Electricity supplier: If you participate in Chelmsford Choice, Dynegy will appear on your National Grid electric bill as your electricity supplier from December 2023 forward. (Previously, Constellation was the program’s 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 Basic Service price, or use the online calculator to compare with National Grid’s most recent 12-month average price.
New prices coming soon: November 2023 – November 2025
Scroll down to see current program prices below this table.
|

(automatic enrollment) |

62% from new regional renewable energy resources (option) |

100% from new regional renewable energy resources** (option) |
National Grid’s
Basic Service
(if you opt out) |
Price |
14.843 ¢/kWh* |
16.415 ¢/kWh* |
17.849 ¢/kWh* |
18.213 ¢/kWh – residential
17.262 ¢/kWh – commercial
21.015 ¢/kWh – industrial |
Price period |
November 2023 – November 2025 |
November 2023 – November 2025 |
November 2023 – November 2025 |
November 1, 2023 – July 31, 2024, residential & commercial. November 1, 2023 – January 31, 2024, industrial. |
Renewable energy content
From new regional resources (MA Class I RECs) |
|
|
|
|
Added by Chelmsford |
– |
40% – 2023
40% – 2024
40% – 2025 |
78% – 2023
76% – 2024
73% – 2025 |
– |
Required by state law |
22% – 2023
24% – 2024
27% – 2025 |
22% – 2023
24% – 2024
27% – 2025 |
22% – 2023
24% – 2024
27% – 2025 |
22% – 2023
24% – 2024
27% – 2025 |
Total |
22% – 2023
24% – 2024
27% – 2025 |
62% – 2023
64% – 2024
67% – 2025 |
100% – 2023
100% – 2024
100% – 2025 |
22% – 2023
24% – 2024
27% – 2025 |
From other clean or renewable sources required by state law |
37% – 2023
38% – 2024
36% – 2025 |
37% – 2023
38% – 2024
36% – 2025 |
37% – 2023
38% – 2024
36% – 2025 |
37% – 2023
38% – 2024
36% – 2025 |
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. |
Current program prices through November 2023
|

(automatic enrollment) |

62% from new regional renewable energy resources (option) |

100% from new regional renewable energy resources** (option) |
National Grid’s
Basic Service
(if you opt out) |
Price |
10.042 ¢/kWh* |
11.484 ¢/kWh* |
13.015 ¢/kWh* |
18.213 ¢/kWh – residential
17.262 ¢/kWh – commercial
21.015 ¢/kWh – industrial |
Renewable energy content
From new regional resources (MA Class I RECs), added by Chelmsford |
– |
40% |
78% |
– |
From new regional resources (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, 2023 – July 31, 2024, residential & commercial. November 1, 2023 – January 31, 2024, 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 administrative 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 electric bill. Delivery charges on your National Grid electric 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 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 from other clean or renewable sources to meet state requirements. As a result, the total of the renewable content for Chelmsford Choice Greenest exceeds 100%.