NorthWestern Energy Insulation Rebate

NorthWestern Energy

Available Weatherization

About This Program

Rebate for NorthWestern Energy customers who add insulation to attics, walls, or crawl spaces. Helps reduce heating and cooling costs by improving home energy efficiency.

Rebate based on insulation R-value and square footage installed

Official program page checked live on 2026-06-17.

Data last verified 2026-06-09. How we verify our data.

Key Details

  • Rebate up to $500 for added insulation
  • Available to NorthWestern Energy customers
  • Covers attic, wall, and crawl space insulation
  • Must meet minimum R-value requirements
  • Submit application within 90 days of installation

How to Apply

Get free help applying Visit Official Program Page Track this program

(888) 467-2669

A grant-savvy contractor in Anaconda, MT 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 Anaconda early keeps your application moving.

Get matched with a contractor

Each program sets its own contractor rules. Check the official program page for exact requirements.

Your application paperwork

Documents you will likely need

  • Proof you own and live in the home (deed, recent mortgage statement, or property tax bill).
  • A government-issued photo ID for every owner on title.
  • A written estimate from a licensed contractor for the work (many programs require this to apply).
  • A recent utility bill for the home (energy and weatherization programs use it to confirm service and usage).
  • Photos of the problem area or the work to be done.
  • The program's own application form, completed (use the official link or phone number on this page).
Download this checklist (PDF)

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: Applications accepted year-round

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