How to Read a Solar Quote: 15 Line Items Explained

You got a solar quote. The number at the bottom is somewhere between $20,000 and $40,000, there's a monthly payment in bold, and a salesperson is telling you it's a limited-time price.

Here's what almost nobody tells you: the total price is the least informative number on that document. Two quotes for the same house can differ by $12,000 — and the cheaper one can be the worse deal.

Below is every line item on a residential solar proposal, with the question to ask on each one.

Why quotes got harder to read in 2026

Two things changed the math this year.

First, the federal 30% residential credit — Section 25D — expired December 31, 2025 under the One Big Beautiful Bill Act (Public Law 119-21)^[2]. For a homeowner-owned system placed in service in 2026, there is no federal credit. That removed roughly $9,000 from the net cost of a typical 12 kW system, and many proposal templates were never updated.

Second, hardware costs rose. Section 232 tariffs added about $0.03 per watt to racking and $0.01 to module frames, and antidumping duties pushed distributed-segment module costs up roughly 13% year over year^[2].

The quote in front of you was generated in a market that has changed — by sales software that may not have.

What a fair price actually looks like

Before you can judge a quote, you need a baseline. These are the 2026 numbers that matter — for a state-by-state breakdown, see our solar panel cost guide for 2026.

Sources: EnergySage, updated June 30, 2026^[1]; SurgePV, updated July 19, 2026, citing NREL Q1 2024 benchmarks, SEIA/Wood Mackenzie Q4 2025, and LBNL^[2]. The LBNL figure is in AC watts — not comparable to the DC-watt figures above.

Read the last row twice. The gap between $2.60/W and $4.20/W isn't equipment — it's financing, and it gets its own line item below.

The 2026 tax credit trap

This is the most important thing on this page.

Many 2026 proposals still show a net cost calculated as system price minus 30%. That math was right through 2025. It isn't right for a homeowner-owned system placed in service in 2026, because Section 25D expired December 31, 2025^[2].

If your quote says "$31,135 gross — $9,341 federal credit — $21,794 net," that $21,794 does not exist. You pay $31,135. If the monthly payment was sized around applying that credit to the loan in year two, your payment schedule is built on money that isn't coming.

Ask this exact question: "Does the savings math on this proposal depend on the Section 25D federal credit?" If the answer is anything but a clear no, have them re-run it at the full gross price — then compare that number to the other bids.

Two caveats. If your system was placed in service in 2025 or earlier, the credit still applies to that tax year. And third-party ownership is different — lease and PPA providers can still claim the commercial credit under Section 48E, which is why those offers still look attractive. See our PPA vs. lease vs. buy comparison.

The 15 line items, one at a time

A complete proposal has all of these. One missing several isn't automatically a bad deal — but you can't tell, and that's the problem.

1. System size in kW (and whether it's DC or AC)

Panels are rated in DC watts, inverters in AC watts. A "10 kW system" almost always means 10 kW DC, and the inverter behind it might be 7.6 kW. The proposal should say which. The typical US home needs about 12 kW^[1]; NREL's benchmark uses 8 kW^[2].

2. Price per watt

Your apples-to-apples number: total cash price ÷ DC watts. The national average is $2.60/W and the 2026 range is $2.50–$3.39/W^[1][2]. Anything materially higher needs a stated reason. Anything far lower needs the opposite question: what's excluded? Compute it from the cash price, never the financed amount.

3. Panel make, model, and wattage

"Tier 1 panels" is not a specification. BloombergNEF's Tier 1 list measures bankability, not quality; the Q3 2026 list has 44 manufacturers and about 1,049 GW of capacity^[9]. For quality signals, EnergySage's 2026 panel review singled out REC, Hyundai, Qcells, Canadian Solar, and SEG^[8]. Ask for the exact model, wattage, efficiency, temperature coefficient, and both warranty documents.

4. Inverter type and model

The inverter is the component most likely to fail. A string inverter typically lasts 10–15 years, so a 25-year system needs at least one replacement^[4][5]. Wrong topology on a shaded roof can cost 15–30% of annual production^[5].

Source: SurgePV inverter guide, March 2026, and SurgePV warranty reference, updated May 2026^[4][5]. Under 5% annual shade loss a string inverter suffices; above roughly 15%, panel-level electronics earn their premium^[5].

5. Battery, if one is included

Battery marketing runs on nominal capacity, which is the wrong number. Ask for usable capacity, continuous output in kW and surge output separately, round-trip efficiency, and cycle life or warranty years. FranklinWH's aPower 2 is quoted at 15 kWh usable with 90% efficiency and a 15-year warranty^[7]; Tesla's Powerwall 3 is 13.5 kWh at 97.5% efficiency^[6]. Our best solar batteries guide compares the field.

