Real Goods Solar, Inc. operates as a residential and commercial solar energy engineering, procurement, and construction company in the United States. It operates in three segments: Residential, Sunetric, and Other. The company offers solar energy services, including design, procurement, permitting, build-out, grid connection, financing referrals, and warranty and customer satisfaction. It installs residential solar energy systems up to 15 kilowatts (kW) in size; and small commercial solar energy systems up to 500 kW in size for various industries, such as retail, manufacturing, service, and municipal services. The company markets its products and services through an outside sales team, e-sales, and inside sales, customer referral programs, and alliances and channel partnerships, as well as online. Real Goods Solar, Inc. was founded in 1978 and is headquartered in Louisville, Colorado.