Iberdrola, S.A. engages in the generation, transmission, distribution, and supply of electricity in Spain, the United Kingdom, the United States, Mexico, Brazil, Germany, France, and Australia. It generates electricity from renewable sources, such as onshore and offshore wind, hydro, photovoltaic, combined cycle gas, and conventional nuclear, as well as through batteries. The company is also involved in the purchase and sale of electricity and gas on wholesale markets; energy retail supply activities, such as gas and electricity, and other products and services, including hydrogen, as well as non-renewable generation; and production of green hydrogen.