Planning board debates tiers and local controls for battery energy storage systems bylaw

At the June 22 meeting the Zoning Bylaw Subcommittee (ZBS) work on a battery energy storage systems (BESS) bylaw returned to the full planning board’s agenda. Members reviewed a circulating amendment packet and discussed a tiered regulatory structure.

Discussion centered on three practical classes: (1) small, behind‑the‑meter systems for individual properties; (2) mid‑sized, town‑regulated systems below a specified megawatt threshold; and (3) larger installations that either trigger state siting review or that the town would manage more tightly if sited on town land. Members debated whether the strictest controls should be reserved for town‑owned properties or apply wherever larger systems are proposed.

Board members raised specific control tools for larger projects, including expanded setbacks (the current draft refers to maximums up to roughly 200 feet in some provisions), landscape screening, monitored perimeter/"ring fence" detection networks and stricter decommissioning and environmental‑impact requirements. Tag circulated a multi‑page amendment that includes language to differentiate requirements by tier and to add monitoring and landscape requirements for high‑impact systems.

Next steps: the ZBS will continue to refine the draft; members asked Tag and staff to consolidate proposed edits into the June 11 draft and circulate a single working document for review before the late‑July meeting.

Why it matters: the bylaw will determine where and how large‑scale energy storage can be sited in town and which projects remain under local control versus those subject to state review.