Post-48E Solar Financing: Cash, Loan, Lease, or PPA — Which Is Right for You?
Updated July 25, 2026 · 8 min read · by EnergyTools
The 25D residential solar tax credit expired on December 31, 2025. That single change inverted which financing option wins. Here is the unified, bill-size-driven decision framework no other site lays out — one page you can read in five minutes and know which button to click next.
The post-48E market in 90 seconds
25D is gone. Homeowners can no longer claim the 30% residential credit on a purchased system. Section 48Ereplaced it but flows to the asset owner. If you buy with cash or a loan, that is you — but 48E is a business/investment credit, and most homeowners cannot monetize it on a personal return. If you lease or sign a PPA, thethird-party owner (the installer or financier) captures 48E and passes a slice through to you as a lower monthly payment or a lower per-kWh rate. The net effect: the historic advantage of cash and loans (the 30% credit) disappeared, so lease and PPA got relatively cheaper. For the deep argument, readthe inversion analysis; for the credit mechanics, seeSection 48E pass-through.
Your four options, post-48E
Each option below gets one line on what it is and one line on what changed after 48E. For the full definitions,solar financing optionscovers the mechanics in depth.
| Option | What it is | What changed after 48E | Calculator |
|---|---|---|---|
| Cash purchase | Own it outright. | No more 25D credit, so full price is truly full price. | Financing Comparison |
| Solar loan | Finance over 10–20 yrs. | No credit to offset the (often 20–30%) dealer fee. | Financing Comparison |
| Lease | $0 down, fixed monthly. | TPO's 48E pass-through lowers your payment. | Lease vs Buy |
| PPA | Pay per kWh (~12–18¢/kWh, escalating). | Pass-through lowers your per-kWh rate. | Post-48E Payback/PPA Analyzer |
The decision flowchart
Lead with your condition, then read the recommendation. This is the centerpiece — everything else on this page supports it.
If Your bill is under $150/mo and you may move within 7 years
Lease or PPA
Minimal upfront, the 48E pass-through lowers your ongoing cost, and you avoid owning a system you would sell at a loss when you move. Lease vs Buy Calculator →
If Your bill is $150–$250/mo (the "inversion zone") and you plan to stay 7–15 years
Lease or PPA usually beats cash on lifetime cost
This is the inversion: without the 25D credit, the 48E pass-through tips the math. Ownership's old edge (the 30% credit) is gone. See the inversion analysis →
If Your bill is $250–$350/mo
It's a toss-up — run both
In this band the answer depends on your exact rate, sun hours, and horizon. Model both paths before deciding. Financing Comparison vs Post-48E Payback →
If Your bill is over $350/mo and you will stay 15+ years
Cash purchase usually wins
Absolute kWh savings dominate the 48E pass-through slice at high consumption. The longer you stay, the wider cash's lead. ROI Calculator →
If You have limited tax appetite
Lease or PPA
Cash/loan's old tax-credit edge is gone anyway, and lease/PPA need no tax position. There is no longer a tax reason to prefer ownership. Post-48E Payback Calculator →
If You are in a NEM 3.0 / low-export-credit state (e.g., CA, specific utilities)
Lease/PPA tilt further in your favor
The third-party owner can optimize system sizing and pair storage to capture self-consumed kWh rather than dumped exports at low credit rates. NEM Policy Tracker →
Side-by-side scenario comparison
Two scenarios, four options each. All figures areillustrative estimates for a $3.0/W system under net metering at retail with a 2.5%/yr PPA escalator. Run the calculators for your actual numbers — these tables exist to show the shape of the trade-off, not to quote your deal.
Scenario A — $150/mo bill (~1,000 kWh/mo @ 15¢), 7 kW system (~$21,000)
| Option | Upfront | Yr-1 Monthly Net | Break-even | 20-yr Net (est.) | Best for |
|---|---|---|---|---|---|
| Cash | ~$21,000 | save ~$125 | ~14 yrs | ~+$9,000 | long horizon |
| Loan (8%/10yr) | $0 down | pay ~$253, lose ~$103/mo | ~18 yrs | worse than cash | — |
| Lease | $0 | save ~$40 | immediate | ~+$9,600 (no equity) | low bill, flexibility |
| PPA (14¢/kWh flat) | $0 | save ~$25 | immediate | ~+$6,000 | low bill, no upkeep |
Scenario B — $350/mo bill (~2,000 kWh/mo @ 17.5¢), 10 kW system (~$28,000)
| Option | Upfront | Yr-1 Monthly Net | Break-even | 20-yr Net (est.) | Best for |
|---|---|---|---|---|---|
| Cash | ~$28,000 | save ~$330 | ~7 yrs | ~+$52,000 | high bill, long horizon |
| Loan (8%/10yr) | $0 down | break-even mo 1–10, then +$330 | ~10 yrs | ~+$30,000 | cashflow-constrained |
| Lease | $0 | save ~$150 | immediate | ~+$25,000 | flexibility |
| PPA (14¢/kWh flat) | $0 | save ~$185 | immediate | ~+$30,000 | no upkeep |
Numbers are illustrative estimates assuming net metering at retail and a 2.5%/yr escalator on PPAs.Get your personalized numbers →
Get your personalized numbers
These four tools model your actual bill, rate, and sun hours — with the 48E pass-through built in. Free, no sign-up.
Questions & Answers
Can I still get the federal solar tax credit in 2026?
What is 48E pass-through and how much is it worth?
Is a lease or PPA better than owning after 48E?
Do I need tax appetite for solar to make sense now?
What happens to my lease or PPA if I sell my home?
Are solar loans still a good deal after 25D?
How do I compare a PPA rate to my utility rate?
Does net metering policy affect which option wins?
The decision framework above is the whole point of this page. Pick your branch, run the matching calculator with your real bill and rate, and compare two offers before you sign. The inversion does not make solar a bad deal — it just moved which financing path captures the most value for which kind of household.