Utility interconnection and hosting‑capacity maps explained for municipal solar projects
Utility presenters from National Grid and Eversource walked municipal energy managers through the interconnection workflow — applications, screening, study and service agreements — and demonstrated hosting‑capacity and headroom maps to help site rooftop and ground‑mounted solar.
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Utility engineers told municipal energy managers that the interconnection process starts with an application (and, where appropriate, a pre‑application) to notify the local electric distribution company of the planned site and submit a one‑line, site plan and project narrative. Will Curran, manager of National Grid’s customer energy integration team, said, “It all starts off with the application,” and described three interconnection paths: a simplified residential path (generally for systems about 25 kW and below), an expedited medium‑complexity path, and a standard path for larger rooftop, ground‑mounted or battery projects.
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