Understanding Solar Contracts: Hidden Fees and Terms to Watch For

A solar contract is a 20–25 year financial obligation, and the terms that matter most for your long-term experience are rarely the ones highlighted in the sales presentation. This guide covers the five contract provisions that consumers most commonly report not fully understanding at signing time — with specific questions to ask and red flags to watch for in each area.

Escalator Clauses

An escalator clause is a provision that increases your payment by a fixed percentage each year. They appear most commonly in solar leases and PPAs, where the annual payment increase is typically 2–3%. This can seem small in isolation, but over a 25-year contract, a 2.9% annual escalator compounds to a 104% cumulative increase by the end of the contract — meaning your payment in year 25 is more than double your payment in year one.

The financial appeal of a solar lease or PPA is often presented as the monthly payment being lower than your current utility bill. This comparison should account for the escalator: if your payment increases at 2.9% annually but utility rates increase at 3.5% annually, the math favors solar over time. If utility rates increase more slowly, the value proposition erodes. Ask for a year-by-year payment schedule for the full contract term before signing.

Cancellation Penalties

Solar contracts — particularly leases and PPAs — typically include significant cancellation penalties if you terminate the contract early. These can range from a flat fee to a buyout calculated as the present value of remaining payments. For a 25-year contract with a present value buyout, this could be tens of thousands of dollars.

Loan contracts also often have early payoff provisions. Some solar loans have no prepayment penalty; others include a fee. This matters if you plan to pay off the loan when you sell your home.

Equipment Ownership

Who owns the solar equipment affects who claims the tax credit, who is responsible for the equipment’s end-of-life removal, and what happens when you sell your home.

• You own it (loan or cash purchase): You claim the 30% ITC. Equipment value is reflected in your home value. You are responsible for end-of-life removal or transfer.
• Company owns it (lease or PPA): The company claims the ITC. You have equipment on your roof that belongs to someone else for 20–25 years. The lease/PPA must be addressed at home sale.

Some loan contracts include a lien on your home or the equipment as collateral. Read the security interest provisions carefully and understand what rights the lender has if you default.

Maintenance Responsibilities

Solar panels require minimal maintenance under normal conditions — occasional cleaning and monitoring for performance drops. But when something does go wrong (a panel fails, an inverter malfunctions, a connection corrodes), who is responsible depends entirely on the contract type.

Ask specifically about what the workmanship warranty covers and for how long. A 10-year workmanship warranty from a 2-year-old company is only as good as the company’s ability to stay in business for 10 years.

Transfer Requirements When Selling Your Home

This is the solar contract provision that causes the most problems at home sale time, because it’s rarely thought about at signing time.

• Owned systems (loan or cash): Generally increase home value and transfer with the home like any fixture. If there’s an outstanding loan, it typically must be paid off at closing.
• Leases and PPAs: The contract must either transfer to the buyer (who must qualify and agree) or be bought out by the seller. Buyers who don’t want to assume a long-term solar payment obligation can decline — which can complicate or kill a home sale. Some markets discount homes with non-transferable solar leases.

If you plan to sell your home within the contract term, understand exactly what the transfer process requires and what happens if a buyer refuses to assume the lease or PPA.

Pre-Signing Contract Checklist

Frequently Asked Questions

Can I negotiate solar contract terms?

Yes. Escalator rates, system size, equipment specifications, and some cancellation terms are negotiable, particularly if you have competing quotes. The more prepared you are with market comparisons, the more leverage you have.

Should I have an attorney review my solar contract?

For high-value contracts, yes — particularly if you’re signing a lease or PPA. The cost of an attorney review (typically $200–$500) is small relative to the value of a 25-year obligation. Alternatively, a consumer protection legal aid organization may be able to review the contract at no cost.