Solar Tax Credit & Incentives Guide 2026: What Changed and What Still Works
The 30% federal credit is gone for homeowners, but solar can still pencil out through bill savings, state incentives, and lower hardware costs.
The federal residential solar investment tax credit (ITC), Section 25D, expired on December 31, 2025. For homeowners buying solar in 2026 and beyond, there is no automatic 30% federal tax credit. This is not a marginal reduction — it is a full expiration. However, solar can still be a strong financial decision in many states. The economics now depend more on local electricity rates, state incentives, net metering rules, and system pricing. Commercial ITC (Section 48E) still applies to leased and PPA systems through 2027. This guide breaks down what changed, what still works, and how to evaluate solar incentives state by state.
Primary keyword: solar tax credit 2026
Reviewed·by RenewableCalc Data Team
Solar ROI Explained
Overview
The federal residential solar investment tax credit (ITC), Section 25D, expired on December 31, 2025. For homeowners buying solar in 2026 and beyond, there is no automatic 30% federal tax credit. This is not a marginal reduction — it is a full expiration. However, solar can still be a strong financial decision in many states. The economics now depend more on local electricity rates, state incentives, net metering rules, and system pricing. Commercial ITC (Section 48E) still applies to leased and PPA systems through 2027. This guide breaks down what changed, what still works, and how to evaluate solar incentives state by state.
Use this result
Use the calculator inputs first, then compare the result against local rates, incentives, roof conditions, and utility export rules.
Method, assumptions, and sourcesOpen this section when you want to audit the calculation behind the estimate.ShowHide
Calculation Method
Net solar cost = installed cost − verified state incentives − utility rebates − (commercial ITC if lease/PPA)
Key Assumptions
Federal residential clean energy credit (Section 25D) expired Dec 31 2025. 2026+ residential purchases default to 0% federal credit
Commercial ITC (Section 48E) still applies to lease and PPA projects through 2027
State incentives vary by utility territory, funding block, tax liability, and interconnection date
Standalone battery storage may qualify for Section 48E if paired with commercial solar or leased arrangements
Tax treatment should be verified with a qualified tax professional
Primary source for project-year eligibility, eligible property, and taxpayer caveats.
State incentive database
DSIRE
Used to cross-check state tax credits, exemptions, rebates, and renewable certificate programs.
State programs
NYSERDA, Mass DOER, NJ BPU, CPUC, Arizona Department of Revenue
Supports state-specific incentive examples and policy caveats.
Electricity and production context
EIA and NREL PVWatts
Used to explain why incentive value should be combined with bill-savings estimates.
Formula Assumptions Data Sources FAQ Related Links
What happened to the federal residential solar tax credit?
Section 25D of the Internal Revenue Code, which provided a 30% federal tax credit for residential solar installations, expired on December 31, 2025. It was not reduced to 26% or 22% — it expired entirely. Congress may reinstate or extend it, but as of 2026 Q2, no legislation has passed. RenewableCalc defaults to 0% federal residential credit for 2026+ projects. If a quote or calculator shows a 30% federal credit for a 2026 purchase, ask what authority that assumption is based on.
What did NOT change: Commercial ITC (Section 48E)
Section 48E, the commercial clean energy investment tax credit, remains in effect through 2027. This credit applies to systems owned by businesses, including solar installations financed through leases and power purchase agreements (PPAs). If you lease solar panels or sign a PPA in 2026, the installer or financing entity can still claim the 30% commercial credit, which may reduce your monthly payment. This is why lease and PPA rates can sometimes beat a cash-purchase economics in a post-25D market. The commercial credit steps down after 2027.
State incentives by priority solar market
With the federal residential credit expired, state incentives matter more than ever. Here is the current landscape for the top solar states:
California: SGIP is mainly storage-focused. The property tax exclusion for solar remains valuable. NEM 3.0 net billing means export timing affects savings. No statewide solar rebate program remains at previous levels.
Texas: No statewide solar rebate, but property tax exemption and local utility programs (Austin Energy, CPS Energy, Green Mountain) offer meaningful support. Net metering is utility-specific.
Florida: Sales tax exemption on solar equipment (6% savings) and property tax exemption. No state income tax credit. Utility rebates are limited outside municipal utilities.
New York: NY-Sun program provides per-watt rebates for qualifying systems. State tax credit up to $5,000. Property tax exemption. One of the strongest state incentive packages remaining.
Arizona: State income tax credit up to $1,000. Property tax exemption for solar. Salt River Project and APS have net metering or export rate programs.
Massachusetts: State income tax credit up to $1,000. SMART program pays per-kWh for qualifying systems. Property tax exemption. Combined state + utility support remains among the best.
New Jersey: SuSI (Successor Solar Incentive) provides per-kWh payments for qualifying systems. Sales tax exemption. Property tax exemption. TREC program transitioning.
Colorado: Sales tax exemption on solar equipment. Property tax exemption varies by county. Local utility rebates through Xcel Energy and others.
How incentives affect payback without the federal credit
Without the 30% federal credit, payback periods are longer, but not necessarily prohibitive. A $30,000 system in New York with the state tax credit ($5,000), NY-Sun rebate ($0.20/watt = $1,200 on a 6 kW system), and annual bill savings of $1,800 may still break even in 8-11 years. The same system in Texas with no state tax credit and lower electricity prices might take 12-15 years. The key change is that state-level incentives are the primary lever, not a federal one. Use the Solar Payback Calculator with your state defaults to see the real picture.
Incentive mistakes to avoid in 2026
Do not assume the 30% federal credit will be reinstated as part of your financial planning. Do not accept a quote that subtracts a 30% federal credit from 2026 pricing without written confirmation of the legal basis. Do not assume state incentives are available statewide — many have utility-specific or funding-block limits. Do not double count net metering as both bill savings and incentive income. Do not assume a battery improves payback just because it qualifies under some credit rules. Verify every incentive line item against the official program page, not a salesperson's summary.
Check current solar incentives
Frequently Asked Questions
The federal residential solar tax credit (Section 25D) expired on December 31, 2025. For 2026+ residential purchases, RenewableCalc defaults to 0% federal credit. No legislation has reinstated it as of mid-2026.
page_type: Guide | guide_name: Solar Tax Credit & Incentives Guide 2026: What Changed and What Still Works | overview_summary: The federal residential solar investment tax credit (ITC), Section 25D, expired on December 31, 2025. For homeowners buying solar in 2026 and beyond, there is no automatic 30% federal tax credit. This | data_sources: IRS Residential Clean Energy Credit (Section 25D sunset) + Section 48E(federal_tax_credit_status), DSIRE(state_incentive_database), NYSERDA, Mass DOER, NJ BPU, CPUC, Arizona Department of Revenue(state_programs), EIA and NREL PVWatts(electricity_and_production_context) | primary_keyword: solar tax credit 2026 | last_updated: 2026-06-15