Solar cost calculator
Solar Panel Install cost estimator
Estimate the cost of a residential solar panel system — by system size, panel quality, and whether you add battery backup. Answer 4 quick questions and get a state-adjusted cost breakdown.
What type of solar setup?
Frequently asked questions
Don't forget the permit fee
Building permits for solar panel projects run anywhere from $80 in rural Tennessee to $1,500+ in San Francisco — see typical fees for every state.
People also ask about solar cost
Fact-checked, dated answers to the questions homeowners ask most often before pricing out a solar project.
- How much do solar panels cost to install?
- 8 kW solar system: $20K–$32K installed; $14K–$22K after 30% federal credit. Payback 7–11 yrs in high-rate states.
- Is solar worth it after the federal tax credit?
- 10 kW solar: $17K–$22K net after 30% credit. Payback 7–11 yrs in high-rate sunny states; 12–18 yrs elsewhere.
- How much is the solar tax credit in 2026?
- 25D solar tax credit: 30% of installed cost, no cap, through 2032. State rebates largely retired; battery storage still incentivized in CA/MA/NY.
- Should I add a battery (Tesla Powerwall, Enphase) to my solar?
- Battery $10K–$18K (30% federal credit applies). Worth it in poor-NEM states, frequent outages, or energy-independence goals.
State-specific solar cost guides
Long-form 2026 guides with metro-level labor rates, permit details, and budgeting tips — written specifically for 6 states.
Solar Buyer's Guide
Arizona Solar Export Rates (2026): APS, SRP, TEP & the RCP Annual Step-Down
Plain-English breakdown of how APS, SRP, and TEP compensate residential solar exports in 2026. Arizona ended retail-rate net metering in 2017 — each utility now uses its own export tariff with annual step-downs. Here's the math and the grandfathering rules.
Read the guide
Solar Buyer's Guide
Solar Net Metering in Florida (2026): FPL, Duke & Why 1:1 Retail Credits Still Work
Plain-English breakdown of Florida net metering in 2026. SB 1024 was vetoed in 2022, so FPL, Duke, TECO, and the munis still credit exported solar at the full retail rate — one of the strongest solar economics in the country. Here's the math + the grandfathering rule that protects you.
Read the guide
Solar Buyer's Guide
Solar Buyback in Texas (2026): ERCOT, Retail Plans & the Self-Consumption Math
Plain-English breakdown of Texas solar buyback in 2026. There's no statewide net metering — your payback hinges on which retail plan you pick (Octopus, Rhythm, Green Mountain, TXU) and whether you pair with a battery to dodge ERCOT's sunny-day price collapse.
Read the guide
Solar Buyer's Guide
NEM 3.0 Explained for California Homeowners (2026)
Plain-English breakdown of California's Net Energy Metering 3.0 — what changed in April 2023, how it cut new-solar payback from 6 years to 10-14, and the battery-pairing math that's the only way to get back to 7-year payback under the new rules.
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Cost Guide
Solar Panels Cost in Pennsylvania 2026
What a residential solar install actually costs in Pennsylvania in 2026 — typical 8 kW system pricing gross + after federal tax credit, the three biggest local cost drivers, and net-metering reality.
Read the guide
Cost Guide
Solar Panels Cost in Oregon 2026
What a residential solar install actually costs in Oregon in 2026 — typical 8 kW system pricing gross + after federal tax credit, the three biggest local cost drivers, and net-metering reality.
Read the guideMore on solar cost & decisions
Long-form 2026 guides on timelines, material comparisons, ROI, and financing for solar panel install projects.
Solar Buyer's Guide
What Nobody Tells You Before Getting Solar (2026 Reality Check)
The 9 inconvenient truths about residential solar in 2026 — net metering changes, roof-age gates, the resale tax penalty, inverter replacement cycle, and why your sales rep's '$0 down' math hides a 25-year debt obligation.
