The Electric Reliability Council of Texas (ERCOT) issued its first emergency alert since January 2014, after record demand driven by a summer heat wave last week pushed electricity prices above $9,000 per megawatt-hour and reduced the sprawling state’s electricity reserves from at least 3,000 to less than 2,300 MW.

Minnesota is the latest U.S. state to consider grid-scale storage as a possible alternative to natural gas peaker plants, under a new state law that requires power companies to include storage in their long-range plans.

With utilities in two southern U.S. states resorting to planned outages to stop their equipment from sparking wildfires during dry, windy conditions, power users are looking for more reliable electricity—and solar and storage battery providers are stepping up to respond.