Sustainable renewable energy company

Large renewable energy companies are headquartered in Spain, Denmark, China, the United States, and Canada. These are the 10 biggest renewable energy companies by 12-month trailing (TTM). [pdf]

Alliance for sustainable energy national renewable energy laboratory

The National Renewable Energy Laboratory (NREL) in the US specializes in the of , , energy systems integration, and sustainable transportation. NREL is a sponsored by the and operated by the Alliance for Sustainable Energy, a joint venture between [pdf]