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Solar · FAQ

Solar FAQ

Most solar decisions in 2026 come down to four questions: cash price per watt, whether anyone is still quoting a dead federal credit, realistic payback under your utility’s rules, and who actually installs and warranties the work. EnergySage’s 2026 data averages about $2.60 per watt and roughly $31,135 for a typical ~12 kW quote. The IRS states the Section 25D residential credit is not allowed for expenditures made after December 31, 2025.

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40 questions answered

The three questions homeowners ask first

Answered in full here so you do not have to hunt. Everything else is grouped below.

How much do solar panels cost in 2026?

EnergySage’s 2026 marketplace data averages about $2.60 per watt before incentives, with a typical quoted system around 12 kW at $31,135 and most quotes roughly $27,526-$33,869. Divide total price by system watts to compare companies. Door-to-door quotes can run higher for similar hardware because of sales overhead.

Is the federal solar tax credit still available in 2026?

Not for systems you buy. The IRS states the Section 25D Residential Clean Energy Credit is not allowed for expenditures made after December 31, 2025, and treats an expenditure as made when installation is completed. A third party that owns a leased system may still claim a commercial credit - but you do not claim 30% on your personal return for a purchased 2026 install.

How long until solar pays for itself?

EnergySage reports an average payback of about 10 years across its marketplace, with 25-year savings estimates spanning roughly $41,000 to $155,000 - an enormous spread driven by your utility rates and export rules, not panel brand. Cheap electricity or weak export credit can mean payback never arrives.

This page answers the cross-cutting solar questions that do not belong on a single service page - dealer fees, escalators, orphaned systems, and sales tactics. Where a deeper page already owns the answer, we point there instead of restating it.

Three patterns cause most bad outcomes: signing at the kitchen table for a same-day discount, comparing monthly payments instead of cash $/W, and installing on a roof that needs replacement in a few years. None of those require engineering knowledge to avoid.

Numbers below use 2026 published ranges. Your roof, utility export rules, and electrical panel still move the number - three normalized quotes beat any national average. See our solar cost guide.

This page answers 40 real homeowner questions about solar, grouped so you can skip to the stage you are in.

By topic

Cost and pricing

Each answer is self-contained. Where a deeper page exists, the last sentence links to it.

EnergySage’s 2026 quote data averages about $1,128 per kWh installed, putting a 13.5 kWh battery near $15,228 before state or local incentives. A battery rarely pays for itself on bill savings alone - buy for backup or a rate structure that truly rewards storage.
Sales channel overhead, roof complexity, electrical upgrades, battery bundling, or a dealer fee baked into a financed price. Normalize to $/W cash price for solar-only scope. If one bid is $2.60/W and another is $4.20/W for similar equipment, the gap is often commission, not quality.
A charge the installer pays the lender to offer a below-market interest rate, then adds to your system price - often thousands of dollars and not itemized. Ask for cash price and financed price side by side; the difference reveals the fee.
No. Ask for solar-only and solar-plus-battery prices separately. If the installer will not split them, the battery may be padding the deal. Grid-tied solar without a battery still shuts down in an outage for utility worker safety.
Cash is usually cheapest over the system’s life. Loans are common but must be judged on total interest and dealer fees, not monthly payment. Leases and PPAs mean you do not own the asset - different product entirely. See solar financing.
Often yes, and they vary widely. Federal 25D for purchased residential systems is gone for post-2025 completions per IRS guidance. Check DSIRE for your zip code and confirm program rules yourself - do not trust only the sales deck.

Hiring and quotes

At least three, including at least one local installer. National brands often subcontract the crew - check the installing company’s license and reviews, not just the brand on the proposal.
System size in kW, cash total and $/W, panel and inverter model numbers, battery model if any, production estimate assumptions, all three warranty documents, who pulls permits and files interconnection, roof penetration workmanship terms, and full financing terms if used. See solar services.
No. Same-day discounts are a sales technique. A genuine price is still there in a week. Kitchen-table pressure is one of the most reliable predictors of buyer regret in this industry.
Ask for the installing company’s legal name. Many national sales organizations subcontract. Verify that entity’s license and insurance. Workmanship warranties are only as good as the company that wrote them.
It depends on whether the contract guarantees production and what assumptions were disclosed (shading, weather, utility rates). Document actual production from monitoring, then read the performance and workmanship warranties. Many “estimates” are not guarantees.
Not automatically - a third-party owner may still access commercial tax benefits and pass some value into the payment. But you own nothing, escalators can erode savings, and transfer clauses matter when you sell. Read the full term, not the first-year payment.

