Warren Buffett’s MidAmerican Energy plans $3.9 billion renewables project in Iowa MidAmerican Energy says it’s also proposing “feasibility studies” centered around technologies such as energy storage, small modular nuclear reactors and carbon capture. According to the American Clean Power Association, wind was Iowa’s “largest source of electricity generation” in 2020. https://www.cnbc.com/2022/01/21/buffetts-midamerican-energy-plans-3point9-billion-wind-solar-project.html