With over 25 years of long-established experience we couldn't be more invested in the local community. We use the latest technology from the world's top manufacturers to deliver great solar power installations that will run for decades!

G&A was established in 1989 by Vincent Guntlow, a professional civil engineer who is registered in five states. The firm is a multidisciplinary design consulting firm in Williamstown, Massachusetts and offers services that include civil and environmental engineering along with property and topographic survey, landscape architecture, wetland consulting and architecture. A mid-sized firm, that takes great pride in its direct, hands-on involvement in all projects. All work is directly reviewed, by the owner/principal, with the utmost attention paid to quality and the best interests of its clients.

Simply put when sunlight hits a solar panel, the cells that make up the module transform light into direct current (DC) electricity. This is known as the photovoltaic effect. This DC power is then converted into alternating current (AC) using additional wiring, an inverter or series of microinverters. The solar energy produced by the PV array powers your home or business and offsets your utility electrical usage. When the sun isn't providing any sunlight for your panels (like at night), your utility provides you with the electricity for your loads.