Renewable Energy Manufacturing Companies in Connecticut

Connecticut has approximately 4,200 manufacturing establishments and 160,000 manufacturing employees. Connecticut is a precision manufacturing powerhouse, home to Pratt & Whitney, Sikorsky, and Electric Boat, with deep expertise in aerospace and defense components.

Connecticut contributes to the national renewable energy manufacturing landscape. Renewable energy manufacturing includes companies that produce solar panels, wind turbine components, energy storage systems, inverters, and balance-of-system equipment. The Inflation Reduction Act has catalyzed a massive buildout of US renewable energy manufacturing, with dozens of new factories announced for solar cells, wind turbine blades, battery storage, and related components.

Solar Panel Manufacturers: Companies producing solar cells and modules, from silicon ingot processing to finished panel assembly.

Wind Turbine Component Makers: Manufacturers of blades, towers, nacelle components, gearboxes, and generators for onshore and offshore wind.

Battery Storage Manufacturers: Companies producing utility-scale and commercial battery energy storage systems and components.

Inverter & Power Electronics: Manufacturers of string, central, and microinverters plus power conversion equipment for renewable installations.

Mounting & Racking Systems: Companies producing steel and aluminum mounting structures for ground-mount and rooftop solar installations.

Major industrial centers in Connecticut include Hartford, Bridgeport, New Haven, Stamford, and Waterbury. These cities have concentrations of manufacturers across sectors including aerospace manufacturing, defense manufacturing, and medical device manufacturing.