Milton climate panel endorses municipal decarbonization roadmap, asks staff to verify vehicle inventory

The Climate Action Planning Committee voted unanimously at its May 21 meeting to recommend that the Select Board approve the Municipal Decarbonization Roadmap, a non-binding plan that outlines steps to decarbonize Milton’s municipal operations by 2050.

Municipal Energy Manager Kai Mueller introduced the final Roadmap, prepared with consultant support from Power Options under DOER technical assistance. The plan narrows its buildings analysis to the town’s 10 largest municipal buildings, which the Roadmap says account for more than 90% of municipal building emissions. Mueller highlighted a set of “trigger events” — projected end-of-life points for heating and cooling equipment — intended to help prioritize electrification and replacement timing.

The Roadmap notes Pierce Middle School as an early candidate for a ground-source heat-pump system under the trigger schedule, potentially around 2028. Committee members cautioned the timeline is a first-pass estimate. The High School comprehensive assessment, cited by Mueller, projects a ground-source heat-pump retrofit cost on the order of $50 million for that building; the Roadmap itself is presented as high-level and non-binding.

Several members said the Roadmap’s credibility with the Select Board depends on accurate underlying data. Stephen Popkin questioned the reported fleet count (197 town vehicles, including 118 light-duty), calling it surprisingly high; Mueller said the figure comes from Mass Energy Insights and DMV/RMV data and may include vehicles no longer in active use. Committee members said an obviously incorrect inventory could undermine the report and the committee’s recommendation.

The committee’s motion to recommend Select Board approval — moved by Matt Panucci and seconded by Arthur Doyle — included a clear expectation that Town staff verify the vehicle inventory and other on-the-ground details before Select Board consideration. The roll-call vote was unanimous (6–0).

Why it matters: endorsement of the Roadmap is one of two remaining items Milton must have signed by the Select Board and the School Superintendent before submitting a Climate Leader Community application to the state Department of Energy Resources (DOER) ahead of the June 30 deadline. Climate Leader Community designation would make Milton eligible for implementation grants — the program can unlock up to $1 million per grant cycle for energy and climate projects and up to $150,000 in technical assistance.

Next steps: Town staff were assigned to verify the active vehicle fleet count and confirm other details prior to Select Board review. The Roadmap endorsement is advisory; formal adoption by the Select Board (and School Superintendent sign-off) will determine whether Milton’s CLC application is completed in time for the current DOER cycle.