Opt up to 100% Green Plus or change to Standard Green

You can use the form below if you will be automatically enrolled, or are already enrolled, in the Cambridge Community Electricity Program and want to:

  • Opt up from Standard Green to 100% Green Plus – 13.669 ¢/kWh
  • Change from 100% Green Plus to Standard Green – 10.20 ¢/kWh

Or you may call customer support with the City’s program consultants at 1-844-379-9934.

Please note that it may take up to two billing cycles for the change to appear on your bill, as changes can only be made at the start of a billing cycle.

Be sure to use the name on the account and the account service address when completing the form.
If the account is under the name of the business, please use the First Name and Last Name fields to enter the business name as it appears on your bill.


Combined Form 2023
Enter 11 digit account number with no spaces, dashes, letters, or other characters
Enter 10 digit account number with no spaces, dashes, letters, or other characters
Your name key is listed on your National Grid bill, but it is not labelled. To find it, 1) look in the blue left column of your bill, 2) locate the Enrollment Information section, and 3) find the word "Cycle." Your name key is listed after your cycle number in capital letters. Your name key is typically the first 4 letters of the last name on a residential account, or the first 4 letters of a commercial account name.

Your name key can be found on the second page of your Eversource bill, directly beneath your account number. Your name key is typically the first 4 letters of the last name on a residential account, or the first 4 letters of a commercial account name.

Account type
Medium and large commercial or industrial customers interested in enrolling should contact customer support to verify account eligibility.
Can be found on the second page of your Eversource electricity bill, just below your address in the blue box

Please include an email address to receive a receipt of this request for your records
Please include the phone number we should use if we need to contact you about this request