The right way to pay for solar in 2026 looks different than it did a year ago. The residential Section 25D credit expired December 31, 2025, while the commercial Section 48E credit that third-party owners use on lease and PPA deals remains available under current law if the project starts construction by July 4, 2026, or is in service by December 31, 2027. That single change reshuffled the math. Below is what each of the four standard financing paths actually costs in 2026, who they fit, and how to choose between them.
How cash and loan compare now that the residential credit is gone
Cash and loan buyers cover the entire system cost themselves, and as of 2026 there is no federal credit to offset it. On a $30,000 system producing 25,000 kWh per year, a cash buyer pays upfront and recovers the money through electricity savings of roughly $3,500 in year one. That number grows about 3.5 percent annually as your utility raises rates, and your panels lose around 0.5 percent of output per year. After factoring in a $2,000 inverter replacement near year 13, simple payback lands in the 10-12 year range for most homes.
A loan runs on the same math with interest stacked on top. A 25-year solar loan at 7.49 percent on a $30,000 system lands near $222 per month. Compare that to roughly $291 in monthly electricity offset and you are net positive from month one, though total payments across the term can push lifetime cost above $66,000. Shorter loans cost less in interest but raise the monthly payment above the savings line.
Either path gives you ownership, every dollar of electricity savings, the home value bump at resale, and full responsibility for maintenance. They make sense if you have the cash on hand or strong credit, plan to stay in the home for 10-plus years, and value owning the asset over squeezing every dollar out of the lifetime cost. The 2025 math favored ownership. The 2026 math no longer does.
Why a lease usually costs less in 2026 than buying
A lease lets a solar company buy and own the system while you pay a monthly rate to use the electricity. They claim the Section 48E credit — worth roughly 30 percent of the system price — and rebate most of that value to you through a lower payment. Expect $80-$120 a month on a 25,000 kWh system in 2026, escalating around 2 percent per year.
Compare that to the $291 in monthly electricity those panels offset, and you net positive cash flow from day one. The gap widens over the contract because utility rates climb faster than the 2 percent lease escalator. Over the full 20-25 year term, a lease typically totals $30,000-$35,000 — close to a cash purchase but with no upfront cost.
Maintenance, monitoring, and the year-13 inverter swap all belong to the system owner. That is the operational reason many homeowners pick lease over loan, even before the dollars. You sign no debt, take on no asset risk, and lease contracts are assumable when you sell.
The trade-offs are real. You do not own the system, you cannot count it toward home equity, and some buyers hesitate to inherit a 20-year contract. Lease fits if you want a predictable bill, low involvement, and the 48E credit's economics without owning the hardware.
How a PPA differs from a lease and usually wins on lifetime cost
A Power Purchase Agreement is structurally a lease, but the bill changes with what the system actually produces. The solar company owns the array and sells you the electricity at a fixed per-kWh rate, typically $0.11-$0.15 in 2026, escalating about 2 percent per year. Your utility currently charges around $0.14 per kWh and raises rates roughly 3.5 percent annually, so the spread widens in your favor as the contract ages.
You pay only for the kWh the system delivers. Overcast months cost less, peak summer production costs more. Same Section 48E pass-through as a lease, same maintenance handoff, same assumability if you sell the home.
The honest knock on PPA is that the bill varies month to month, which makes household budgeting slightly harder than a fixed lease payment. The upside is lifetime cost. Over 25 years a PPA usually totals around $28,000-$32,000 — the lowest of the four standard options, below the $32,000 cash floor and well under the $66,000 loan total.
PPA fits homeowners who want the lowest possible lifetime cost, are comfortable with a production-linked bill, and want the operational simplicity of letting the solar company own and run the system.
How to choose between the four paths
Start with cash. If $30,000 in liquid savings is not realistic, ownership is off the table and the choice narrows to lease or PPA. If $30,000 is realistic, ask whether deploying it in solar beats holding it in a money market or paying down higher-interest debt.
Next, weigh time horizon. Plans to stay 15-plus years tilt toward ownership because cumulative electricity savings eventually exceed lease payments. Plans to move in 5-10 years tilt toward lease or PPA — both are assumable and remove the resale conversation about owned solar hardware.
Last, weigh involvement. Owning means handling a $2,000 inverter swap at year 13 and any panel replacements after the warranty window. Third-party ownership means you call the company that owns the system.
The 2026 math favors lease and PPA on pure lifetime cost. Ownership still wins on equity and long-term control. None of these decisions are cheap to reverse, so model the numbers against your actual roof, utility rate, and timeline before you sign anything. The Solrova Solar Design Studio lays all four paths side by side using your real kWh production estimate — see the numbers next to each other before you commit.