Montana Solar Estimate

Montana

Solar in Whitefish, Montana

A south-facing roof in Whitefish makes about 1,104 kWh per kW each year, 12% below the Montana average; a typical home's net-zero system here is about 9.8 kW, costs as low as $23,496 installed, and pays back in about 27 years on Flathead Electric Cooperative rates.

See the numbers for your Whitefish address

At a glance

Sunlight per kW
1,104
kWh a year, 12% below the Montana average
Typical system
9.8 kW
net zero for 900 kWh a month
Installed cost
as low as$23,496
up to $28,718
Payback
as low as24.3 yrs
24.3–31.2 yrs at 2.7%/yr

Typical gas-heated home, 900 kWh a month, best-case figures with the range shown. Sources.

Who sends your bill

At the center of Whitefish the service-territory layer shows Flathead Electric Cooperative. Boundaries are coarse at town edges, so your bill is the final word; the utility finder checks any address.

What the sun does in Whitefish

  • A south-facing roof at a 30° pitch makes about 1,150 kWh per kW a year before snow and 1,104 after a 4% snow allowance, 12% below the Montana average.
  • July is the best month at about 163 kWh per kW; December the worst at about 27. Net metering carries the summer surplus into winter, which is why the net-zero size and your utility’s bank reset month both matter.
  • Roof direction and pitch change the yield by a quarter or more; the estimate reads your actual roof from satellite imagery and fills south-facing planes first.
  • Electric heat roughly doubles a January bill compared with July, so a winter bill from an electrically heated house is annualized with a Montana heating profile rather than multiplied by twelve.

A typical Whitefish home: 900 kWh a month, gas heat

Net-zero system
9.8 kW
1104 kWh per kW per year
Installed cost
as low as$23,496
up to $28,718
First-year savings
up to$742
at least $651
Payback
as low as24.3 yrs
24.3–31.2 yrs at 2.7%/yr

Valued at Flathead Electric Cooperative rates (6.5¢/kWh energy); no federal credit for homes in 2026. Your roof, usage and heating change every number.

Questions Whitefish homeowners ask

How much do solar panels cost in Whitefish?
For a gas-heated home using about 900 kWh a month, a net-zero system of about 9.8 kW costs roughly $23,496 to $28,718 installed at current Montana cash prices, before any incentive. Larger homes and electric heat need bigger systems; your address gives a real figure in about a minute.
How long does solar take to pay for itself in Whitefish?
About 24.3 to 31.2 years for that typical home on Flathead Electric Cooperative rates, assuming electricity prices rise 2.7% a year. Flathead Electric Cooperative's own rules (fixed charge, demand charge, net-metering credits) are built in.
Which utility serves Whitefish?
At the city centre the service-territory layer shows Flathead Electric Cooperative. Boundaries are coarse at town edges, so your bill is the final word.
Does solar work in Whitefish's winters?
Yes, with a seasonal shape: July makes about 163 kWh per kW and December about 27, after a 4% allowance for snow cover. Net metering banks summer surplus against winter use, which is why the net-zero size and the bank's reset month both matter.
What incentives apply in 2026?
The 30% homeowner credit (Section 25D) ended for systems completed after December 31, 2025. Business-owned systems, including ranches and rental property, still qualify for the 30% investment credit and bonus depreciation when placed in service by the end of 2027; tax-exempt owners receive the 30% as cash. No Montana state credit. Not tax advice.

On the map

NorthWestern EnergyMontana-Dakota UtilitiesLincoln Electric CooperativeLower Yellowstone Rural Electric CooperativeMarias River Electric CooperativeMcCone Electric CooperativeMid-Yellowstone Electric CooperativeMissoula Electric CooperativeNorVal Electric CooperativeBeartooth Electric CooperativePark Electric CooperativeBig Flat Electric CooperativeSheridan Electric CooperativeBig Horn County Electric CooperativeSoutheast Electric CooperativeSun River Electric CooperativeTongue River Electric CooperativeCity of Troy ElectricMission Valley PowerYellowstone Valley Electric CooperativeFergus Electric CooperativeVigilante Electric CooperativeRavalli Electric CooperativeGlacier Electric CooperativeHill County Electric CooperativeFlathead Electric Cooperative
Whitefish (gold) and Flathead Electric Cooperative service territory. Hover a region to see its utility.

Nearby: Kalispell, Polson, Missoula, Cut Bank, Hamilton, Helena. All Montana cities.

Sources

Every figure on this page comes from the documents and models below, with the date each was produced or last checked.

  1. Sunlight and monthly production for Whitefish
    PVGIS 5.2 PVcalc, radiation_db PVGIS-NSRDB; 30° tilt, due south, 14% system losses; snow allowance applied by the engine (generated 2026-10-31)
    Effective October 31, 2026 · Checked October 31, 2026 · Read from the primary source
  2. Flathead Electric Cooperative rates and net-metering rules (worked example)
    Flathead Electric RES01 Residential Service, 17th revision (effective billing after Jun 1, 2026): $26.66 basic; 5.47c to 600 kWh, 6.44c to 3,500, 10.02c above; $4.93/kW time-of-day demand; USBP 0.1002c/kWh
    Effective June 1, 2026 · Checked November 1, 2026 · Read from the primary source
  3. Which utilities serve the area
    HIFLD Electric Retail Service Territories (U.S. DHS / Oak Ridge National Laboratory), Montana subset, 2020 vintage; coarse at town edges, city centres resolved with a tie-breaker
    Checked October 31, 2026 · Read from the primary source
  4. Installed cost, savings and payback
    Montana Solar Estimate engine: installed-cost ladder from SolarReviews, EnergySage and published Montana quotes (Oct 2026), 2.7%/yr rate escalation, 0.5%/yr degradation
    Checked November 1, 2026 · Read from the primary source

Spot an error? Email mtsolarestimate@gmail.com. How the estimate is built: methodology.

Your Whitefish address, your numbers

The estimate reads your roof, takes your real usage and applies your utility’s rules. About a minute, no contact details asked.