The safe harbor deadline has passed, but businesses can still claim the commercial solar Investment Tax Credit (ITC). Here’s what you need to know.
What was Safe Harbor?
Safe harbor allowed businesses to essentially stop the clock on the tax credit deadline.
Instead of the 2027 deadline, commercial solar projects that secured safe harbor before July 4, 2026, locked in the tax credits by legally “starting construction” with a 5% deposit and a signed contractor. Once safe harbor was in place, projects have until 2029 (if secured in 2025) or 2030 (if secured in 2026) to complete their project and still claim the full tax credit.
| Scenario | Rule | Deadline |
|---|---|---|
| Projects that were safe harbored by July 4, 2026 | Safe harbor rules allow projects to extend deadlines through 2029 or 2030 depending on when safe harbor was secured | Placed in service by 2029–2030 |
| New projects starting after July 4, 2026 | No safe harbor; must complete fully | Placed in service by 12/31/2027 |
That window has closed, and businesses that missed safe harbor must now have their solar projects (called solar arrays) placed in service, meaning fully installed, inspected, and producing energy, by the end of 2027. This means no shortcuts: all equipment, including panels, inverters, and battery storage, must be online and interconnected with the grid.
How the Commercial Solar ITC Works Today
The federal commercial solar tax credit offsets 30% of project costs. Not every commercial property will qualify, but where these adders apply, total ITC value can reach 40–50% of total project cost.
- Domestic Content Bonus (+10%)
- Energy Community Bonus (+10%)
- Low-Income Communities Bonus (+10-20%)
- FEOC (Foreign Entity of Concern) Compliance
Example: A $1M solar energy system in an energy community using domestic content can receive the 30% base credit ($300K) plus two 10% adders, totaling approximately $500K in clean energy tax credits. That’s roughly half the total system cost.
The credit reduces federal tax liability dollar-for-dollar and can be carried forward for up to 22 years if unused. For many companies, it keeps the ROI low on an asset designed to last 30-40+ years. Look at our project page to see ROI on different project sizes, building types, states, and industries.
What Businesses Need to Do Now
On average, commercial solar projects can take 3 to 18 months to go from contract to completion. These projects have extensive moving pieces, which is why working with a commercial solar expert like Artisun Solar makes all the difference.
With the 2027 deadline quickly approaching, it’s time to start the proposal and/or bid process to see what a commercial solar installation could do for your facility. Key steps include:
- Collecting 12 months of utility bills to assess energy usage; this allows your commercial solar partner to create a custom design for your facility based on real data rather than assumptions
- Evaluating financing options, such as a cash purchase, loans, or C-Pace
- Consulting tax advisors to understand how credits and depreciation apply
- Requesting additional proposal material and/or assets to present for board approval (if necessary)
The rest should be handled by your commercial solar partner, such as preparing the permitting, procurement, and interconnection requests and identifying eligibility for bonus credits such as domestic content or energy community adders. Artisun Solar has provided turnkey commercial solar development, construction, and monitoring since 2011 and will quickly identify the incentives your business can claim.
The Urgency: Rising Energy Costs and Grid Demand
Capturing energy tax credits is only one reason to act. The broader energy landscape is shifting in ways that make on-site solar generation increasingly valuable for managing rising energy costs.
A 2026 CEBA/NERA analysis found that restricting new solar and wind could raise U.S. electricity prices by about 6% on average between 2027–2033, adding roughly $40 billion in extra costs to commercial and industrial electricity users. Self-generation with solar insulates businesses from those increases.
Meanwhile, EIA projections reported by Reuters show U.S. power use is expected to set record highs in both 2026 and 2027 as AI-related electricity demand surges, adding stress to the grid and increasing the value of on-site renewable energy and battery storage.
Natural gas reliance increases when solar and wind are constrained which in turn exposes commercial users to fuel-price volatility.
Simple comparison: A business that offsets 40% of its load with solar can largely sidestep a 5-10% grid price increase over the next decade. This translates to tens of thousands in avoided utility bill costs annually for a mid-sized facility.
Solar + Energy Storage: Maximizing ITC and Managing Demand
Battery storage and energy storage systems can now qualify for the federal investment tax credit on a standalone basis if they meet minimum capacity requirements, making them a key part of commercial solar strategy.
Pairing solar with battery storage helps businesses reduce peak demand charges, shift solar production into evening hours, and improve resilience during grid outages.
Demand charges and time-of-use rates are expected to increase as utilities manage higher electricity demand driven by AI. Using energy storage systems along with solar panels offers greater financial savings than solar panels alone by helping reduce these peak charges.
Artisun Solar can model combined solar-plus-storage projects, evaluating how much battery capacity is justified by a customer’s load profile, local rate structures, and system cost considerations. This can apply whether you’re considering a new solar project or adding energy storage to an existing commercial solar array.
Take Action Now
Even though safe harbor’s deadline has come and gone, there’s still time to get your commercial solar project on the books without risking the ITC.
Start your free solar analysis with Artisun Solar today. It’s a no-pressure process that focuses on your facility, business, and energy needs. But the time to get that process started is today.
