Solar in Billings: NorthWestern Energy and winter reality

Local market

Solar in Billings by the numbers

Metro population

190K

Typical cost per watt

$2.80

Paid lead cost

$85.00 to $160.00

Installer density

Low

Climate for solar

How much sun does Billings get?

Billings gets around 4.9 peak sun hours per day with 194 sunny days per year, strong for solar in the Northern Plains. Winter snow derating typically reduces annual production by 15 to 20 percent. Summer heat is less extreme than Phoenix; panel temperature coefficients matter but are less critical. Spring and summer hail is a secondary risk.

Who delivers power here

Utilities serving Billings

NorthWestern Energy, investor-owned, serves most of the Billings metro, Yellowstone Valley Electric Cooperative serves parts of surrounding Yellowstone County.

For how exports are credited and what the statewide rules look like, see the Montana solar market guide.

Permits and inspection

Pulling a residential solar permit in Billings

City of Billings Building Division typically runs residential solar permits in 2 to 4 weeks. SolarAPP+ is not accepted. Yellowstone County unincorporated areas run through the county with 2 to 4 week typical timelines. NorthWestern Energy interconnection post-install typically runs 4 to 6 weeks.

Running a solar company here

Running a solar company in Billings

Running a solar company in Billings means working in a small Northern Plains market with modest installer competition. The best Billings operators are explicit about winter snow derating in sales conversations, handle NorthWestern Energy interconnection fluently, and understand the long-distance rural logistics of Montana. Lead costs run $85 to $160 on Google search, low because installer density is thin.

Questions people ask

Solar in Billings: FAQ

Does NorthWestern Energy have net metering in Billings?

Yes, retail-rate net metering for residential solar systems up to 50 kW AC under Montana PSC rules. Credits accrue monthly at retail; annual true-up at year-end with excess typically zeroed out.

How long does a solar permit take in Billings?

City of Billings Building Division typically runs residential solar permits in 2 to 4 weeks. SolarAPP+ is not accepted. Yellowstone County unincorporated runs similar timelines. NorthWestern Energy interconnection post-install adds 4 to 6 weeks.

How much does solar cost in Billings?

Billings runs about $2.80 per watt installed for residential, meaning a 7 kW system typically costs around $19,600 gross. After the 30 percent federal tax credit and the modest Montana state tax credit, net cost is approximately $13,200.

Is solar worth it in Billings?

Yes for most Billings homes with suitable roofs. The combination of NorthWestern Energy retail NEM, moderate electric rates, and the 30 percent federal credit makes residential solar payback typically 11 to 14 years. Winter snow derating stretches payback; honest annual yield modelling matters.