Financing
Contractor Financing Scams to Avoid in 2026 — The 9 Red Flags Homeowners Miss
The 9 contractor-financing scams that cost U.S. homeowners $1.4B in 2025: AOB form fraud, padded financing markups, unlicensed lender kickbacks, fake 0% APR cards, lien-and-bail schemes, and how to spot each before you sign.
ROI
Solar Panel ROI by State 2026 — When Do You Break Even?
Real 2026 solar-panel payback periods for every state. 8kW system cost, federal §25D 30% tax credit, state-specific net-metering rates, average utility savings, and the 14 states where solar still pays back in under 8 years.
ROI
Best Smart Thermostats for 2026 ROI — Real Payback by Model
An honest 2026 ranking of the best smart thermostats by real payback period. Installed cost, annual energy savings, federal tax credits, utility rebates, and which models actually fit older HVAC systems without expensive C-wire work.
Estimate the cost of a residential solar panel system — by system size, panel quality, and whether you add battery backup. Our 2026 solar cost model combines state-specific labor + materials data with a quality-tier multiplier and a 3-input scope wizard, so the band you see reflects YOUR specific project — not a national average. Most residential solar installs take 1–3 days on-site once permits and utility approval clear (typically 6–12 weeks total project timeline). Whatever you do, don't budget against a 2019-2021 number — 2022-2024 construction inflation was 18-30% and only partially mean-reverted.
How this calculator works
- What type of solar setup? — Pick from: Solar panels only, Solar + battery storage, Add battery to existing solar, Off-grid system. The choice maps to a specific cost band in our 2026 dataset.
- How big a system? — Pick from: Small (4–6 kW), Medium (8–10 kW), Large (12–15 kW). The choice maps to a specific cost band in our 2026 dataset.
- What quality tier? — Pick from: Budget, Mid-range, High-end. The choice maps to a specific cost band in our 2026 dataset.
- Pick your state — Solar Panel Install cost varies materially by state — California and New York run ~40% above the national base, midwest states ~15% below. Our state multiplier adjusts the 3-input base estimate to your local labor + materials market.
- Review the range, not a single number — 2026 solar pricing is too project-specific for a single number to be honest. We give you a low–high band that covers ~70% of realistic 2026 quotes for that scope in that state. Treat the midpoint as your planning anchor, the upper bound as your contingency floor.
When to use this vs. skip it
Pre-quote sanity check
Run this BEFORE the first contractor walks your property. Knowing the realistic 2026 range for your solar project (state-adjusted) keeps you from getting baseline-shifted on the first quote.
Comparing 2-3 written quotes
If one of your contractor quotes lands more than 25% above our state-adjusted band, request a line-item breakdown — that's almost always the gap between "fair" and "padded."
Budgeting a future solar project
Most homeowners budget against a 2019-2021 number they remember. 2022-2024 saw 18-30% labor and materials inflation. Run our numbers so your budget reflects 2026 reality.
Right-sizing a renovation loan
Borrowing too little forces emergency credit mid-project at 22-29% rates. Our estimate + your contingency (we recommend 15%) sizes the financing correctly the first time.
Common mistakes homeowners make
- ×Skipping: The 30% federal Residential Clean Energy Credit reduces your net cost — get a quote on both gross and post-credit pricing.
- ×Skipping: Microinverters cost ~10–15% more than string inverters but pay back via better shade tolerance and per-panel monitoring.
- ×Skipping: Add a battery later, not now, unless your utility has poor net-metering — battery payback periods are 12–20 years for most U.S. homeowners.
- ×Accepting the first contractor quote without 2-3 written comparisons.
- ×Forgetting the 10-15% contingency line — every 2026 solar project has at least one mid-job surprise.
- ×Underweighting the permit + inspection timeline; permits run in parallel with build.
Last updated · Reviewed by the HavenCostGuide methodology desk
Solar cost by state
See state-specific cost ranges and FAQs for solar panel install projects.