Red Flags in a Solar Contract (What Installers Hope You Don't Notice)

A solar contract locks you in for 20 to 25 years. The language is written by the installer's lawyers to protect the installer, not you. Two things changed the market in 2026. Section 25D, the 30% federal credit for cash and loan buyers, expired December 31, 2025. Section 48E still passes through lease and PPA pricing through 2027 (construction start by July 4, 2026, or in service by the end of 2027). More homeowners are signing leases and PPAs as a result — the same contracts where the clauses below most often go unread.

Why a capped, specific escalator matters most

The escalator is the annual percentage your monthly payment rises. Most lease and PPA pitches sound casual: "about two percent a year, in line with inflation." Read the contract language anyway. Two clauses keep slipping past homeowners.

First, uncapped or unspecified escalators. Contracts that say "escalator to be determined" or "indexed to industry standards" hand the solar company discretion. PPAs signed in 2025 and 2026 have carried escalator language as high as 3.9% annually — well above what residential grid rates rise and well above the Consumer Price Index.

Second, compounding math. A $200 first-year payment with a 2.5% escalator reaches $328 by year 20. At 3.5%, it crosses $397. That is not inflation. That is a compounding curve on a long contract.

Demand one specific percentage in writing, capped at no more than the Consumer Price Index. Between 1.9% and 2.9% is reasonable in 2026. Anything labeled "discretionary," "subject to review," or tied to "market conditions" should come out before you sign.

The same principle applies to unilateral rate changes outside the escalator. Some contracts let the solar company raise rates to cover "system costs" or "maintenance increases." That is a separate blank check. Strike it. Rates should change for one reason only: the capped, scheduled adjustment you agreed to upfront.

Hidden dealer fees and what the cash price really is

The number an installer quotes for a lease or loan is rarely the all-in cost. Dealer fees, broker fees, and origination fees are routinely buried in the financing structure. On a typical 20-year solar loan in 2026, dealer fees can run 15% to 30% of the contract value, added to the system price you see.

A dealer fee can appear as a one-time charge added to your principal, a percentage of your monthly payment, or a line item dressed up as "loan origination," "system acquisition cost," or "platform fee." Whatever the label, it is money you pay that does not buy panels, inverters, or labor.

Ask one direct question in writing: "What is the cash price of this system from your installer, and what is the dollar amount of every fee added on top to reach the financed total?" A trustworthy answer is itemized — equipment, labor, permits, sales tax, dealer fee, financing cost.

A vague response — "that is how the financing is structured" or "the manufacturer sets the fee" — is the red flag. You are not getting a clear price.

Comparison is the other reason this matters. A $40,000 quoted loan and a $30,000 cash price for the same hardware tells you the dealer fee was roughly $10,000. Without an itemized breakdown, you cannot compare two installers on equal terms.

Warranty carve-outs and who owns your monitoring data

Two warranty problems repeatedly catch homeowners. Both are quiet, and both matter most years after you sign.

The first is warranty carve-outs. A 25-year production warranty sounds strong until you read the exclusions. Common carve-outs exclude degradation caused by "normal wear and tear," "weather-related events," "grid voltage fluctuations," or "homeowner maintenance." Each is exactly the kind of thing that happens on a rooftop over 20 years. If a panel degrades past the 0.5% per year industry standard, is that a defect or "normal wear"? The contract language decides who pays.

Before signing, ask the installer to list — in writing — what scenarios are covered, then what scenarios are excluded. If the exclusion list is broader than the inclusion list, the warranty is doing less work than it looks.

The second is data ownership. Modern systems generate continuous performance data through Enphase or SolarEdge portals. That data shows whether the system is hitting its production guarantee, how fast panels are degrading, and whether anything is broken. Some contracts state that the solar company owns all monitoring data. That makes you dependent on them for any independent assessment, and it makes verification harder if the company exits the market — a real risk in 2026, with Freedom Forever in Chapter 11 restructuring.

Require contract language stating you have direct manufacturer-portal access in your own account, for the life of the system. The installer may hold a copy. The data should be yours.

Right of first refusal and the home-sale trap

Some lease and PPA contracts include a "right of first refusal" or transfer-approval clause. It hands the solar company veto power over how, when, and to whom you sell your home — for the full 20- to 25-year term.

In practice: you list your home, a buyer agrees to assume the solar agreement, and the solar company then has to approve that buyer's credit, sign off on the assumption, or decide whether to repurchase the system at a price the contract defines. Closings have stalled, and sales have fallen through, because a third party held veto power over a transaction the homeowner thought they controlled.

Some clauses are broad enough that the system owner can reject the buyer entirely if their credit profile is weaker than yours. That happens most on PPAs, where the owner's revenue depends on the new homeowner's ability to pay.

Ask for the clause to be struck. If the solar company will not remove it, require explicit language waiving the right of first refusal whenever the buyer signs a written assumption agreement. Add a 15-business-day cap on any approval the solar company reserves.

The buyback formula deserves the same scrutiny. If the contract gives the solar company the right to buy the system back for "fair market value," ask exactly who determines that value and what happens if you disagree.

Roof penetration liability and the 48E pass-through question

Two final clauses to read carefully.

Roof penetration liability. Panels bolt into your roof structure with hardware that breaks the weather seal. Flashing and waterproofing that penetration is the installer's responsibility. Some contracts shift it back to you with language like "homeowner assumes responsibility for all roof condition issues during and after installation." That is too broad. If a leak appears two years later directly under a mounting bracket, you should not be paying for the repair.

Require contract language stating the installer is responsible for roof penetration and waterproofing for a defined period — five to ten years is industry standard. Add a specific dollar cap if the installer resists open-ended liability.

The 48E pass-through. If you are signing a lease or PPA in 2026, Section 48E — the 30% federal credit available to commercial system owners under current law if the project starts construction by July 4, 2026, or is in service by December 31, 2027 — is reducing the solar company's cost of building your system. How much of that reaches you depends entirely on how the contract is structured. Some solar companies pass the full credit value through as a lower monthly payment. Others keep most of it.

Ask the same way you asked about dealer fees, in writing: "What dollar amount of the Section 48E credit on this system is reflected in the price I am being quoted?" A clear, specific number is the right answer. "It is built into the pricing" is not.