Chris Meehan has covered solar and clean energy since 2010 and served as Executive Editor of SolarReviews for seven years, running its daily industry news desk. His work has appeared in Sun & Wind Energy and other trade publications.
A solar energy consultation is a sales meeting, however friendly it feels, and the homeowner who arrives with questions runs it instead of sitting through it. The 18 questions below, grouped by what they test, separate solid installers from sales machines. For each one we note what a good answer sounds like, because the point is not interrogation; it is hearing whether the person across the table actually knows your roof, your utility, and your town.
Key takeaways
- Bring four things: 12 months of bills, your roof’s age, your utility’s export policy, and your state’s license lookup page. Prepared homeowners hear better proposals.
- Company questions come first: a verifiable license number, years under one name, own crews or subcontractors, and references from installs older than three years.
- A design built from your actual 12 months of usage is the mark of a real proposal. A size quoted before anyone saw a bill is a guess.
- Ask for the total price, the price per watt, and the cash-versus-financed gap. The gap exposes dealer fees baked into loan pricing.
- The 25D federal homeowner credit ended for purchases after 2025. Anyone promising a 30% federal credit on a cash purchase is out of date or worse.
Ten Minutes of Prep That Changes the Whole Meeting
Four things to have in hand before anyone rings the doorbell. Together they take about ten minutes and change how every answer lands:
- Your last 12 months of electric bills, or at least the annual kilowatt-hours from your utility’s website. This is the number every honest design starts from.
- Your roof’s age, even approximately. If it is within 5-8 years of replacement, that conversation comes before the solar one.
- Your utility’s export policy, what it pays for power you send back. Your state’s incentives guide covers it in plain language.
- Your state’s license lookup page, bookmarked. When question 1 below produces a license number, you can verify it the same evening.
Prepared homeowners also hear better proposals. A rep who realizes you know your annual usage and your export rate skips the theater and starts talking numbers, which is exactly the meeting you want.
Questions About the Company
These five establish whether the company will exist, and answer the phone, for the decades your warranty runs.
- What is your state contractor or electrical license number? A good answer is a number you can verify with the state before the second meeting, not a logo or a “we partner with licensed contractors.”
- How many years have you operated under this name? Name changes can hide a trail of complaints. Longevity under one name is a quiet strength signal.
- Do your own crews install, or do you subcontract? Subcontracting is not automatically bad, but you want to know who is physically on your roof and whose workmanship warranty covers their work.
- Who handles warranty and service calls, and what is the typical response time? The honest answers name a person or a department, not “the manufacturer.”
- Can you share references from installs older than three years? Anyone can produce a happy customer from last month. Year-3 customers know how service actually goes.
Questions About the System Design
These four test whether the proposal was designed for your house or copied from the last one.
- How did you size this system from my actual usage? The good answer references your last 12 months of kilowatt-hours. If nobody asked for your bills, the design is a guess.
- What annual production do you estimate, and with what assumptions? Shade, orientation, and real-world losses should all be in the model, and the number should be defensible against other quotes.
- Is my roof ready for 25 years of panels? A roof near the end of its life should be replaced first; removing and reinstalling a system later costs real money. An installer who checks the roof age is protecting you.
- How did you assess shading? “We used a shade analysis tool on your actual roof” beats “your roof looks fine from the street.”
Want a design benchmark before the consultations start? Get an independent read on your roof.
Get your free solar report →Questions About Price and Contract
These four make the money conversation happen on your terms.
- What is the total contract price, and the price per watt? If the conversation keeps returning to the monthly payment, ask again. Price per watt is how you compare this quote to the others in our quote guide.
- What would this system cost in cash versus financed? The gap between the two exposes dealer fees baked into loan pricing. A company that answers this plainly is being straight with you.
- Which incentives am I actually eligible for in 2026? The right answer is state-specific and honest about the federal change: the 25D homeowner credit ended for purchases after 2025, while some lease arrangements and many state programs continue. Anyone promising you a 30% federal credit on a cash purchase is out of date or worse.
