Summary
On July 4, 2025, President Trump signed the One Big Beautiful Bill (OB3) Act into law. It makes significant changes to energy-related tax benefits pre-dating and modified by the Biden-era Inflation Reduction Act (IRA).
This document summarizes how the OB3 Act treats solar, storage, energy efficiency, and similar projects in commercial and multifamily real estate. A detailed fact sheet on RER’s website (here) provides a deeper analysis of the complex rules regarding tax incentives that may accelerate ROI for energy-related cap ex projects.
Key Takeaways
Energy-related building investments that begin construction in 2025 and after should consider:
Tax credits that start to phase out over the next one to five years (e.g., the Section 48E “tech neutral” credit for solar generation; the Section 179D deduction and 45L credit for energy efficiency projects; and the 30C credit for EV charging stations);
Tax credits that remain available well into the 2030s (e.g., Section 48E for energy storage); and
Permanent options for “full expensing” that may accelerate tax write-offs of energy-related building investments, regardless of Section 48E or other tax credit availability.
See the full fact sheet.