Reduce Your Home Energy Use with an Energy Audit Starting at Just $50
Through the Big Sky Energy Audit Program, Big Sky community members can access an affordable, professional whole-home energy audit to boost comfort, improve indoor air quality, and save money on utility bills.
NOTICE: These rebates are available for installations completed by the end of 2025.
Federal tax credits are available for energy‑saving home improvements such as insulation, HVAC systems, windows, doors, electrical panel upgrades, and renewable energy systems like solar. Homeowners, and in some cases renters, may qualify.
How to Apply: Check that what you are planning to install qualifies for the tax credit. Save receipts and product certification statements. File the appropriate IRS form with your tax return for the year the improvement was placed in service.
NorthWestern Energy offers customers a variety of rebates for improving home energy efficiency. These include, but are not limited to, heat pumps, heat pump water heaters, air purifiers, insulation, and smart thermostats.
How to Apply: If you are a NorthWestern Energy customer, you can apply by filling out the rebate form after installing your qualifying product. Be sure to keep invoices, product model numbers, and proof of installation
NorthWestern Energy offers a $3,000 rebate for qualified installs of heat pump water heaters. IMPORTANT: This rebate is distributed directly through a NorthWestern Energy-approved plumber. If you do not work with an approved plumber, you will not receive the rebate.
GRTF Indoor Rebates
Cash rebates for water-saving, energy-efficient indoor upgrades like washers, urinals, toilets, and faucets, and toilets.
GRTF Outdoor Rebates
Rebates for water-saving outdoor upgrades like smart irrigation systems and drought-tolerant landscaping.
How to Apply: If you are a Big Sky Community Member, you can apply by filling out the rebate form after installing your qualifying product. Be sure to keep invoices, product model numbers, and proof of installation.
Provides free weatherization services for income‑eligible households—may include energy audits, insulation, air sealing, ventilation, and HVAC/health & safety upgrades.
How to Apply: Visit the HRDC Weatherization Assistance Program to check income guidelines and see if you qualify for assistance
Eligible technologies: solar PV, solar thermal, wind, micro-hydro, geothermal, certified pellet/wood stoves.
The Alternative Energy Revolving Loan Program (AERLP) provides zero-down, low-interest loans of up to $40,000 to individuals, small businesses, nonprofit organizations, and government entities in order to increase investments in alternative energy systems and energy conservation measures in Montana.
The program, which is managed by the Montana Department of Environmental Quality’s Energy Office, has financed more than 500 renewable energy installations across the state since its first loan in 2003 for an off-grid solar array in Belt. Eligible technologies include solar PV, solar thermal, geothermal, EPA-certified low-emission pellet or wood stoves, wind, and micro-hydro. Energy conservation measures may be included in a loan when installed in conjunction with an alternative energy system.
C‑PACE provides long‑term, low‑cost financing for renewable energy, energy efficiency, and resilience projects. Financing is repaid via a voluntary assessment on the property tax bill.
GRTF Indoor Rebates
Cash rebates for water-saving, energy-efficient indoor upgrades like washers, urinals, toilets, and faucets, and toilets.
GRTF Outdoor Rebates
Rebates for water-saving outdoor upgrades like smart irrigation systems and drought-tolerant landscaping.
How to Apply: If you are a Big Sky Community Member, you can apply by filling out the rebate form after installing your qualifying product. Be sure to keep invoices, product model numbers, and proof of installation.
NorthWestern Energy offers businesses a variety of rebates to improve energy efficiency and reduce operating costs. Rebates are available for upgrades such as high-efficiency lighting, HVAC systems, refrigeration, commercial kitchen equipment, building envelope improvements, and more.
How to Apply: If your business is a NorthWestern Energy customer, you can apply by submitting rebate applications after completing your qualifying project. Be sure to keep all invoices, product model numbers, and proof of installation.
Building owners who install new equipment aimed at improving the energy efficiency of their properties may be able to claim a tax deduction to offset some of the costs of the equipment.
