The NRG and GeoEye-backed solar energy marketplace will use the funding to expand its recently launched community solar training scheme.

Geostellar, a US-based operator of an online marketplace for solar energy that is backed by energy company NRG Energy and satellite imaging provider GeoEye, closed $7m in new financing on Tuesday.

Investment manager Matador Capital Partners led the round, which included Select Venture Partners, Panacea Capital, Valentis Capital and undisclosed angel investors and family offices.

Founded in 2010, Geostellar operates an online platform that calculates the optimal solar equipment, installation and financing plans for each individual household, helping them to…