Chester, CT Greenskies Renewable Energy has signed an agreement to build a 339 kilowatt (DC) solar array on the roof of The Whelen Engineering Co. Inc.’s main facility.

The array, which will consist of 1,062 solar photovoltaic panels, will produce 398 megawatt hours (MWh) of electricity annually. It is expected to be completed and operational by October.

Greenskies has already begun the design phase of the project. The construction phase is expected to begin this spring.

Under terms of the solar installation agreement between the two companies, Greenskies – one of the nation’s leading solar energy providers in the commercial, industrial and municipal segments of the industry – will design, engineer and construct the array on the roof of the 185,000 s/f main building on Whelen’s campus and then sell the completed array to the engineering firm.

Whelen Engineering designs and manufactures audio and visual warning equipment for the automotive, aviation, and mass notification industries worldwide. Founded in 1952, Whelen has become a leading provider of sirens, warning lights, white illumination lighting, and controllers. With facilities in Chester and Charlestown, N.H., Whelen products are designed, manufactured, and assembled in the United States.

“We are very excited to be working with Whelen Engineering to help them take a big step towards their energy and sustainability goals,” said Bryan Fitzgerald, a business development associate at Greenskies.

Greenskies designs, builds and maintains solar photovoltaic systems for commercial and industrial clients, municipalities and government agencies, educational institutions and utilities throughout the United States.