Richmond-based Fortune 500 utility Dominion Energy has entered into a definitive agreement to be acquired by Fortune 200 Florida energy company NextEra Energy in an all-stock transaction worth approximately $66.8 billion.

NextEra bills itself as the largest electric power and energy infrastructure company in North America. According to a Monday announcement from the two companies, the merged company would be the world’s largest regulated electric utility business. It would serve about 10 million utility customer accounts across Florida, Virginia and the Carolinas and own 110 gigawatts of generation from a mix of energy sources, and it would be more than 80% regulated. As of late 2024, Dominion provided electricity to 2.7 million customers in Virginia.