Can My Building Still Get the 30% Commercial Solar Tax Credit in 2026?
The short answer: yes. A commercial building can still qualify for a federal solar Investment Tax Credit (ITC) of up to 30% in 2026. But the rules have changed. When your project began construction and when it is placed in service matter more than ever.
For eligible projects placed in service after December 31st, 2024, the former Section 48 Energy Investment Tax Credit has been replaced by the technology-neutral Section 48E Clean Electricity Investment Credit. Its base credit is generally 6%, with an increased rate of up to 30% available when applicable prevailing wage and registered apprenticeship requirements are satisfied.
Then came another change.
Federal legislation enacted in 2025 accelerated the end of Section 48E eligibility for many wind and solar projects. For commercial building owners evaluating solar today, that creates two dates worth knowing: July 4, 2026 (which has passed) and December 31st, 2027.
It’s confusing. But our experts at Douglass Colony Group have a handle on the ever-changing rules and regulations and know exactly how to guide you through the solar process for the quality of your build, as well as the benefits we might be able to help you attain.
This article highlights what commercial building owners need to know about the commercial solar tax credit in 2026, what the 30% credit actually requires, and why the next step may be less about asking whether solar makes sense and more about how quickly your project can realistically move.
The Short Answer: Yes, But 2026 Isn’t 2024
Commercial solar installation starting today faces a much shorter timeline than owners may remember from earlier federal incentive guidance.
Under the current rules, applicable solar facilities that began construction after July 4, 2026 generally need to be placed in service before January 1, 2028, to qualify for Section 48E. Projects that properly began construction by July 4, 2026 are treated differently under the termination provisions.
That makes project planning especially important right now.
What Is the Commercial Solar Investment Tax Credit?
The Section 48E Clean Electricity Investment Credit, often still referred to conversationally as the commercial solar ITC, provides a federal income tax credit based on qualifying investment in clean electricity property.
For commercial solar, there are two numbers that matter:
- 6% base credit
- Up to 30% credit for projects satisfying applicable prevailing wage and registered apprenticeship requirements, or qualifying for an applicable exception
In other words, the phrase “30% solar tax credit” can make the incentive sound automatic. For many commercial projects, it isn’t. The 30% rate is the increased credit amount, and labor compliance can be a major part of reaching it.
Prevailing wage requirements generally mean laborers and mechanics involved in construction, alteration, or repair must be paid no less than the applicable prevailing wage rates. The apprenticeship provisions also require specified use of workers from registered apprenticeship programs. Certain smaller facilities and other limited circumstances can qualify for exceptions.
That’s why the right commercial solar contractor needs to think beyond panels and production. There’s the system you’re building. And there’s the process required to get it built correctly.
Do You Still Qualify in 2026? The Deadline That Changed Everything
Federal law now generally terminates Section 48E eligibility for applicable solar facilities that begin construction after July 4, 2026, and are placed in service after December 31, 2027.
For a building owner starting the conversation in September 2026, July 4 has already passed. That does not automatically mean your project has lost the commercial solar ITC. It means the path has changed.
If Your Project Began Construction by July 4, 2026
Current IRS guidance generally uses the Physical Work Test to establish that an applicable solar facility began construction before the deadline. And “begin construction” doesn’t necessarily mean someone had to put a shovel in the ground.
The IRS focuses on whether physical work of a significant nature began. The test also focuses on the nature of the work—not a fixed dollar amount or percentage of the project.
There is an important exception. Solar facilities with maximum net output of 1.5 MW AC or less may also use a 5% safe harbor to establish beginning of construction under Notice 2025-42. If your project was underway before July 5 but you’re unsure whether the work meets the IRS standard, this is exactly the kind of question that deserves review with your project team and tax advisor.
If Your Project Is Starting Now
If construction did not begin by July 4, 2026, the conversation isn’t over.
Under current law, an applicable commercial solar facility beginning construction after July 4, 2026 can still potentially qualify for Section 48E if it is placed in service by December 31, 2027.
That creates a relatively tight runway for design, engineering, procurement, permitting, installation, interconnection, commissioning, and whatever surprises the building itself decides to throw into the mix.
This is where early coordination becomes valuable. Before promising a schedule, an experienced commercial solar contractor should understand the roof, structure, electrical conditions, system design, permitting path, utility requirements, procurement needs, and other scopes that could affect delivery.
At Douglass Colony Group, that full-building perspective is already part of how we work.
How Much Is the Commercial Solar ITC Really Worth?
Depending on the project, Section 48E includes potential bonus credit opportunities that can increase the total incentive even beyond 30%.
Domestic Content Bonus
Qualifying projects that meet domestic content requirements may receive an additional 10 percentage points when the project also meets the requirements for the 30% increased credit rate. For projects beginning construction in 2026, IRS instructions currently specify a 50% adjusted percentage requirement for manufactured products, alongside applicable steel and iron requirements.
Energy Community Bonus
A qualified facility located in a designated energy community may also qualify for an additional 10 percentage points when the increased Section 48E rate applies.
