WY · Solar

Solar quotes in Casper, WY.

One real quote from a vetted local Casper installer, sized to your roof, your bill, and every federal + state rebate you qualify for.

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One vetted local Casper installer
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8 kW
Average system size: $2.85/W
Average cost (USD): 14 yrs
Average payback: 15+
Local installers

Why solar in Casper

Wyoming requires net metering of every kind of electricity provider, which sounds like a technicality and is not. Investor-owned utilities, rural cooperatives and municipal providers must all offer it for residential systems up to 25 kW. In most states the requirement reaches only the investor-owned utilities, which is why a homeowner elsewhere has to establish who bills them before trusting any figure. In Casper that particular uncertainty largely does not arise.

Why the breadth is unusual

Wyoming law requires utility companies, including investor-owned utilities, rural cooperatives and municipal providers, to offer net metering for residential systems up to 25 kW.

Compare that with Kansas, where the requirement covers the investor-owned utilities and leaves cooperatives and municipals to set their own terms. Or Oklahoma, or Mississippi, or Alabama, where the same gap exists.

In those states a homeowner on a cooperative can find that none of the published state guidance applies to them. Wyoming largely closes that gap.

So a Wyoming homeowner starts from a firmer position than most: whoever serves your address, the obligation to offer net metering to 25 kW applies.

What still varies between utilities

A requirement to offer net metering is not a requirement to offer identical terms. Rates, netting bases, credit treatment and interconnection processes can still differ.

Ask your utility how excess generation is credited and at what rate, whether generation is netted across a billing period, and whether credits carry forward or expire.

Ask what the interconnection application involves, what it costs and how long approval takes.

Ask what fixed monthly charges apply, since those differ between utilities and, as the Rocky Mountain Power basic charge of $24.24 per month shows, they can be substantial.

Then the two numbers that decide it

How much your system produces, and what each kilowatt hour is worth to you. With no tax credit at either level, those two carry the entire case.

Ask for the production estimate in kilowatt hours per year with the data source named, location-specific irradiance for your address, a stated snow allowance and annual degradation.

Ask which energy rate the projection used and check it against your bill, and confirm that fixed charges were left untouched rather than treated as reducible.

Ask to see the projection at zero rate escalation. With nothing in the incentive column, the escalator is the main remaining lever to improve a headline figure.

What the projection actually rests on

The 30 percent federal Residential Clean Energy Credit under Section 25D expired for property placed in service after December 31, 2025, so a cash or loan purchase in Casper receives no federal tax credit, and Wyoming has no state solar tax credit.

Section 48E survives at 30 percent for third-party owners under leases and power purchase agreements, so ask what a provider claims and what reaches you in the rate.

What exists is net metering to 25 kW required of every utility type, on terms that still vary between them, and the electricity you stop buying.

Ask for your utility specific terms in writing, then for the projection built on them with fixed charges left untouched.

Incentives & rebates

Net metering: Net metering required of all utility types to 25 kW

Wyoming requires net metering of every kind of electricity provider. Investor-owned utilities such as Rocky Mountain Power, rural electric cooperatives and municipal providers must all offer it for residential solar systems up to 25 kW. That is worth stating because it is genuinely unusual. Across the states covered on this site, the recurring caution is that a statutory requirement reaches only the investor-owned utilities while cooperatives and municipals set their own terms, which is why so many pages tell readers to check who bills them before trusting a figure. Wyoming largely removes that problem: whoever serves your address, the obligation applies. The individual system capacity limit of 25 kW is comfortably above what a household would install, so it rarely constrains a design. What deserves more attention is the fixed side of the bill. The Rocky Mountain Power January 2026 tariff carries a basic charge of $24.24 per month alongside a flat energy rate of 12.175 cents per kWh under Schedule 2. Roughly $291 a year of that bill is not about kilowatt hours at all and does not fall as your consumption does. A solar system reduces the energy portion of your bill; it does not touch the basic charge. So a projection that models savings as a percentage of your current bill will overstate the result, sometimes substantially, and the correct approach is to model avoided kilowatt hours at the energy rate and leave fixed charges untouched.

Related Wyoming resources

Wyoming solar incentives & rebates Full breakdown of federal, provincial, and utility programs.

How payback works in Wyoming

System cost: $22,800
Estimated net cost: $22,800
Estimated payback: ~14.1 years
25-year net savings: ~$17,700

These figures are illustrative; your actual quote reflects your roof, sun exposure, and local utility rates.

Frequently asked questions

Do Wyoming cooperatives have to offer net metering?

Yes. Wyoming law requires investor-owned utilities, rural cooperatives and municipal providers alike to offer net metering for residential systems up to 25 kW, which is unusually broad. Most states require it only of investor-owned utilities.

Does that mean all utilities offer the same terms?

No. A requirement to offer net metering is not a requirement to offer identical terms. Rates, netting bases, credit treatment, interconnection processes and fixed monthly charges can still differ between utilities.

What should I ask my utility?

How excess generation is credited and at what rate, whether generation is netted across a billing period, whether credits carry forward or expire, what interconnection involves and costs, and what fixed monthly charges apply.

What carries the case in Wyoming?

Production multiplied by value, since there is no tax credit at either level. Ask for production in kilowatt hours with a stated snow allowance and degradation, and the energy rate checked against your bill with fixed charges left untouched.