For the purposes of qualifying for net metering credits, section 138 of M.G.L. c. 164 defines a “Solar Net Metering Facility” as “a facility for the production of electrical energy that uses sunlight to generate electricity and is interconnected to a Distribution Company.” The statute and accompanying regulations are silent regarding the co-location of energy storage equipment with such a qualifying Solar Net Metering Facility.
National Grid has interpreted this silence to be a total prohibition on solar + storage for net metering facilities.… More