Solar panel prices are not the same everywhere. A 6kW system that costs one price in California can cost meaningfully less in Arizona for identical equipment — the difference comes down to local labor rates, permitting fees, installer competition, electricity prices, and the state and utility incentives available in each state.
This guide compares average solar costs across the most-searched US states, breaks the country into regions, and shows which states offer the fastest payback and the biggest 25-year savings — not just the lowest sticker price. Use the sortable table below to compare states directly, then jump to your region or state for the details.
Written by the SolarPanelCostCalculators team · Last updated August 2026
Solar Cost by State — Sortable Table
Click any column header to sort · 6kW system, 2026 estimates
| State ▲ | $/Watt ▲ | Gross Cost ▲ | Est. Net Cost* ▲ | Payback ▲ | 25-Yr Savings ▲ |
|---|
Why Solar Costs Differ by State Key Drivers
Average Solar Cost by Region Regional Breakdown
Grouping states by region highlights broad patterns — the South and West tend to have lower installed prices thanks to strong sunlight and competitive markets, while the Northeast has higher labor costs offset by strong incentives and electricity rates.
Cheapest States for Solar Lowest $/Watt
| State | Why It's Affordable |
|---|---|
| Arizona | Excellent sunlight hours, competitive installer market, low permitting friction |
| Nevada | Strong solar production and a growing, competitive installer base |
| Florida | High sunlight availability, sales and property tax exemptions on equipment |
| Texas | Lower labor costs and a competitive installer market keep prices down statewide |
Most Expensive States for Solar Highest $/Watt
New York, New Jersey, and Massachusetts carry the highest average installed prices, largely due to higher labor costs, denser permitting requirements, and more complex urban installations. That said, these same states often have high electricity rates and strong state-level incentives, which can offset the higher upfront price with a shorter payback period than the raw cost per watt would suggest.
Best States for Solar Savings Ranked by ROI
Best payback period
Hawaii → California → Massachusetts → New York — driven primarily by high local electricity rates.
Highest 25-year savings
Hawaii → California → Massachusetts → New York → New Jersey — a mix of high electricity rates and strong incentive stacking.
Best incentive stack
New York (state tax credit + NY-Sun) → Massachusetts (state credit + SREC) → New Jersey (TREC income) — all state-level programs, since the federal credit no longer applies to 2026 purchases.
Lowest install price
Arizona → Nevada → Florida → Texas.
For your complete personalized savings and ROI picture, use our Savings Calculator and Payback Calculator.
The Federal Solar Tax Credit Expired for 2026
The federal solar Investment Tax Credit (ITC) let homeowners who owned their solar system claim 30% of the total installed cost as a credit against their federal tax bill. It applied to panels, inverters, battery storage, and installation labor in every state — but the residential version of this credit (Section 25D) expired December 31, 2025, and no longer applies to systems placed in service in 2026, regardless of which state you live in.
This means the gross installed price is now closer to your actual out-of-pocket cost for a cash or loan purchase, unless your state offers its own separate credit or rebate. For current federal eligibility history and rules, see the U.S. Department of Energy's guide to the federal solar tax credit.
Use our Tax Credit Calculator to check what, if anything, you still qualify for at the state or utility level.
State Incentives (Top 10 States) Stack Your Savings
The federal credit is no longer available, but many states offer their own rebates, tax exemptions, and net metering programs. Click a state to see what's available:
- NEM 3.0 net metering for exporting excess power
- Self-Generation Incentive Program (SGIP) battery rebate
- Property tax exclusion on the added home value from solar
- Local utility rebates in some service areas (e.g. Austin Energy, CPS Energy)
- Property tax exemption on the added home value from solar
- No state income tax simplifies overall tax filing, though it no longer affects federal credit value since that credit has expired
See real pricing for Cypress, TX.
- Property tax exemption on 100% of the added home value
- Sales tax exemption on solar equipment purchases
- Net metering available statewide
See real pricing for Pensacola, FL.
- State tax credit of up to 25% of system cost (capped)
- NY-Sun Megawatt Block incentive in eligible utility territories
- Property tax abatement available in New York City
- State tax credit of 25% of system cost, up to a capped amount
- Sales tax exemption on solar equipment
- Property tax exemption on the added home value
- Net metering through the state's major utilities
- Property tax abatement on qualifying renewable energy systems
- Strong solar production reduces the system size needed
- Property tax exemption on renewable energy systems
- Sales and use tax exemption on solar equipment
- Utility-specific rebates in some service territories
- State tax credit of up to 15%, capped at a fixed dollar amount
- SREC-style solar credit income through the state's incentive program
- Property tax exemption on the added home value
- TREC (Transition Renewable Energy Certificate) ongoing income program
- Sales tax exemption on solar equipment
- Property tax exemption on the added home value
- Illinois Shines SREC program for ongoing solar credit income
- Net metering statewide
- Property and sales tax exemptions on solar equipment
To calculate your combined federal + state incentive savings, use our Tax Credit & Rebate Calculator. Incentive programs and caps change over time — always confirm current details with your state energy office or a local installer.
Example Calculation — California Walk-Through
| System size | 6 kW |
| Estimated gross cost | ≈ $16,380 |
| Federal tax credit | $0 — expired Dec 31, 2025 |
| Estimated net cost | ≈ $16,380 before state incentives |
In this example, a typical 6kW system in California costs about $16,380. Since the federal tax credit expired for 2026 purchases, that's now close to the actual out-of-pocket cost before any state-level incentives — California's NEM 3.0 net metering and the SGIP battery rebate covered in the State Incentives section can still reduce your effective cost. California's relatively high electricity rates mean this cost is often recovered faster than the raw price-per-watt figure would suggest — see the Payback Calculator for a personalized break-even estimate.
Other Factors That Affect Your Solar Cost Beyond Location
State averages are a useful benchmark, but your actual quote also depends on factors specific to your home:
- Roof size. Larger roofs generally support larger, more efficient array layouts, which can lower cost per watt.
- Roof angle. Roofs closer to the optimal tilt for your latitude capture more sunlight per panel, sometimes reducing the number of panels needed.
- Shading. Trees or nearby structures that shade part of your roof may require additional panels or micro-inverters to compensate.
- Battery storage. Adding a battery increases upfront cost — check whether your state offers a battery-specific rebate, since the federal credit that used to apply no longer does for 2026 purchases.
- Panel efficiency. Higher-efficiency panels cost more per panel but need fewer of them to hit the same output.
- Installation company. Pricing, warranty terms, and included services vary meaningfully between installers even within the same state.
- Local permits. Permit and inspection fees vary by city and county, sometimes by hundreds of dollars.
To get a number specific to your home rather than a state average, use our Solar Panel Cost Calculator.
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