6. Racking and mounting

Structural mounting runs about $0.32/W — roughly $2,560 on an 8 kW job — and it's the line item most often left vague^[2]. Ask who makes the rail and attachments, how the roof is penetrated, and whether it's flashed and sealed to the roofing manufacturer's standard.

7. Labor

Field labor runs about $0.21/W, around $1,680 on 8 kW^[2]. That's a small share, which is why "we use our own crew" isn't much of a differentiator. Ask whether the crew is W-2 or subcontracted, and who is the licensed contractor of record.

8. Permits and inspection fees

Direct permitting, inspection, and interconnection fees run $0.10–$0.20 per watt — roughly $800 to $1,600 on an 8 kW system^[2]. Counting re-inspections and design revisions, the full permitting process has been estimated near $1.00/W^[2]. Confirm the fee is fixed rather than a pass-through, and that the licensed contractor pulls the permit — not you.

9. Utility interconnection fee

Separate from the building permit, this is what your utility charges to review the grid connection, bundled into the PII figure above^[2]. Ask for the dollar amount. Then ask whether they file the interconnection application before you sign — in congested territories the utility queue, not the install crew, is the timeline^[11].

10. Monitoring

Most quotes list monitoring as included and move on. Ask whether there's a subscription after an introductory period, who owns the production data, and whether the installer actually watches the system. Warranties are usually enforced with monitoring data, so a gap can cost you a claim later^[4].

11. Production estimate

Every quote has a first-year kWh figure. Few explain where it came from. Ask which tool produced it — PVWatts, Aurora, or an in-house model — and what shading loss percentage was applied. Then ask for hourly output, not just an annual total. If they say "no shade" but there's a tree in the drawing, get the number in writing.

12. Warranty terms

"25-year warranty" is several warranties wearing a trench coat.

Source: SurgePV warranty reference, updated May 25, 2026^[4]. Verified performance terms are a maximum 2% first-year loss, then 0.4–0.55%/year^[4]. Check the specific model's warranty document.

Most manufacturer warranties cover equipment only — labor and shipping may be yours^[4]. A string inverter failing in year 11 costs $1,500–$3,000^[4]. Get the roof penetration coverage in writing, with a number of years.

13. Loan dealer fee and escalator

A dealer fee is what the lender charges the installer for offering a below-market rate — and the installer passes it into your price. Typical fees run 15–30% of the cash price, with standard products at 20–28%^[3].

Source: SurgePV dealer fee reference, updated May 25, 2026^[3]. Illustrative figures for a $30,000 cash price over a 25-year term.

Read it again: the lowest monthly payment comes from the product with the highest dealer fee and highest total cost. A zero-fee product at roughly 6–9% APR keeps the principal at the true cash price^[3]. LBNL found dealer fees adding 5–50% to reported project cost on financed systems^[2]. The lease and PPA equivalent is the escalator — an annual payment increase. Ask for it in writing.

14. Tax credit assumptions

Any line showing a 30% federal credit on a homeowner-owned 2026 installation is wrong^[2]. Ask them to remove it and re-run the savings. If payback stretches from 7 years to 11, that's your real number — and you'd rather learn it now than at tax time.

15. Removal and reinstall clause

Panels last 25–30 years; roofs last 20–30. Most owners will need them removed and reinstalled at least once^[12]. Remove-and-reinstall for a roof replacement runs $1,500 to $6,000, or $275–$300 per panel^[12]. A contract silent on who pays has left a four-figure expense undefined.

Clean quote vs. red flags, side by side

Print this. Hold it next to whatever you were handed.

Check your utility's actual rules — not the assumed ones

Most quotes still model savings as if every exported kilowatt-hour earns the full retail rate. In a growing number of states, it doesn't. There are three US compensation regimes^[11]:

• Retail net metering — exports earn the full retail rate, typically $0.12–$0.40/kWh.
• Net billing — imports bill at retail, exports earn a separate lower rate, usually 20–50% of retail.
• Feed-in tariff — a fixed regulator-set price, usually below retail.

As of 2026, California, Hawaii, Nevada, and Arizona run some form of net billing or reduced export credit; New York is transitioning; New Jersey, Illinois, Maryland, and most of the Southeast and Midwest still offer retail net metering^[11].

The differences aren't academic. In California, NEM 3.0 export values average roughly $0.04–$0.08/kWh against retail of $0.30–$0.45 — which is why batteries became effectively mandatory there. Arizona pays about $0.08–$0.10 and steps down annually; Nevada pays about 75% of retail^[11].