- What happens if the system underproduces? Listen for a written production guarantee with a make-whole formula, or an honest explanation of why they do not offer one.
Questions About Warranty and Service
- How long is your workmanship warranty, and does it cover roof penetrations? Equipment warranties come from manufacturers; the roof holes are the installer’s. Ten years or more is a good sign, and roof coverage in writing is the part homeowners forget.
- Who files equipment warranty claims, you or me? The good answer is “we do.” A company that hands you the manufacturer’s phone number in year 6 was never really your installer.
- Who monitors the system’s output after installation? Monitoring exists; the question is whether anyone looks at it. Some companies alert you when production drops; most do not, unless you ask.
Questions About Timeline and Process
- How long do permits actually take in my town? A local operator answers with specifics; a call-center operation answers with a national average. Our permits guide explains what the answer should contain.
- Who handles the utility interconnection, and when do I get permission to operate? The whole sequence, contract to switch-on, should be theirs to manage and yours to verify.
How to Use These Questions
Ask the same set in every solar energy consultation, and write the answers down; the differences between companies appear on paper faster than in conversation. You do not need perfect answers to all 18; you need honest ones, and you need the pattern the answers form. A company that hedges on licensing, dodges the cash price, and promises expired incentives has answered the only question that matters.
Good Answer or Walk Away: A Quick Reference
You Asked | A Good Answer Sounds Like | Walk Away If You Hear |
|---|---|---|
License number | A number, offered without hesitation | “We work with licensed partners” |
System sizing | “Based on your 12 months of usage…” | A size quoted before anyone saw a bill |
Cash vs financed price | Both numbers, and the difference explained | “The monthly payment is all that matters” |
2026 incentives | State-specific, honest about the federal change | A 30% federal credit promised on a cash purchase |
Workmanship warranty | 10+ years, roof penetrations in writing | “The panels have a 25-year warranty” as the whole answer |
Permit timeline | Your town, named, with a real range | “Permits are handled, do not worry about it” |
Where to find companies worth asking: our state company guides list installers whose licensing and local presence we verified before recommending them, and the full purchase path lives in our solar buying guide. If an answer feels rehearsed rather than wrong, our red flags guide shows the patterns to check it against.
Skip the cold calls: start with installers whose licenses we already verified for your state.
Get your free solar report →Solar Consultation FAQs
What I wish I knew before getting solar panels?
The three things experienced solar owners mention most: the installer matters more than the panel brand, the roof should be evaluated honestly before anything goes on it, and the savings math should be run with your own numbers rather than the sales chart’s assumptions. All 18 questions in this guide exist to surface those three early.
What are some good questions to ask about solar energy?
Start with the ones that test your specific situation: how was my system sized from my usage, what will my utility pay for exported power, which incentives am I actually eligible for this year, and who services this system in year 10. Generic questions get rehearsed answers; specific ones show you who did their homework.
What is the 20% rule for solar panels?
It is a sizing rule of thumb: real-world output runs meaningfully below a panel’s laboratory rating once heat, wiring losses, and orientation are counted, commonly estimated around 20%. Ask your installer whether their production estimate already includes those losses; a good one will say yes and show the assumptions.
What is a solar energy consultation?
It is the meeting, at your home or virtual, where an installer assesses your roof and usage and presents a proposal. Treat it as a two-way interview: they evaluate your house, you evaluate their answers. It should cost nothing and carry no obligation, and any pressure to sign during it is a red flag.
References & Research Sources
- U.S. Department of Energy, Homeowner’s Guide to Going Solar. Accessed September 2026.
- American Solar Energy Society, consumer guidance on selecting a solar installer. Accessed September 2026.
- Federal Trade Commission, consumer advice on shopping for home solar. Accessed September 2026.
- Internal Revenue Service, guidance on the section 25D residential clean energy credit expiration. Accessed September 2026.
