The Commonwealth Hydropower program, administered by the Massachusetts Clean Energy Center (MassCEC), is designed to support the modernization and expansion of hydropower infrastructure across the state. Massachusetts is home to a significant number of small hydropower facilities, many of which date back to the Industrial Revolution. These facilities represent an untapped opportunity to enhance clean energy production while minimizing ecological disruption. The program also targets the development of new “conduit” facilities that harness energy from water movement in water and wastewater infrastructure.

This grant program provides funding for both feasibility studies and construction projects aimed at increasing energy output at Massachusetts Renewable Portfolio Standard (RPS)-qualified hydropower sites. Awards are capped at $300,000 and are determined in part by the expected increase in energy production, based on MassCEC’s standardized modeling methodology. Eligible projects should demonstrate tangible economic benefits to Massachusetts-based entities or workers.

In 2025, the program cycle began with the release of the Request for Proposals (RFP) on March 7. The deadline for submitting questions was March 14 at 5:00 PM, although no questions were submitted in this round. Completed proposals are due by May 2, 2025. Following proposal submission, top applicants may be selected for interviews or site visits in June, and final funding decisions will be announced in early August 2025.

Eligible applicants include commercial, industrial, institutional, nonprofit, and public entities. Applicants must show long-term site control over the location and rights to the water source being used. If the applicant does not own the relevant dam or conduit, they must obtain a letter of support from the owner. Projects must be aligned with RPS eligibility and demonstrate cost-effectiveness as defined in the program’s RFP. Additionally, unless the facility is already RPS-qualified or the application is strictly for a conduit feasibility study, applicants must consult with the Massachusetts Division of Fisheries and Wildlife.

The application process involves submission of a written application via email to hydro@masscec.com. MassCEC may also request a site visit with their technical consultant. Key resources for applicants include the Energy Modeling Webinar and associated tools to help applicants calculate the incremental energy increase expected from their project.