Tax-exempt accounts

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

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.

Tax exemption documentation must be submitted each time the program’s electricity supplier changes.

The electricity supplier for Webster PowerUp is Dynegy.

Where to submit your forms

Please be sure to write your National Grid electricity account number(s) on all documentation submitted.

Via email:

Send to Dynegy: Salestax_geotax@vistraenergy.com
Send a copy to the Town’s program consultants: webster@masspowerchoice.com

Via US mail:

Dynegy
Attn: Customer Care
P.O. Box 650764
Dallas, TX 75265

With a copy to the Town’s program consultants:

MassPowerChoice
ATTN: Tax exemption documentation
85 Merrimac Street, 3rd Floor
Boston, MA 02114