Origins and performance

Municipal aggregation is allowed under Massachusetts General Laws Chapter 164 Section 134. More than 140 cities and towns in Massachusetts already have active electricity aggregation programs, and other nearby communities are pursuing similar programs. 

Program Background

By default, electricity customers in Brookline receive Basic Service electricity supply from Eversource. Under a municipal aggregation program, like Brookline Green Electricity (BGE), most customers receiving Basic Service are automatically transitioned to the aggregation’s standard option, unless they choose a different electricity option or choose to opt out (no penalty, ever!).

Brookline Green Electricity Implementation

In 2016, Town Meeting authorized the creation of the electricity aggregation program in Brookline with a goal of adding more renewable electricity to our electric mix. The Town then selected aggregation consultant, Good Energy, L.P., to assist with all aspects of program implementation. The Town developed a draft aggregation plan and subsequently solicited public comment. As required by law, the plan was reviewed with the MA Department of Energy Resources and then sent to the Department of Public Utilities (DPU) for approval. DPU approved the plan in the spring of 2017. 

Read the Brookline Green Electricity aggregation plan

Brookline conducted a competitive bid for electricity supply and secured a supply contract to start in the summer of 2017. Prior to the start of the program, Brookline conducted an education and outreach program to notify eligible residents and businesses about the program and their right to opt out. This effort included a letter and postcard mailed to every eligible customer, as well as public presentations, press releases, social media, and more.

Since the initial launch in July of 2017, BGE has entered into a second contract from January 2020 through December 2022 meter read, giving electricity ratepayers in Brookline four different options for electricity supply.

Historical performance data for BGE


This is a historical overview of the Brookline Green Electricity rates as compared to Eversource Basic Service for residential customers.

Note that future savings cannot be guaranteed because future Basic Service rates are unknown.


Brookline Green Electricity program enjoys a high level of participation from the town’s residents and businesses. Below is a graph showing the breakout of participants by the type of product they selected as of December 2020.

Participants can enter and leave the program without sign up fees or penalty.

Electricity customers who are currently enrolled with a third-party supplier may be subject to penalties or early termination fees from the third-party supplier if they switch to the electricity aggregation program during the term of their contract.