Direct Energy Purchase Agreements for Homeowners (PPAs) Explained (2026)

A power purchase agreement (PPA) is a contract under which a third-party owner builds and operates a solar system on your property and sells you the electricity it produces at a fixed price per kilowatt-hour, usually for 20 to 25 years. You pay nothing up front, the developer takes the tax credits and depreciation, and you lock in a per-kWh rate that is typically 10–30% below your current utility rate at signing. Residential PPAs have been a fixture of the U.S. solar market for over a decade, and despite the rise of cheap solar loans they still account for a meaningful share of residential solar deployments. Here is how they work, where they fit, and what to negotiate.

What Is a Residential PPA?

In a residential PPA, a solar developer installs panels on your roof at no cost to you. The developer retains ownership of the equipment, claims the federal Investment Tax Credit (currently 30% under the Inflation Reduction Act) and accelerated depreciation, and bills you only for the electricity the system actually produces. You sign a contract — typically 20 to 25 years — agreeing to buy that power at a defined per-kWh rate that may be fixed for the term or escalate at a defined annual rate (commonly 1.9–2.9%).

A PPA differs from a solar lease in one key respect: a lease charges you a fixed monthly payment for the system regardless of how much energy it produces; a PPA charges you only for delivered kWh. If a tree starts shading your roof or the inverter is offline for a month, the lease bill still arrives; the PPA bill shrinks. That distinction matters during years 12–20 when system performance has degraded modestly and you would rather pay only for what you actually used.

How the Economics Work for You

Two prices matter: your blended utility rate and the contract PPA rate. If your utility delivers electricity at an all-in 16 cents/kWh and a developer offers a PPA at 11 cents/kWh with a 2.5% annual escalator, your first-year savings on a 10,000 kWh solar production figure are $500. The savings compound only if utility rates escalate faster than 2.5% per year — which they have, nationally, every decade since 1990, but not in every state in every year.

The break-even calculation: if utility rates rise 3.5% annually and your PPA escalator is 2.5%, you save more every year. If utility rates flatline or your state caps generation rates, your savings erode and could go negative by year 18–20. Run the math at your state’s historical rate trend before signing — do not accept the developer’s default 4% escalation assumption.

PPA vs Cash Purchase vs Solar Loan

Cash purchase is the highest-return option if you can afford it. You take the 30% federal tax credit yourself, you own the system, and your blended cost of generated electricity over the 25-year life often falls under 6 cents/kWh. Payback periods are 7–10 years in most states.

Solar loans match the no-money-down feel of a PPA but transfer ownership to you. The tax credit goes to you. After the loan is paid off (typically 10–15 years), you have a system producing free electricity for the remaining 10–15 years of its useful life. Total lifetime savings are typically 2–3x higher than a PPA.

A PPA still makes sense when you do not have the tax appetite to use the federal credit (retirees with low federal tax liability are a common case), cannot qualify for a solar loan, do not want to deal with maintenance or insurance, or plan to sell the home within 5–10 years and want a predictable assumable contract for the buyer.

Key Contract Terms to Scrutinize

• Initial rate and escalator: The opening per-kWh rate and the annual percentage escalator are the two biggest economic levers. A fixed (no-escalator) PPA exists but is rare and trades a slightly higher opening rate for inflation protection.
• Term length: 20 or 25 years standard. Some developers offer 15-year terms at higher rates.
• Production guarantee: A reputable developer will guarantee a minimum kWh output per year and credit you if production falls short. Read the measurement methodology — guarantees are often net of degradation assumptions that benefit the developer.
• System monitoring and maintenance: The developer owns the system and is responsible for repairs. Confirm response-time SLAs for outages and whether you bear any costs.
• Insurance: Confirm whether the developer carries equipment insurance or you must add a rider to your homeowner’s policy.
• Buyout option: Most PPAs include the right to buy the system at fair market value at year 6, 10, 15, and at term end. Get the FMV methodology in writing.
• Transferability: When you sell the home, can the buyer assume the contract? What is the credit qualification process? An unassumable PPA can torpedo a home sale.
• Removal at end of term: Who pays to remove the system if you decline a buyout? Some contracts dump that cost on you; reputable ones include free removal.

What a PPA Does to Home Resale

Most appraisers do not assign incremental value to a leased or PPA-financed solar system because the homeowner does not own it. Buyers must qualify for the assumed PPA, which means the developer runs a credit check on them. If the buyer cannot or will not qualify, the seller may have to buy out the contract — possibly at a price well above market value — to close the sale.

That risk is the single largest practical complaint about residential PPAs. Mitigate it by reading the transferability clause carefully before signing and by storing the PPA paperwork in a place easy to hand to your real estate agent at sale time.

States Where PPAs Are Allowed

Third-party PPAs are explicitly legal in roughly 28 states plus DC. In several states (Florida, Kentucky, Oklahoma, North Carolina until 2017, Georgia until 2017) third-party PPAs were prohibited or sharply restricted because the local IOU regulator considered the developer to be an unregulated electric utility. Some restrictions have been removed; others remain. Check your state’s most recent guidance before assuming a PPA is available.

FAQ

Do I get the federal solar tax credit on a PPA? No. The developer claims it. That is precisely how the developer can offer you no-money-down economics.

Can I get net metering with a PPA? Yes, in states that allow net metering on third-party-owned systems. The credit goes against your utility bill, while the developer bills you separately for the panels’ production.

What if my roof needs replacement during the PPA term? The developer typically charges $1,500–$3,500 to remove and reset the panels. Plan a roof replacement before signing if your roof is older than 15 years.

Can I cancel a PPA early? Termination fees are steep — often the net present value of remaining payments. Realistically a PPA is a 20–25 year commitment.

What is a typical first-year savings amount? $300–$1,200 for a residential rooftop system, depending on system size, sunlight, and your utility rate.

Is the system insured? The developer’s equipment insurance covers the panels. Your homeowner’s policy should cover damage to your roof penetrations.

Bottom Line

A residential PPA is the right product for a specific kind of homeowner: someone who wants solar with no money down, cannot or does not want to use the federal tax credit personally, prefers a predictable per-kWh price over ownership upside, and is staying in the home long enough to ride out the contract or has a clear plan for assumption at sale. For nearly everyone else, a cash purchase or solar loan delivers significantly more lifetime savings. Read the escalator, the production guarantee, and the transferability clause before signing — those three terms determine whether the PPA you sign in 2026 looks smart in 2036.