Energy Storage

Grid-scale batteries with wind and solar in background

Energy storage can improve the reliability, flexibility, and resiliency of the electric system, making it easier to integrate clean energy sources while delivering savings to ratepayers.

Energy Storage Studies

In 2023, DOER, in consultation with MassCEC, conducted a study on the existing energy storage market in the Commonwealth and the potential role of mid- and long-duration energy storage technologies. The study, Charging Forward: Energy Storage in a Net Zero Commonwealth, fulfilled a requirement of Section 80 of Chapter 179 of the Acts of 2022 (“An Act Driving Clean Energy and Offshore Wind”).

As part of the Massachusetts Department of Energy Resources’ Energy Storage Initiative, MassCEC and DOER in 2016 published State of Charge, a report examining the potential benefits of incorporating energy storage technologies into Massachusetts’ energy portfolio.  State of Charge provided a roadmap to the Commonwealth’s subsequent initiatives relating to energy storage, including Advancing Clean Energy Storage (ACES). 

Advancing Clean Energy Storage (ACES)

Man inside battery unit
Sean Hamilton, General Manager at the Sterling Municipal Light Department, inside the battery storage unit at the Chocksett Road Substation in Sterling, MA. Photo by Clean Energy Group, March 2017.

Building upon the insights of State of Charge, MassCEC launched the Advancing Commonwealth Energy Storage (ACES) program in 2017, originally funding 26 projects across the state, representing approximately 32 MW/83 MWh of proposed energy storage and approximately $31 million of applicant cost share.  The projects were selected to pilot innovative, broadly replicable energy storage use cases and business models with multiple value streams, with the goal of priming Massachusetts for increased commercialization and deployment of storage technologies.

Energy Storage Safety

Icon of person speaking on a computer screen

In collaboration with the National Fire Protection Association (NFPA), MassCEC developed a free, self-paced online training course for fire safety professionals covering

  • energy storage system applications, types, and terminology
  • basic electrical theory
  • introduction to battery energy storage systems
  • failure modes and hazards
  • EMS procedures

As of October 2022, over 500 Massachusetts fire professionals took the course, which is still open for enrollment.

This course built upon several sold-out energy storage fire safety trainings that NFPA previously facilitated and MassCEC sponsored in 2019.

Moon Island Training Site

In collaboration with the Boston Fire Department (BFD) and the City of Boston, MassCEC is supporting development of a solar plus storage system on Moon Island in Quincy, Massachusetts that will provide energy storage safety training to first responders.  The system will also enhance the energy security and independence of BFD’s Moon Island facilities. Moon Island serves as a training site for BFD and the corresponding agencies for 14 other towns and cities.

Map showing location of Moon Island in Boston Harbor
Aerial view of Moon Island