1-413-589-0141 mmwec@mmwec.org Ludlow, MA

Bringing a competitive edge to Massachusetts municipal utilities

The Massachusetts Municipal Wholesale Electric Company (MMWEC) brings a competitive edge to Massachusetts municipal utilities dedicated to providing their customers with low-cost and reliable electricity. We plan, develop and manage energy resources in an evolving marketplace that requires high levels of innovation and expertise. Our values are old-fashioned, reflecting more than 48 years of public power joint action, but our service is enlightened.

Innovative Battery Storage Project:

The Sterling Municipal Light Department’s innovative battery storage project, the first of its kind in the region, is featured in this video.

2023 MMWEC Annual Report: Powering Sustainable Communities Through Joint Action

MMWEC’s 2023 Annual Report showcases the many ways in which MMWEC and its Members are working together through joint action to decarbonize and electrify, in alignment with the goal of net zero carbon emissions by 2050. 

Read the report here …

Generation asset development and operation

MMWEC’s largest generation asset is the Stony Brook Energy Center, located on the site of MMWEC’s corporate headquarters in Ludlow, MA. In addition to being a valuable resource for the 25 Massachusetts municipal utilities and six Vermont utilities that are Stony Brook Project Participants, Stony Brook is a unique and valuable asset for ISO New England. 

MMWEC's Stony Brook Power Plant in Ludlow, MA

Renewable resources for the future

MMWEC Members and Project Participants have invested in a variety of carbon-free and renewable energy resources, including solar, wind, hydro and battery storage. Members’ power portfolios are nearly 50% carbon-free, and Members continue to seek new opportunities in clean energy procurement. Read more here …


MMWEC Recognized for Annual Report

Read it HERE

MMWEC Public Power Awareness Campaign

Project 2015A

To learn more about the capacity reliability resource being built in Peabody, MA, please visit the Project 2015A website

In the News

MMWEC Seeks Data about Exorbitant Mystic/Everett Charges

Click HERE for more information.

Power Market, Solutions to complex challenges

MMWEC is the only full-service agency equipped to manage municipal utility interests in the increasingly challenging wholesale power market. From wholesale market compliance and bidding loads and resources, to invoice management and capturing market opportunities, MMWEC offers a wide scope of wholesale market solutions. Read more here …

Financial options and risk management

MMWEC provides an expansive range of financial expertise and services to help its Members and Project Participants manage their financial affairs and risk exposures. Services include tax-exempt financing and project/contract oversight for MMWEC’s ownership of approximately 700 megawatts in four New England power plants. Read more here …

Legislative and Regulatory Oversight

MMWEC represents its Members in regulatory and legislative matters, protecting their interests and the public power business model. Staff work directly with various government and regulatory agencies to influence policy and regulations affecting municipal utilities. Read more here …