Two things to do before you sign:

1. Look up your state and utility in DSIRE, the NC Clean Energy Technology Center's policy database, at dsireusa.org. Then confirm against the utility's current tariff sheet — DSIRE summarizes, the tariff governs^[11].
2. Ask the installer to name the export rate used in the proposal and the document it came from. "Our model assumes net metering" is not an answer.

One nuance: under net billing, a system sized for annual offset is usually overbuilt. The right design targets 60–80% self-consumption without storage, and batteries recover the evening value^[11]. Our California guide walks through that math; our Texas guide covers the more forgiving retail-net-metering case.

Sales red flags — and why regulators are watching

Solar sales practices are under active enforcement right now.

On April 4, 2026, the Texas Attorney General launched an initiative targeting deceptive practices in the solar industry, focused on misrepresentations about projected savings, system performance, installation practices, and contract terms. The office issued Civil Investigative Demands to multiple solar companies under the Texas Deceptive Trade Practices–Consumer Protection Act^[10].

That's one thread in a larger pattern. The FTC and the Arizona Attorney General sued a solar provider and its telemarketing partner in 2023 over alleged misrepresentations about fees, timelines, and savings. Florida and Connecticut brought similar actions that year. In March 2026, the New York Attorney General sued a home solar company and its lenders; in January 2026, the NYC Department of Consumer and Worker Protection sued a firm over predatory loans and junk fees. Treasury and the CFPB have both issued consumer warnings on solar financing^[10].

The common thread: savings claims that weren't supported by the modeling.

Walk away from these:

• Same-day discount pressure. Legitimate pricing doesn't expire in four hours.
• "Your electric bill will be $0." Ask for the hourly model that produces that number.
• Monthly-payment framing only. No cash price, no price per watt, no dealer fee.
• Tax credit math in 2026. See line item 14.
• PACE "no money down" financing. It creates a property tax lien that can complicate a refinance or sale.

You should also sanity-check the premise before you negotiate. If you haven't worked out whether solar makes sense for your situation at all, start with Is solar worth it in 2026? and run your numbers through our solar savings calculator, which uses real utility rate data with every assumption adjustable — including the absence of a federal credit.

Frequently asked questions

What is a good price per watt for solar in 2026?

About $2.60 per watt nationally for a cash purchase, with the typical 12 kW system at $31,135 before incentives^[1]. Across 2026 US residential pricing, the general band is $2.50–$3.39 per watt^[2]. Below that band, ask what's excluded. Above it, ask what justifies the premium.

Does the 30% federal solar tax credit still exist in 2026?

Not for homeowner-owned systems. Section 25D expired December 31, 2025 under Public Law 119-21^[2]. If you bought in 2025 or earlier, you may still claim it for that tax year. Third-party-owned systems are different — the provider can claim the commercial credit under Section 48E.

Should I sign a quote that only shows a monthly payment?

No. You can't evaluate a monthly payment without the cash price and the dealer fee behind it. Typical dealer fees run 15–30% of the cash price^[3], so the same system can be a $30,000 purchase or a $39,000 one. Compare totals, not payments.

Is a bigger solar system always better?

Only under retail net metering. Under net billing — California, Hawaii, Nevada, Arizona, and a growing list — exports earn 20–50% of retail, so an oversized array gives away most of its extra production^[11]. Storage, not more panels, recovers the evening value.

My installer says net metering will cover my whole bill. Is that right?

Ask them to name the export rate from your utility's current tariff sheet. Under retail net metering it can be close to true; under net billing it usually isn't. Check your state in DSIRE at dsireusa.org, then confirm against the tariff^[11].

What's the most useful question I can ask before signing?

"Show me the cash price, the price per watt, and the production estimate with the shade assumption." Three numbers, one page. A quote that can produce all three comes from someone who knows what they're selling.

Bottom line

A solar quote is a financial document disguised as a sales brochure. Read it like one.

• Cash price per watt. About $2.60/W nationally; $2.50–$3.39/W across the 2026 range^[1][2].
• Whether the savings math assumes Section 25D. It expired December 31, 2025. If the proposal still subtracts 30%, the headline savings number is fiction^[2].
• Your utility's actual export rate. Not the one in the sales model. Pull the tariff^[11].
• The dealer fee behind any loan. 15–30% is normal, and the lowest monthly payment is usually the most expensive product^[3].

Everything else is detail a good installer will put in writing and a bad one will wave away. Run your own numbers first with our solar savings calculator — if the quote beats it by 40%, you're looking at assumptions.