A proposed class action lawsuit against Florida Power & Light Co. over hurricane-related power outages has cleared its first hurdle: a motion by FPL to dismiss the case that plaintiffs counsel have said could be worth $1 billion.

FPL is the third-largest electric utility in the U.S. with about 4.9 million customer accounts that serve roughly 10 million people across Florida. Its website touts billing rates among the lowest in the nation.