The Section 25D 30% federal residential tax credit expired December 31, 2025. The information below reflects the current 2026 incentive landscape — not the pre-2026 landscape most rooftop solar sites are still showing.
Rooftop solar — for homeowners who want to go further.
Rooftop solar means installing photovoltaic panels on your home's roof to generate electricity. A typical 6–10 kW residential system offsets 50–100% of an average home's annual electricity use and lasts 25–30 years.
The economics changed on January 1, 2026, when the 30% federal residential tax credit (Section 25D) expired. State credits, SRECs, net metering, and the Section 48E commercial credit (which installers use for leased systems) are all still in effect.
Owned vs TPO (lease/PPA) — 2026
The tax credit landscape changed significantly on January 1, 2026. Here's what that means for each ownership type.
Is your home a good candidate?
Four questions determine whether rooftop solar makes sense for your specific situation.
Four ways to pay for rooftop solar.
Assumes 14.0¢/kWh · 3.4% annual rate increase (BLS historical) · 0.5%/yr panel degradation · loan at 6.99% APR / 25 yr · lease at 2% escalator · no federal credit (expired Dec 31, 2025).
What's still available after the federal credit expired.
Many states (NY, MA, SC, AZ, NM, others) offer credits between 10–25% of system cost — stackable with utility rebates.
Solar Renewable Energy Credits: in NJ, MA, DC, MD, PA, OH, IL, you earn credits per MWh generated and sell them to utilities.
Sell excess production back to the grid at retail or near-retail rates. Rules vary by state — 38 states have some form.
Most states exempt the added home value from solar from property tax reassessment.
Some utilities offer one-time rebates ($500–$2,500) on top of state programs. Often first-come, first-served.
Commercial ITC, available through Dec 31, 2027 for leased/PPA systems. Installer claims it and reduces your monthly payment.
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Most homeowners pay
$0 upfront.
Solar loans let you start saving immediately with no upfront cost. Monthly loan payments are typically less than your current electricity bill — you save from day one while building equity in your home.
America's largest solar lender. Fixed rates from 2.99%. Pre-qualify in under 2 minutes with no hard credit pull. Available in all 50 states.
Solar loans in 30+ states. Strong rates for Colorado and California customers. Mosaic specializes exclusively in clean energy financing.
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