Tax exempt accounts

Tax exempt accounts that wish to maintain their tax exempt status in the Sutton Power Choice program must submit tax exemption documentation to the program’s electricity supplier.

This means that tax exemption documentation must be submitted each time the program’s electricity supplier changes.

The program’s electricity supplier is required by the State of Massachusetts to have valid tax exemption documentation on hand for all tax exempt accounts.

You may have submitted tax exemption documentation to National Grid already, but National Grid does not share this documentation with the program’s electricity supplier. It is the customer’s responsibility to submit this documentation.


Send to Constellation via email at or via fax at 877-243-4968

Send a copy to the Town’s program consultants via email at or via US mail at MassPowerChoice, ATTN: Tax exemption documentation, 85 Merrimac Street, 3rd Floor, Boston, MA  02114

Agera Energy

Via email: To Agera at with a copy to the Town’s program consultants at

Via regular mail: to Agera Energy, LLC, Attn: Tax Department, 555 Pleasantville Road, S107, Briarcliff Manor, NY 10510, with a copy to the City’s program team at MassPowerChoice, 85 Merrimac Street, Boston, MA  02114.