NorthWestern Energy
NorthWestern Energy Insulation Rebate is available to homeowners in Billings, MT.
Rebate for qualifying insulation upgrades in existing homes served by NorthWestern Energy. Covers attic, wall, and basement insulation projects that meet minimum R-value requirements.
Rebate calculated at $0.15 per square foot up to maximum
Official program page checked live on 2026-06-22.
Data last verified 2026-05-25. How we verify our data.
In Billings, MT, you can combine this program with other local help to cut your cost:
A grant-savvy contractor in Billings, MT can handle the paperwork, inspections, and timelines so your funding releases on schedule. Getting matched is free.
This grant requires a licensed contractor
This grant requires the work to be done by a licensed contractor, and you will likely need a written estimate to apply. Get a free estimate from a contractor in Billings who knows grant paperwork.
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 rebate program
Ask us. It is free, and a real person answers within a business day.
Email us about this programUp to $500 rebate.
NorthWestern Energy Insulation Rebate is open to homeowners in Billings, MT. It has no income limit.
Apply directly with NorthWestern Energy using the official program link on this page or call (800) 823-5995. 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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