Green Municipal Aggregation

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Also known as community choice electricity (CCE), this model allows MA & RI communities to take climate action by affordably greening up residents' electricity supply.

3 minute video: How it works

What Is GMA

Massachusetts and Rhode Island state laws allow a city or town to choose the electricity supplier for residents and businesses within that municipality. This is called municipal aggregation or community choice aggregation. It allows for important energy decisions to be made at the local level rather than by an investor-owned utility or by a for-profit competitive electricity supplier. 

Green Municipal Aggregation, or GMA, is a model we devised with energy broker Good Energy that adds more Class I or "new" renewable energy to residents' electricity at a competitive price. When a community decides to enact GMA, it goes out to bid for an electricity supplier and secures a long-term price and a cleaner electricity supply. That supplier replaces the utility's Basic Service, offers a more stable price (usually cheaper in the long run, too), and adds more renewable energy than required by state law.

 

How do I get my community involved?

If you’re interested in learning more about GMA or want to find out how your community can get started, contact Yaima@greenenergyconsumers.org

Here is a list of participating communities:

Name Renewable electricity (added by default) Supplier (what you'll see on your electric bill) Website
Arlington 11% Direct Energy Services arlingtoncca.com
Bedford 5% Dynegy bedfordcca.com
Brookline 30% Direct Energy Services brooklinegreen.com
Dedham 5% Public Power, LLC masscea.com/dedham
Fairhaven 10% Constellation New Energy masscea.com/fairhaven
Gloucester 5% Direct Energy Services gloucester-cea.com
Hamilton 5% Constellation New Energy hamiltoncca.com
Medford 5% Dynegy medfordcea.com
Melrose 5% NextEra melrose-cea.com
Millis 5% Constellation New Energy n/a
Rockland 5% Dynegy rockland-cea.com
Somerville 10% Direct Energy somervillecce.com
Stoneham 5% Constellation New Energy stonehamcea.com
Waltham 10% Direct Energy waltham-cea.com
Westford 10% Constellation New Energy masscea.com/westford/
Winchester 10% Dynegy winpowerma.com
       

 

 

Big progress in Rhode Island

Seven RI communities are making significant progress in their quest to implement Green Municipal Aggregation (also referred to as Community Choice Aggregation or CCA).

  • In May, the Rhode Island Public Utilities Commission (PUC) unanimously approved the first four aggregation plans in the Ocean State for Providence, Central Falls, Barrington, and South Kingstown. We expect the aggregation programs for these pioneers in Rhode Island to launch by early 2022.
  • In July, Portsmouth filed its plan with the PUC. We hope it will get approval before the end of the year so that it may also launch its program in early 2022.
  • Newport is currently finalizing its aggregation plan and we expect it will file with the PUC in early fall.
  • Narragansett has passed a resolution enabling aggregation and is currently exploring the development of an aggregation plan.
Watch Providence's excellent videos explaining GMA

Read: Green Municipal Aggregation in MA, 2nd edition (Feb 2020)

Green Energy Consumers' new paper explains the nuts and bolts of GMA and how a growing number of Massachusetts communities are using it to drive demand for new renewable energy sources.

Read the Massachusetts report