Your options

Chelmsford Choice offers three Town-vetted electricity alternatives to National Grid’s Basic Service and to other electricity supply offers in the marketplace. As a new participant in Chelmsford Choice, you will be automatically enrolled in Chelmsford Choice Basic. If you would like more of your electricity from clean, renewable sources like the sun and wind, you can choose from two additional choices:

  • The Chelmsford Choice Greener option provides a total of 62% of your electricity from “premium” renewable energy sources in the New England region
  • The Chelmsford Choice Greenest option provides 100% of your electricity from “premium” renewable energy sources in the New England region

The Commonwealth of Massachusetts requires that all electricity supply products include a minimum of 59.2% from renewable energy resources in 2023. Chelmsford Choice Basic meets the minimum requirement. Chelmsford Choice Greener and Chelmsford Choice Greenest exceed it.

Electricity supplier: If you participate in Chelmsford Choice, you will see Constellation listed on your National Grid electricity bill as your electricity supplier. View an example National Grid bill.

Electricity mix: The program’s electricity supplier is required to provide an energy mix disclosure label that offers details about all of the sources of electricity provided. Visit the Resources page to download the most recent label.

Compare prices: Use the tables below to compare Chelmsford Choice prices with National Grid’s current 6-month Basic Service price, or use the online calculator to compare with National Grid’s most recent 12-month average price.


(automatic enrollment)
62% premium renewable energy from New England (option)
100% premium renewable energy from New England** (option)		 National Grid’s
Basic Service
(if you opt out)
Price 10.042 ¢/kWh* 11.484 ¢/kWh* 13.015 ¢/kWh* 33.891 ¢/kWh – residential
32.287 ¢/kWh – commercial
22.295 ¢/kWh – industrial
Renewable energy content

Premium renewable energy resources in the New England region (MA Class I RECs), added by Chelmsford		 – 40% 78% –
Premium renewable energy resources in the New England region (MA Class I RECs), required by state law 22% 22% 22% 22%
Additional renewable or clean energy, required by state law 37.2% 37.2% 37.2% 37.2%
Price period Enrollment – November 2023 Enrollment – November 2023 Enrollment – November 2023 November 1, 2022 – April 30, 2023, residential & commercial. February 1, 2023 – April 30, 2023, industrial.
Exit terms Leave any time.
No exit charge.		 Leave any time.
No exit charge.		 Leave any time.
No exit charge.		 Leave any time. No exit charge. However, industrial customers only (rates G-2 and G-3) on the fixed-price Basic Service option may receive a billing adjustment, which may be either a credit or a charge.

* Prices include a $0.001 /kWh administration fee. Program prices could increase as a result of a change in law that results in a direct, material increase in costs during the term of the electricity supply agreement. Program prices apply only to the electricity supply portion of your National Grid electricity bill. Delivery charges on your National Grid electricity bill are not affected by participation in Chelmsford Choice. Some large commercial accounts may not be eligible for program pricing at the time of enrollment and may instead be offered market pricing. Visit the FAQ page for more information.

** Chelmsford Choice Greenest is a 100% MA Class I offering, which means it includes the the minimum amount of MA Class I RECs required by law each year plus the additional amount needed to reach 100%. Chelmsford’s electricity supplier must also purchase other renewable energy to meet state requirements. As a result, the total of the renewable amount for Chelmsford Choice Greenest exceeds 100%.