Lease vs Purchase After the Tax Credit: Which Makes More Sense in 2026?

For most of the last decade, the answer to "should I lease or buy solar?" was straightforward. Cash purchase won. The 30% federal tax credit went to the system owner, and if you owned the system, you got the credit. Leases came out behind in the math for almost everyone with the cash to buy. That changed on January 1, 2026. The federal Residential Clean Energy Credit (Section 25D) expired at the end of 2025. The commercial credit (Section 48E) is still available through end of 2027 for system owners that are businesses, which is what a solar lease or PPA company technically is. They claim the credit. They pass the value to you in the form of a lower upfront cost or a lower per-kWh rate. The math has flipped for a lot of homeowners. Here is how to tell which option works for you. In 2026, cash purchase still wins if you have the capital, plan to stay in your home 15+ years, live in a high-utility-rate region, and want maximum long-term savings. Lease or prepaid lease wins if you do not have the cash, want lower risk, plan to move sooner, or live in a region where rate structures favor third-party ownership. The gap between the two has narrowed significantly, and the lease option is competitive for the first time in years. Cash purchase in 2026: what changed The mechanics of cash purchase did not change. You pay the system price upfront, you own the system, you keep all the power it produces, you pay no monthly bill to a third party, and over the 25-year life of the panels you get every dollar of savings the system generates. What changed is the price. Before 2026: a $40,000 system carried a $12,000 federal tax credit, so your effective cost was $28,000. After 2026: a $40,000 system is a $40,000 system. Your effective cost is $40,000. That $12,000 difference is real. It pushes the payback period out by a few years for most homeowners. It also means cash purchase no longer dominates the comparison the way it used to. It still wins in the right situation. If you live in California, Connecticut, Massachusetts, Hawaii, or any other high-utility-rate state, and you plan to stay in the home for 15-25 years, cash purchase usually beats every other option over the system's life. You eliminate the financing fee. You eliminate the lease escalator. You keep 100% of the production value. The break-even point against utility usually arrives somewhere between 8 and 14 years in 2026, depending on your specific rate. Lease and PPA: the new math A solar lease (you pay a fixed or escalating monthly fee for the panels on your roof) or PPA (you pay a per-kWh rate for the power those panels produce) is a contract with a third-party system owner. They install. They maintain. They claim the federal commercial credit (48E) on their tax return. You use the power. For most of the last decade, lease companies had to price these contracts in a way that left them a margin after paying for the system, the install, the maintenance, the credit, and the financing. The price they could offer you was always somewhat higher than the cash math, which is why cash purchase beat leasing for most cash-buyers. In 2026, the lease company can still claim that 30% commercial credit. You cannot. So when they pass the credit value through to you (in the form of a lower upfront cost on a prepaid lease, or a lower per-kWh rate on a PPA), the price they offer can now beat the cash math for the first time in years. The two flavors that work best in 2026: Prepaid lease. You pay a single upfront sum (usually 30-50% of what a cash purchase would cost) and then have free use of the panels for a fixed term, typically 20-25 years. The lease company claims the federal commercial credit on their cost basis, which is why they can offer the prepay at a discount. You own no equipment. You owe no further payments. Practically speaking, it functions a lot like a cash purchase, just for less money upfront. Power Purchase Agreement (PPA). You pay a fixed per-kWh rate for the power the panels produce, typically lower than your current utility rate by 10-30%. The rate can be fixed for the term or include an annual escalator (1-3% per year). At the end of the term you usually have an option to renew, buy the system, or have it removed. Both structures shift the system ownership risk off you and onto the lease company. They handle warranty claims, equipment failures, monitoring, and tax filings. When cash purchase still wins The economics still favor cash purchase if: - You have $30,000-50,000 in liquid cash you do not need elsewhere. - You plan to stay in the home 15+ years. - You live in a high-utility-rate state (California, the Northeast, Hawaii). - You have a good south-facing roof with minimal shading. - You are comfortable with the maintenance and warranty admin yourself. Run the numbers. For this profile, cash beats lease over the full 25 years, usually by 15-25%. When lease or PPA now wins Lease or PPA wins if: - You do not have the cash for an outright purchase (and do not want to use it on this). - You want lower risk and less maintenance responsibility. - You plan to sell the home within 10 years. - You live in a state where utility rate structures (like NEM 3.0 in California) favor third-party-owned systems with optimized export rates. - Your only alternative is a solar loan with a high dealer fee, in which case the lease often costs less over the same term. The math gets especially favorable when you compare a 2026 prepaid lease to a 2026 solar loan. The loan carries the dealer fee. The lease carries the passed-through commercial credit. The lease usually wins. How to actually compare the two for your situation The cleanest approach is getting multiple quotes for the same project and lining them up apples-to-apples. When you get quotes, ask each installer for three numbers on the same project: 1. The cash purchase price. 2. The financed loan price (with APR and term). 3. The prepaid lease price or PPA rate. Then calculate the total amount you would pay over 25 years for each. For cash: just the cash price. Plus any utility bill you would still have if the system does not cover 100%. For loan: 12 monthly payments times the loan term. Plus any utility bill on the gap. For prepaid lease: the upfront price. Plus any utility bill on the gap. For PPA: estimated annual production times the per-kWh rate, escalated annually if applicable, over the term. Plus any utility bill on the gap. The lowest 25-year total wins. Often the gap between the top two is small enough that other factors (ownership preference, time horizon, comfort with the contract) decide it. The shortcut You can do all this math yourself. It takes most homeowners several evenings. Or you can use a marketplace that runs all three or four financing structures for you on the same project specs, from multiple vetted installers. The comparison becomes visible at a glance. The structure that wins for your situation usually shows up clearly in the side-by-side. That is what Solar Connect was built to do. Get multiple quotes, multiple financing structures, no sales calls, your time. If you're still on the fence, our post on whether solar is still worth it without the federal tax credit walks through the five drivers that determine the answer for your situation.