Renewable energy is generated and used on the Strip. MGM initiated solar power when it built a solar array on top of the Mandalay Bay in 2014 and expanded it in 2016 . The solar array at the Mandalay Bay, a 28-acre system capable of powering 1,300 homes, is one of the largest commercial rooftop solar arrays in the United States. The solar array includes more than 26,000 solar panels capable of providing a total of 8.3 megawatts DC (6.5 megawatts AC), sufficient for powering 25% of the Mandalay Bay campus.