What You Need to Know Before 2026 about Renewable Energy Tax Credits

As 2025 draws to a close, major changes are on the horizon for federal solar tax incentives—and they could dramatically impact your bottom line. If your business is planning a renewable energy project, understanding these deadlines and rules is critical to securing the full 30% Investment Tax Credit (ITC) and avoiding costly compliance pitfalls.

The Big Picture: FEOC Rules and OBBBA Changes

Starting January 1, 2026, new Foreign Entity of Concern (FEOC) restrictions take effect. These rules prohibit the use of solar hardware linked to countries such as China, Russia, Iran, and North Korea. At the same time, the One Big Beautiful Bill Act (OBBBA) modifies ITC safe harbor provisions, tightening eligibility for projects that haven’t begun construction by July 4, 2026.

Why does this matter? Projects that fail to meet these requirements risk losing their entire tax credit—not just a portion—while also facing higher costs and longer lead times for compliant equipment.

Key Deadlines You Can’t Miss

Before July 4, 2026

Large Solar Projects (>1.5 MW): Must satisfy the Physical Work Test (substantial on-site work) to qualify for ITC. The 5% cost safe harbor ended for these projects after September 2, 2025.
Small Solar Projects (≤1.5 MW): Still have flexibility—can use either the 5% cost safe harbor or the Physical Work Test.
FEOC Impact: Projects safe-harbored by December 31, 2025, avoid stringent FEOC rules and maintain access to full credits.

After December 31, 2025

New projects face stricter sourcing requirements and FEOC restrictions.
Using hardware from prohibited entities could mean losing the entire tax credit.

Safe Harbor Explained: Your Best Protection

Safe Harboring locks in your tax credit eligibility and shields your project from future FEOC restrictions. It’s been part of the ITC framework for years and gives you up to four years to complete installation if done before July 5th, 2026.

Two IRS-approved methods:

Physical Work Test: Begin substantial construction and maintain continuous progress.
5% Cost Test: Pay or incur at least 5% of total project costs before the deadline. For smaller projects, this is the most practical option.

Real-World Example: Cold Storage Facility Secures Big Wins

One cold storage company customer of ours took proactive steps in late 2025 to meet the safe harbor requirements for their planned solar installation in 2026. By locking in their eligibility before the FEOC rules take effect, they secured the full 30% Investment Tax Credit – a savings worth hundreds of thousands of dollars on a multi-megawatt system. For a business with energy-intensive refrigeration needs, this move doesn’t just reduce upfront costs; it delivers long-term operational savings by offsetting high electricity demand with on-site renewable generation. In an industry where power costs can make or break margins, this strategic decision positions them for both financial stability and sustainability leadership.

Why Acting Now Matters

Waiting until 2026 could mean:

Losing eligibility for the 30% ITC.

Paying more for FEOC-compliant hardware as supply tightens.

Facing installation delays due to equipment shortages and utility backlogs.

By safe-harboring in 2025, your project is protected until the end of 2029. If you wait until 2026, you extend to 2030—but by then, FEOC rules will already be in force.

Next Steps for Commercial Customers

Accelerate Construction: Start substantial physical work or secure safe harbor before July 4, 2026.

Audit Supply Chains: Ensure all components meet FEOC compliance for projects starting in 2026 and beyond.

Document Everything: Maintain clear records to prove “beginning of construction” to the IRS.