Iberdrola is one of the largest utilities in the world with electric utility operations in nearly 40 countries. The company has a 56-gigawatt portfolio of hydro, wind, natural gas, and nuclear power plants. It is the largest owner of wind farms in the world, representing about 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 UK, Brazil, and the US.