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.

The Sudbury CEA program launched in 2017 and as of Fall 2025 has collectively saved $9.2 million for the community, or $1,660 per average residential customer, compared to Eversource’s supply cost! Click here to enroll.

More Ways to Save! In addition to the supply options through the program, discounts are available for low income customers and customers with heat pumps. Learn more below.

Product Choices

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, which change every 6 months.

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 https://www.mass.gov/info-details/program-summaries.

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.

Sudbury Standard Performance

Future Eversource Residential rates are unknown. Eversource Basic Service supply prices can be found for residential customers here and for business customers here. Sudbury CEA rates remain fixed until December 2029.

MORE WAYS TO SAVE TODAY

• Opt-down to Sudbury Basic. Customers seeking greater financial relief can opt down to Sudbury Basic. Click here to enroll.
• Low-Income Discount: Eversource in Massachusetts provides a 42% discount to low-income customers that apply to the entire bill, including the cost of Sudbury CEA supply. Go to this page to enroll. 
• Heat Pump Discount Rate: Starting November 1, 2025, most electricity customers with heat pumps will receive a discount through Eversource’s ‘heat pump’ delivery rate. This discount applies only to the delivery portion of electric bills, so customers in this community’s aggregation program remain eligible and can enjoy added savings.
  • Key details:
    • Automatic enrollment: Customers with Mass Save®-supported heat pumps installed on or after Jan 1, 2019 will be automatically enrolled starting Nov 1, 2025 — no action needed.
    • Winter discount: Reduced delivery rates apply Nov 1 – Apr 30 each year.
    • Estimated savings: About $540 per winter (Mass. DPU).
    • No impact on supply: Only affects delivery charges; aggregation supply rates stay the same.
    • Non-heat-pump customers: Remain on standard delivery rates.
    • Enrollment notices: Will be sent prior to the November 1, 2025 enrollment date.
    • Manual enrollment: All other customers need to reach out to Eversource to enroll. 

Check Eversource’s heat pump rate page to find more information about signing up. For more information on heat pumps, check out this helpful FAQ from Mass Save.