A solar PPA agreement is a long-term contract in which a developer installs and owns solar panels on your property and sells you the electricity they produce, usually at a rate below what your utility charges. You avoid the upfront cost of buying a system, but you give up ownership, the federal tax credit that comes with it, and your flexibility for as long as 25 years. The clauses inside the contract — rate, annual escalator, performance guarantee, buyout terms, and what happens if you sell the house — decide whether the deal is a good one.
How the Arrangement Works
Under a PPA, a solar services provider handles financing, design, permitting, and construction of a system on your property at little or no upfront cost. An investor supplies the equity and receives the federal and state tax benefits. Your utility continues to serve the home and provides grid interconnection for whenever the panels produce less than you use.1US EPA. Solar Power Purchase Agreements You pay only for the kilowatt-hours the system actually produces, so the bill rises and falls with output rather than sitting at a fixed monthly amount.
The developer keeps the equipment on its books and handles maintenance, monitoring, and repairs for the life of the contract. If the panels underperform or fail, that’s the developer’s problem to fix. The trade-off is straightforward: cheaper electricity and no maintenance burden in exchange for no ownership and no tax incentives.
What to Have Ready Before You Sign
Developers need enough data to size the system and underwrite the account before they’ll send you a contract. Having these items ready shortens the process:
- Twelve months of utility bills, used to size the system to your household’s actual kilowatt-hour use. Most utilities let you download past statements from an online portal.
- Your utility account number, which confirms the service address and interconnection territory.
- Proof of ownership through a deed or tax assessment. For leased property, solar financing works best when the lease term is long enough to cover the PPA duration.1US EPA. Solar Power Purchase Agreements
- A homeowner’s insurance declaration page. Some PPAs require you to maintain a specified level of coverage.
- Credit information. The developer or financing company runs a credit check, sometimes soft and sometimes hard, to qualify you for the long-term payment structure.
There is no industry-standard PPA form. Each company uses its own template, so layout and language vary from one provider to the next.
Contract Terms That Decide the Economics
Compare the contract’s electricity rate against what you currently pay per kilowatt-hour on your utility bill, and read the sections that describe how PPA costs can change in the future.2U.S. Department of the Treasury. Consumer Advisory – Before You Sign a Power Purchase Agreement A few provisions carry most of the weight.
The Rate Escalator
Nearly every PPA raises your per-kilowatt-hour rate by a fixed percentage each year. According to the EPA, this escalator typically runs 1 to 5 percent and reflects gradual efficiency loss, rising maintenance costs, and expected utility rate increases.1US EPA. Solar Power Purchase Agreements A 1 percent escalator over 20 years is manageable. A 5 percent escalator can push your PPA rate above the utility rate within a decade. Run the math out to year 15 or 20 before agreeing to the number.
Term Length
PPA terms range from as short as six years, the point at which the developer has fully captured available tax benefits, to as long as 25 years.1US EPA. Solar Power Purchase Agreements The Treasury Department specifically cautions homeowners to weigh the term against how long they expect to stay in the home. If the PPA runs 15 years and you plan to move in five, a community solar program or another arrangement may suit you better.2U.S. Department of the Treasury. Consumer Advisory – Before You Sign a Power Purchase Agreement
Performance Guarantee
A well-drafted PPA guarantees a minimum number of kilowatt-hours the system will produce annually under normal weather. If production falls short, the developer typically owes you a refund or credit for the difference between what was promised and what was delivered. Look for the guaranteed figure, the measurement period (usually annual), and the specific remedy for underperformance. A contract without any performance guarantee is a red flag worth raising before signing.
End-of-Term Options
When the contract expires, you generally have three choices: renew at renegotiated terms, purchase the system from the developer, or have the equipment removed at no cost.3Better Buildings and Better Plants Initiative. Power Purchase Agreement You do not automatically own the system when the PPA ends. If you want to keep it, you’ll have to buy it at fair market value.2U.S. Department of the Treasury. Consumer Advisory – Before You Sign a Power Purchase Agreement Make sure the contract spells out the buyout formula or valuation method so you aren’t negotiating from a blank page two decades from now.
Who Actually Gets the Tax Credit
Because you don’t own the system, you cannot claim the federal clean electricity investment tax credit on your personal return. The Treasury Department puts it plainly: “Be wary of anyone who says that you can use tax credits to reduce the cost of the panels. With a PPA, you don’t own the system, so that claim is a lie.”2U.S. Department of the Treasury. Consumer Advisory – Before You Sign a Power Purchase Agreement
The credit belongs to the system owner, typically the developer or its tax equity investor. Under 26 U.S.C. § 48E, the applicable credit is 30 percent of the qualified investment for facilities with a maximum net output of less than 1 megawatt, which covers virtually all residential installations.4Office of the Law Revision Counsel. 26 USC 48E – Clean Electricity Investment Credit The benefit reaches you only indirectly, if the developer prices its tax savings into a lower per-kilowatt-hour rate. To capture the credit yourself, you’d need to own the system outright through a purchase or loan.
