Program Details

Sudbury Community Electricity Aggregation (CEA)  is a program offered by the town of Sudbury to provide new electricity supply options and more renewable energy to Sudbury residents and businesses.

With Sudbury CEA, Eversource continues to deliver electricity and manage all electricity billing. The only change is the source and cost of electricity supply, chosen by the Town of Sudbury through a competitive bid process.

Product Choices

The aggregation program for Sudbury has been renewed for an additional term through late fall 2025. New pricing, shown below, will go into effect starting December 2023. The program’s supplier will transition from NextEra to Dynegy (also known as Vistra). All participants should have received a letter detailing renewal pricing and any necessary action items. To view these letters, visit our resources page here.

Most customers do not need to take any action to receive the new pricing. Customers currently in the community’s default “Sudbury Green” or optional “Sudbury Basic” products do not need to take any action to receive new pricing. However, due to requirements from the Department of Public Utilities, customers currently in “Sudbury Class I Green” product must affirmatively re-enroll or their accounts will be returned to Eversource Basic Service. You can enroll by contacting the supplier, Dynegy (also known as Vistra), at (866) 220-5696 or submitting a request through the enroll form here.

Sudbury CEA offers three choices for your electricity supply. The chart below describes these choices and compares them to current Basic Service electricity supply rates from Eversource.

Questions about the changes? Join a virtual info session on Nov 9, 2023 at 2pm or watch a recording here.

New Program prices starting December 2023 compared to utility prices

Sudbury Standard
(community default, formerly Sudbury Green)
Sudbury Basic Sudbury Plus
(formerly Sudbury Class I Green)
Eversource Basic Service
15.125 ¢/kWh
All Rate Classes
14.950 ¢/kWh
All Rate Classes
16.455 ¢/kWh
All Rate Classes
16.078 ¢/kWh
17.251 ¢/kWh
Adds National Wind RECs to total 100% renewable energy Meets the State required minimum Adds MA Class I RECs to total 100% renewable energy Meets the State required minimum
December 2023 through November 2025 July 2023 through December 2023 January 2024 through July 2024

MA Class I designation is that State of Massachusetts’ term for new, regional renewable energy. It must be built after 1997 and be located on or imported into the New England electricity grid. For additional detail, see

Sudbury Community Electricity Prices Until November 2023

Sudbury Green*
(community default)
Sudbury BasicSudbury Class I GreenEversource
Basic Service
100% Renewable (37% MA Class I, 63% National Wind) in addition to other State StandardsNo additional renewable energy (Meets state standards)
100% Renewable (100% MA Class I) in addition to other State StandardsNo additional renewable energy (Meets state standards)
10.712 ¢/kWh10.048 ¢/kWh13.805 ¢/kWh16.078 ¢/kWh
August 2020 through
November 2023
August 2020 through
November 2023
August 2020 through
November 2023
July 2023 through
November 2023
*Products described as Green contain renewable electricity above that required by Massachusetts. The additional renewable electricity qualifies for MA Class I designation.

Please note: Prices for all products in the program include a 0.1 ¢/kWh administration fee. Program prices apply only to the electricity supply portion of your electric bill. Delivery charges on your electric bill are not affected by the program.

For Commercial and Industrial Eversource Basic Service Rates please check out the Eversource supply rates page.

The Sudbury CEA program seeks to provide price stability and average savings over the duration of the program, however, because future Basic Service rates are not known beyond the months shown in the table above, there is no guarantee of savings.

How to Participate in Sudbury CEA

Most residents and businesses in Sudbury already participate in the Sudbury CEA program. If Eversource is still listed as your supplier, you may complete the enrollment form to sign up for Sudbury CEA. If a different supplier is listed, contact that supplier to check for penalties or termination fees that they may charge before you join the Sudbury CEA program.

Participation in the Sudbury CEA program is voluntary: you can leave the program at any time without fee or penalty.

The program will periodically send Customer Notification letters to new or newly eligible electricity customers, which include program details, information about product prices, and renewable energy certificates. Customers who receive this letter and do not choose to opt out will be automatically enrolled. To enroll sooner, use our online forms.

View Sudbury’s Opt-Out Letter

Massachusetts Power Information Disclosure Labels

Commercial & Industrial