The 30% residential solar credit is gone. What replaced it is not a credit.
Section 25D ended for systems placed in service after 31 December 2025. Section 48E did not — and that asymmetry now decides how most American homes get solar.
Home / Policy
What actually moved
Solar economics are set by policy far more than by hardware. This is what changed, what it does to the arithmetic, and — where it matters — what is still unknown. Every claim links to the agency that made the rule, not to someone else's summary.
Editorial standard. Primary sources where they exist. Every piece
carries the date its facts were last checked against those sources. Where guidance does
not exist, these pages say so rather than guessing.
RSS.
The 4 July begin-construction deadline has passed. What that means for commercial projects.
Projects that began construction after 4 July 2026 face a hard placed-in-service date of 31 December 2027. Two safe harbours decide which side of the line you are on.
Net billing is the default now, and it changes what a solar panel is for
California settled it in D.22-12-056. Exports are paid at grid value, not retail — which turns solar from a meter-spinning play into a self-consumption one.