The work itself

Physical install on a typical home is usually days. Full timeline from contract to switched-on is driven by permitting and utility interconnection, which vary enormously by jurisdiction and utility. Permission to operate is often the longest step.
If the roof is near end of life, replace it before installing. Panels last decades; paying to remove and reinstall later is a common, avoidable expense. Get removal/reinstall pricing in writing even if you install now.
Microinverters generally handle shading and mixed orientations better and give per-panel data; string inverters are simpler and often cheaper but a single point of failure. Match the choice to your roof and compare written warranty terms on the exact models quoted.
Only if roof space limits system size. If you have room, a larger array of standard panels often costs less for the same annual kWh. Do not pay a large efficiency premium without a space constraint.
Properly flashed mounts should not. Leaks come from bad workmanship at penetrations. Installer workmanship warranty and flashing method matter more than panel brand for roof risk.
The utility’s final approval to switch on a grid-tied system after local inspection and interconnection paperwork. Passing city inspection alone is not PTO. Do not energize early.

Problems and emergencies

Shading growth, dirt, inverter faults, monitoring gaps, weather variance, or an optimistic sales estimate. Check the monitoring app first, then call the installer with dates and screenshots. Compare against the proposal’s assumptions, not a round marketing number.
Not with standard grid-tied solar alone - systems shut down for utility worker safety. Backup requires a battery and the correct inverter configuration. If outage backup is your goal, size the battery to specific circuits and hours.
Manufacturer product and performance warranties usually follow the equipment; workmanship warranties often die with the company. Independent solar repair firms service orphaned systems in most metros for a fee. Prefer manufacturer-hosted monitoring when possible.
Some jurisdictions allow owner-builder permits, but you still need code-compliant electrical work, inspection, and utility interconnection. Mistakes affect insurance and the roof. For most homeowners this is a poor DIY project.
Start with the installer’s workmanship warranty for penetrations, and document with photos. If the installer is gone, a roofer experienced with solar mounts and a solar service firm may both be needed. Do not ignore active leaks.

After the job, warranty and maintenance

Three separate ones: manufacturer product, manufacturer performance (minimum output over time), and installer workmanship (labor and roof penetrations). Get all three PDFs before signing. They have different lengths and different companies behind them. See solar warranties.
Often not fully. A free replacement part with a billable service call is a weaker warranty than it sounds. Ask specifically who pays labor and equipment rental for a swap in year eight.
Usually little beyond occasional cleaning where dust or pollen is heavy, keeping monitoring active, and vegetation management for shading. Check manufacturer guidance for your model. See solar maintenance.
Owned systems generally help; leased systems and PPAs must transfer to a qualified buyer and can complicate closing. If you may move, read the transfer and buyout clauses before you sign - not when you list.
A loan is normally yours to pay off, often at closing. A lease or PPA must be assumed or bought out under the contract terms. Ask the lender or lessor for the payoff and transfer process in writing before listing.

Uncomfortable questions worth asking

No. Projections use utility rate assumptions and escalators chosen to sell. Ask for the kWh production estimate, the rate assumptions, and a sensitivity if rates grow slower. Verify export rules with your utility, not the sales deck.
Sales overhead, dealer fees on financing, battery bundling, electrical upgrades, and warranty packaging. Compare cash $/W and model numbers, not brand slogans.
It depends on the contract and state law. Many keep costs already incurred; some in-home sales have cooling-off rights. Read cancellation terms before you sign, and beware large deposits before permits clear.
You can refuse. Require written change orders with price before any added work. Mid-process upsells are common once you are emotionally committed to a start date.
No for a system you buy with installation completed after December 31, 2025, per IRS guidance on Section 25D. Treat that math as a red flag and reprice on cash cost.
Honest limits

Questions where the honest answer is “it depends”

Jurisdiction, policy and house-specific questions. We give you the procedure for finding out, not a confident national guess.

What permits does my solar job need?

Almost always a local building/electrical permit plus utility interconnection, but exact forms, fees, and timelines are set by your AHJ and utility. Call both. Some jurisdictions use SolarAPP+ for faster permitting - ask whether yours does. See solar permits.

What incentives apply to my address?

Federal 25D for purchased residential systems does not apply to post-2025 completions per IRS FAQs. State, local, and utility programs vary. Check DSIRE and your utility’s published solar pages, then confirm eligibility yourself.

Can my HOA stop the install?

It depends on state law and your HOA documents. Many states limit HOA bans, but notice rules and aesthetic guidelines still apply. Get the HOA’s written policy and check your state statute.

What system size does my house need?

It depends on your kWh usage, roof area and orientation, shading, and goals (offset bills vs partial). A site assessment with your actual utility bills is required - online averages are not a design.
How to use this page

Getting a real answer, not a sales answer

A few rules of thumb that apply across almost every question above.

  • Never sign at the kitchen table Same-day pricing is a tactic. Sleep on it.
  • Normalize every quote to cash $/W Total cash price divided by system watts. Then compare models and warranties.
  • Verify tax credit claims at the IRS Not on the sales sheet. 25D rules changed for 2026 purchases.
  • Price battery and roof work separately Bundles hide bad unit economics.
  • Collect all three warranty PDFs Product, performance, workmanship - before you sign.
Sources

Where these figures come from

Sources last checked

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Who wrote and checked this

Written by

The HomeMatchup Content Team

Editorial
Reviewed by

Michael Thompson

Senior Home Improvement Reviewer · 20 years

Senior technical reviewer.

Team-written. Second-person reviewed. Sources dated. Report a correction.

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