IEA

Infrastructure and Energy Alternatives Inc

A construction firm that builds renewable-energy and utility-scale projects, this company erects wind turbines, installs solar farms, and constructs highways, bridges, and rail work across North America. It was formed in 2011 as a holding company with roots reaching back to 1947, folding several contractors into one business, including a heavy civil firm from Clinton, Indiana. In 2022 it became part of MasTec, a large U.S. infrastructure builder.