As the longest serving renewable energy retailer in the United States, Green Mountain Energy is a clean power pioneer. We believe in using wind, sun and water for good, something that sets us apart from other electricity suppliers. When you choose Green Mountain Energy, you're doing more than just picking an electricity supplier – you are joining us in our mission to change the way power is made. We offer our customers innovative renewable energy plans and excellent customer service, all while minimizing our own impact on the environment.