“State regulators tried to assure Texas senators Tuesday that they have the necessary authority to fix the problems that led to the Feb. 2 rolling blackouts, but some lawmakers remained skeptical.

Sen. Kirk Watson, D-Austin, said he wouldn’t want to rush to judgment after one hearing, but he said rolling blackouts are not acceptable.

“We had failures that in some instances were avoidable,” Watson said at a state Senate hearing. “It is unacceptable to have a system that is unprepared.”