Eversource (Mass Save)
Eversource Energy Storage Adder is available to homeowners in Waltham, MA.
Additional incentive for battery storage systems installed with solar panels in Eversource territory. Provides adder payment on top of SMART solar incentive program.
Additional incentive on top of solar SMART program
Official program page checked live on 2026-06-22.
Data last verified 2026-06-09. How we verify our data.
In Waltham, MA, you can combine this program with other local help to cut your cost:
A grant-savvy contractor in Waltham, MA can handle the paperwork, inspections, and timelines so your funding releases on schedule. Getting matched is free.
You will likely need a contractor to apply
Projects like this almost always need a licensed contractor, and many grants ask for a written estimate as part of your application. Lining up a contractor in Waltham early keeps your application moving.
Get matched with a contractorEach program sets its own contractor rules. Check the official program page for exact requirements.
Documents you will likely need
Requirements vary by program and locality. Confirm the exact rules on the official program page. We can help you prepare your paperwork, but you submit it yourself.
Deadline: Ongoing with solar installation
Ask us. It is free, and a real person answers within a business day.
Email us about this programUp to $1,000 per battery.
Eversource Energy Storage Adder is open to homeowners in Waltham, MA. It has no income limit.
Apply directly with Eversource (Mass Save) using the official program link on this page or call (800) 592-2000. There is no middleman and no fee.
Grant-approved contractors understand the documentation, inspections, and timelines, so your funding releases on schedule.
Rebates and discounts that stack on top of any grant. Most are free to use.
This is just one of many grants, rebates, and free programs available. Stack them together to maximize your savings.
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