Are You Prepared for the July 4 Commercial Solar Deadline?

Most years in commercial solar, sales and construction activities spike in the fourth quarter as developers and asset owners race to qualify projects for tax credits by the end of the calendar year.

In 2026, the major milestone is July 4. Commercial customers will have to Safe Harbor projects before July 4 to preserve an existing four-year timeline to place projects into service and monetize available federal tax credits before they disappear.

This post will share the latest and most reliable industry guidance on how commercial solar projects can comply with the One Big Beautiful Bill Act (OBBB), President Trump’s signature tax-and-spend legislation signed into law on July 4, 2025. We will also explain some of the reasons why commercial solar is poised to see a surge of investment following passage of OBBB.

If you would like to explore commercial solar investment opportunities in Arizona and California, talk to Solar Gain. With a portfolio of more than 230 commercial projects, we can help you maximize value during development and performance during operations.

30% Tax Credit Plus Bonuses

The federal investment tax credit (ITC), available to clean energy technologies for almost half a century, has been valued at 30 percent of system costs for most years since 2005. After a series of attempts by Congress to cut and phase out portions of the ITC, the 2022 Inflation Reduction Act sought to establish long-term certainty and drive more private investment to clean energy markets.

One tax credit sweetener is a 10 percent bonus credit for projects in energy communities, areas reliant on fossil fuels that have been most impacted by the clean energy transition.

Another sweetener is a 10 percent bonus for projects using domestic content where key materials and manufactured products have been sourced from producers here in the US.

OBBB removed long-term certainty by setting new deadlines to commence construction and tightening rules for projects seeking to lock in tax credits before assets can be placed into service.

Projects below 1.5MW AC can Safe Harbor the tax credits for four years by purchasing at least 5 percent of the project equipment before July 4, 2026. Projects over 1.5MW need to commence construction before July 4 to lock in the 30 percent ITC plus bonus credits for four years. After July 4, projects can claim the 30 percent ITC plus bonus credits only if they can place assets into service by the end of 2027.

While OBBB preserved the bonus credits, it also added a bonus tax deduction for all projects that qualify for the ITC. Instead of deducting system costs gradually, asset owners can deduct 100 percent in the first year.

Strong Demand for Commercial Solar

OBBB signaled a major shift in financing and development for all segments of the solar market. Nobody knows what the policy landscape will look like in 2028 and beyond. By the same token, we can only guess what new energy storage technologies will be available to integrate with commercial solar, or what strategies will be available to mitigate the risk of rising utility bills.

But one thing we know for certain is this: federal tax incentives have never been better than they are right now, and that is bolstering already-strong demand for commercial solar projects.

In 2025, commercial solar was on pace to set an annual record for installations with more than 2.3 gigawatts (GW) of new capacity set to come online, according to the Q4 2025 Solar Marketing Insight Report published by Solar Energy Industries Association (SEIA) and Wood Mackenzie (WoodMac).

The pipeline for commercial solar projects is proving resilient because of solar’s proven ability to reduce energy costs and protect commercial facilities from utility service disruptions. SEIA and WoodMac anticipate “a surge” in commercial solar installations as developers rush to meet tax credit deadlines followed by “strong project volumes” as retail rates increase and improve project economics.

Turnkey Solutions for Any Business

Businesses seeking to monetize available tax credits for commercial solar will have to perform due diligence quickly. For a proven partner with extensive experience providing engineering, procurement, and construction (EPC) services to businesses in Arizona and California, start with an energy evaluation and a project proposal from Solar Gain.

Our expert team will review your energy usage and financial goals. We will also assess your project site to estimate energy output and the impact that system production can have on your energy costs. Safe Harboring your project by July 4th takes significant effort. We recommend contracting projects by May 15 to leave enough time to complete the Safe Harbor process by July 4.

This is the first step in a process Solar Gain has followed to deploy commercial solar projects at more than 230 sites since 2008, serving industrial facilities, churches, schools, multifamily housing, hotels, office buildings, and more.

Solar Gain specializes in developing custom solutions for commercial and industrial systems. We provide comprehensive services from project and portfolio analysis and financing straight through operations and maintenance.