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Solar PV · Montana

Solar Panel Cost in Montana (2026)

Planning-range installed cost for residential solar PV in Montana, adjusted for state labor multipliers and PVWatts production yield. 25D federal credit expired 2025-12-31; state and utility programs still apply.

Mid installed cost · 7 kW system · Montana

$22,176

Range $16,800–$30,240 gross

Cost basics

Mid $/W
$3.17
Range $/W
$2.40–$4.32
State labor multiplier
0.96×
PV specific yield
1400 kWh/kW/yr

Production & payback

7 kW annual production
9,800 kWh
Local electricity rate
$0.13/kWh
Annual bill displaced
$1,235/yr
Simple payback (mid)
18 yr

25D federal credit (30%) expired 2025-12-31. State and utility programs may shorten payback. Net-metering successor tariff (NEM 3.0 in CA, similar in HI, AZ, NY) reduces export value.

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