The UCC-1 Filing and Your Mortgage
After you sign, the developer typically files a UCC-1 financing statement in your county’s public records. The filing puts future lenders and buyers on notice that the solar equipment belongs to the developer and is not a permanent fixture of the real estate. It’s a security interest over the panels, not a lien on your home.
Complications appear during a mortgage refinance. If the UCC-1 is drafted too broadly and appears to claim an interest in the whole property rather than just the equipment, your lender may require correction before closing. Freddie Mac allows the developer to file a UCC-3 amendment narrowing the filing to cover only the solar panels. If the developer won’t amend or subordinate, an endorsement to the lender’s title insurance policy can sometimes satisfy the requirement.5Freddie Mac. Solar Panel FAQ If a refinance is on your near-term horizon, ask the developer how they handle UCC-1 subordination before you sign.
Insurance Responsibilities
Because the developer owns the panels, the developer generally insures the equipment and bears the financial risk of malfunction or failure. Your homeowner’s policy covers your dwelling and personal property, not third-party equipment on your roof. Some PPAs, however, require you to raise your homeowner’s coverage to protect against storms, fire, or falling debris that could damage the panels. Read the insurance section carefully and call your insurer to confirm whether adding panels affects your premium or coverage limits before installation begins.
Ask specifically what happens if the system is damaged by a storm, fire, or natural disaster, and what recourse you have with the developer to stop payments if the system isn’t repaired promptly.2U.S. Department of the Treasury. Consumer Advisory – Before You Sign a Power Purchase Agreement
Your Right to Cancel After Signing
If the PPA was signed at your home, which is common when a sales representative visits for a site assessment, you have at least three business days to cancel without penalty. The Treasury Department confirms this cancellation right applies to PPAs signed at a consumer’s residence.2U.S. Department of the Treasury. Consumer Advisory – Before You Sign a Power Purchase Agreement Under the FTC’s Cooling-Off Rule, your cancellation notice must be postmarked before midnight of the third business day after signing. Saturdays count as business days; Sundays and federal holidays do not.6Federal Trade Commission. Buyer’s Remorse – The FTC’s Cooling-Off Rule May Help
The rule does not apply when you complete the transaction entirely online, by phone, or at the seller’s permanent office. Some states extend the window beyond three days for solar contracts, so check your state’s consumer protection law as well.
Selling the Home With an Active PPA
If you sell before the term ends, you generally have three paths. You can transfer the agreement to the buyer, buy out the system yourself, or prepay the remaining balance to remove the obligation from the sale entirely.
Transferring is the most common. The buyer applies with the solar company and undergoes a credit check. If approved, they take over the existing terms, same rate, same escalator, same remaining years. The risk is that not every buyer qualifies or wants to assume the agreement, which can narrow your pool of purchasers or slow the sale.
Buying out the system turns you into the owner, and you can then sell the home with owned panels, which is generally simpler for the buyer. Buyout pricing is typically based on fair market value or a declining schedule written into the contract. Some agreements restrict buyouts to specific milestones such as the fifth or tenth anniversary or the point of sale, so check the buyout clause well before listing.
Prepaying the remaining balance eliminates the contract entirely. It can be expensive, but it takes the PPA off the table in the transaction. Whichever path you take, start early. Coordinating a transfer or buyout while closing a home sale takes more paperwork than most sellers expect.
Early Termination and Developer Failure
Walking away before the term ends is not simple. Most contracts include early termination fees designed to compensate the developer for the returns it expected over the full period. These fees are often front-loaded and decline as the contract matures. Ask about exit fees and early termination penalties before signing, and confirm whether those fees can change over time.2U.S. Department of the Treasury. Consumer Advisory – Before You Sign a Power Purchase Agreement
Ask, too, what happens if the developer goes out of business or sells your contract to another company. Get that language in writing. A developer that folds mid-contract can leave you with panels on your roof, no maintenance support, and no clear path to resolution. Knowing who holds the contract and what happens if they transfer it matters before you commit to a decade or more of payments.
State Availability
Not every state allows third-party power purchase agreements. Some states restrict or prohibit them under utility regulations that limit who can sell electricity directly to consumers. Availability can also vary within a state: a municipal utility may not permit PPAs even where the state generally allows them. Before spending time on an application, confirm that third-party solar agreements are authorized in your area with your utility or your state’s public utility commission.