Derry, New Hampshire launches 2.25 MW solar array on landfill

The Town of Derry has energized a new 2.25-megawatt solar array, marking a step forward for its local sustainability efforts. Developed by Encore Renewable Energy, the ground-mounted system is situated on a 10-acre capped municipal landfill off Kendall Pond Road. The project was selected through a competitive bidding process in 2021 and is expected to save the town roughly $4 million in electricity costs for municipal buildings over the next 25 years. On September 1, local officials held an official ribbon-cutting ceremony as the array began feeding power into the New England grid.

This project transforms a site that sat idle and closed for years into a productive source of clean energy. To bring the array to life, Encore Renewable Energy collaborated with the Derry Net Zero Task Force, a group of local engineers, business owners, and representatives. The task force is working toward a goal of reaching net zero energy for all town facilities by 2025. By lowering power costs that would otherwise be funded through local taxes, the project helps the town remain fiscally responsible while pursuing its environmental objectives.

During the ceremony, Chad Farrell, President and Founder of Encore Renewable Energy, spoke about the value of giving underutilized land a new purpose. He stated, "This site sat capped, fenced off, and basically unused for years. It’s the kind of property that most people drive by without a second thought. At Encore, we believe that land like this deserves a second act." The location was selected for its size, consistent sun exposure, and its close proximity to the transmission infrastructure needed to move power effectively.

The partnership between the Town of Derry and Encore Renewable Energy includes a lease for the old landfill property, offering a new stream of revenue for the town. While the specific lease amounts have not been disclosed, the most significant financial benefit comes from a long-term power purchase agreement with Eversource. Under this deal, the town will buy electricity at a fixed rate of $0.065 per kWh, which is less than half the current utility rate of approximately $0.14 per kWh. These savings are expected to reach between $250,000 and $300,000 for Derry taxpayers in the first year alone.

The completion of the solar array highlights Derry's ongoing focus on balancing sustainable practices with financial stability. Town Administrator Mike Fowler and Town Councilor at Large Jack Webb both noted the essential role the Net Zero Task Force played in moving the project from a concept to reality. As the town looks toward future renewable energy options, the success of this landfill conversion provides a model for how Derry might continue to meet its community goals and strengthen its long-term financial health.