Low-Income Communities Bonus
Certain solar facilities under 5 MW may be eligible for a 10- or 20-percentage-point bonus through the Clean Electricity Low-Income Communities Bonus Credit Amount Program. Unlike the standard credit, this is an allocation-based program with its own eligibility and application process.
*There are also new prohibited-foreign-entity and material-assistance restrictions affecting Sections 45Y and 48E, including rules applicable to certain projects beginning construction after December 31, 2025. That makes procurement and tax review another important part of 2026 project planning.
Don’t Forget Depreciation
The ITC isn’t the only potential federal tax benefit.
Certain qualified clean-energy facilities and property placed in service after 2024 may qualify as five-year property under the Modified Accelerated Cost Recovery System (MACRS). That’s depreciation—not an additional ITC—but it can further affect the economics of a commercial solar investment.
The investment credit can also affect the property’s depreciable basis, so this is another area to run through your tax professional rather than treating two incentives as simple addition.
What Colorado and Denver Building Owners Should Weigh Right Now
Federal incentives matter. But they shouldn’t be the only reason a commercial solar project works.
For commercial solar in Denver and Colorado, we start with the building itself.
How much electricity does it use? When does it use it? What usable roof or site area exists? What condition is the roof in? How does solar integrate with the existing roof system? What structural, electrical, utility, permitting, access, or equipment constraints could affect the installation? Those questions tell us much more than “How many panels can we fit up there?”
We have seen firsthand how project-specific those answers can become.
At The Hub in Denver, for example, the building rises more than 100 feet. A standard installation approach wasn’t the answer, so our team developed a custom hybrid of ballasted and attached racking to safely secure the panels. The completed system included a 100 kW photovoltaic array.
More recently, we installed a 41.18 kW commercial solar system at Urban Peak in Denver using custom bifacial Lumos Solar modules. The system helps the nonprofit reduce operating costs while supporting its broader sustainability goals.
Capturing the Credit Starts With Building the Right Project
Douglass Colony Group works with owners and their tax advisors to provide the project information needed to evaluate incentives, while our team focuses on what we know best: turning a complicated commercial solar project into something buildable.
We provide commercial solar audits, design, permitting, installation, monitoring, and maintenance throughout Denver, Colorado, and the Rocky Mountain region. Because our expertise extends across solar, commercial roofing, metals, waterproofing, and other building-envelope systems, we can view the installation as part of the entire building.
Frequently Asked Questions About the Commercial Solar Tax Credit in 2026
Is the 30% commercial solar tax credit still available in 2026?
Yes. Qualifying commercial solar projects may still receive the 30% Section 48E Clean Electricity Investment Credit in 2026 when the applicable requirements are met. However, solar projects beginning construction after July 4, 2026 generally must be placed in service by December 31, 2027 to remain eligible under current law.
What is Section 48E, and how is it different from Section 48?
Section 48E is the technology-neutral Clean Electricity Investment Credit that applies to qualified facilities and energy storage technology placed in service after December 31, 2024. It replaced the previous Section 48 framework for new clean-electricity facilities and focuses on qualifying zero-emissions electricity generation.
Do commercial solar projects have to meet prevailing wage requirements to get the full 30%?
Generally, projects must satisfy applicable prevailing wage and registered apprenticeship requirements to increase the Section 48E base rate from 6% to 30%. Certain exceptions exist, including for some smaller facilities, so eligibility should be evaluated on a project-by-project basis.
What’s the difference between the residential and commercial solar tax credit?
They’re separate federal credits. The residential Section 25D Residential Clean Energy Credit applied to qualifying residential property installed through December 31, 2025, and is no longer available for property placed in service after that date. Commercial projects can instead potentially qualify under Section 48E.
Can I combine the commercial solar ITC with depreciation?
Potentially, yes. Qualified clean-energy property may be eligible for five-year MACRS depreciation in addition to the Section 48E credit, although claiming an investment credit can affect depreciable basis. Your tax advisor should calculate how the provisions apply to your project.
What’s the deadline to claim the commercial solar ITC?
For applicable solar facilities, timing now depends on when construction began. Projects that properly began construction by July 4, 2026 may avoid the new solar credit termination rule. Projects beginning construction after July 4, 2026 generally must be placed in service by December 31, 2027 to qualify under current Section 48E rules.
Don’t Just Ask Whether Solar Still Qualifies. Find Out Whether Your Building Does.
The 30% commercial solar tax credit is still within reach in 2026. But for many projects starting today, the window is considerably tighter.
At Douglass Colony Group, we bring commercial solar, roofing, metals, waterproofing, and decades of construction problem-solving under one roof. We can evaluate your building, identify the challenges early, and help build a commercial solar installation around what your property actually needs.
Thinking about commercial solar in Colorado? Talk with Douglass Colony Group about your building, project timeline, and what’s possible before the current federal incentive window closes.
This article is provided for general informational purposes only and does not constitute tax, accounting, or legal advice. Federal tax-credit eligibility depends on project- and taxpayer-specific circumstances. Building owners should consult a qualified tax professional regarding Section 48E eligibility and incentive calculations.