Watertown considers solar project for vacant landfill site

Watertown City Council is weighing options for a solar farm on part of the city’s vacant landfill, a project that could generate revenue but also carry financial risk.

Willdan Performance Engineering presented plans for using 40 acres of the 78-acre landfill site. The largest option was described as producing more than 14,000 megawatts annually. Willdan estimates that a full-size project could lose as much as $151,000 per year or earn up to $450,000, depending on the outcome.

The landfill has been vacant for years. A similar proposal in 2019 and a lease offer in 2020 did not move forward. Earlier 2026 coverage reported that a consultant determined the site could support a 40-acre first phase.

Council Member Ben Shoen expressed support for making use of the property, while Council Member Shane Garrabrant raised concerns about battery storage and cited a 2023 solar facility fire in the Town of Lyme that burned for about four days. Willdan representative Greg Royer said battery technology is improving.

Council members want additional financial information before making a final decision. The city’s next regular council meeting is scheduled for Oct. 19, 2026, at 7 p.m. in Council Chambers at 245 Washington St. The posted agenda does not list the solar proposal, though agendas can change. Residents may attend council meetings and address the council during Privilege of the Floor.