Iberdrola, S.A.

Iberdrola is one of the largest utilities in the world, with electric utility operations in nearly 40 countries. The company has a 52-gigawatt hydro, wind, natural gas, and nuclear power plant portfolio. It is the world's largest owner of wind farms, representing nearly 40% of its portfolio. Although the company has recently developed or acquired distribution and power generation assets in other geographic areas, Spain is still home to around 50% of its power generation capacity. Iberdrola also owns and operates electricity and distribution networks in Spain, the U.K., Brazil, and the U.S.