S. the companies are pursuing a market pegged at $200 million and expected to reach $800 million in four years, according to GTM Research.