How it works- Slide the ruler to show your building’s roof area to calculate the estimated revenue, size and production of a rooftop-mounted solar photovoltaic system.

*This calculator is designed using the SMART parameters for a 1MW, block 2, roof-mounted system within Eversource service territory and is subject to change. For more information on SMART, visit our blog!

*Example shows projections for MA, revenue differs by state