NorthWestern Energy Window Rebate

NorthWestern Energy

Available Weatherization

About This Program

Rebates for ENERGY STAR certified window replacement projects. Rebate amount based on number of windows installed and energy efficiency ratings. Reduces heating costs in Montana's cold climate.

Rebate based on typical window replacement project for Montana home

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

Key Details

  • Up to $1,000 for ENERGY STAR window replacement
  • Rebate based on number and efficiency of windows
  • Must use qualified contractor
  • Pre-approval recommended
  • No income restrictions

How to Apply

A grant-savvy contractor in Lolo, 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 Lolo who knows grant paperwork.

Get matched with a contractor

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

Deadline: Ongoing program

Questions about this program?

Ask us. It is free, and a real person answers within a business day.

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Need a Contractor for This Grant?

Grant-approved contractors understand the documentation, inspections, and timelines, so your funding releases on schedule.

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