Solar Panels in 2026: The Federal Tax Credit Is Gone — Here's What the Math Looks Like Now
The single biggest variable in the US residential solar market just changed. The federal 30% Investment Tax Credit — the financial backstop that made solar calculations work for millions of homeowners — expired at the end of 2025. In 2026, you're looking at full sticker price minus whatever your state offers, and not every state offers much. That doesn't mean solar is a bad investment. For most homeowners in high-rate states, it's still one of the strongest financial returns available — with annual ROI of 10–20% that genuinely beats the stock market average. But the calculus is now more location-dependent than ever, and the difference between a 6-year payback and a 14-year payback comes down to factors that no solar company's sales pitch will lead with. Here's the honest version of the math. What a System Actually Costs in 2026 The average installed cost of an 8kW residential solar system in the US in 2026 is $22,400–$24,800. Without the federal tax credit, ...