Infrastructure and Energy Alternatives, Inc. is a holding company. The Company operates through two segments: Renewables and Specialty Civil. The Renewables segment operates throughout the United States and specializes in providing complete engineering, procurement and construction (EPC) services for the renewable energy, traditional power and civil infrastructure industries. The Renewables segment services include the design, site development, construction, installation and restoration of infrastructure. The Renewables segment has maintained a focus on the construction of renewable power production capacity as renewable energy, particularly from wind and solar. The Specialty Civil segment operates throughout the United States and specializes in a range of services that create a diverse national platform of construction capabilities, including environmental remediation services, rail infrastructure services and heavy civil construction services.