Project Summary
When a solar panel manufacturer set out to develop a higher-efficiency cell architecture that also had to survive 25 years of continuous outdoor exposure without meaningful power loss, the technical challenge was significant from the start. Efficiency gains in cell design often came at the cost of long-term durability, and the team had to validate that new encapsulation and backsheet materials could withstand UV exposure, thermal cycling, and humidity without degrading over the panel’s warranted lifespan. The team didn’t fully realize how much of that development work qualified under the IRS R&D tax credit until a formal study was completed. By satisfying the four-part test, the company unlocked $149,400in federal R&D tax credits and $55,400 in state credits, amounting to $204,800 in total savings.
Project Overview
To qualify for the R&D Tax Credit, each activity must satisfy the IRS four-part test. CSSI’s analysis confirmed that the qualifying activities identified for this company met all four criteria:
- Business Component: The company developed a next-generation solar cell architecture and encapsulation system, integrating higher-efficiency cell designs with improved backsheet and encapsulant materials engineered to extend module lifespan and power output, a direct effort to develop a new or improved business component under IRC 41.
- Elimination of Uncertainty: At the outset, it was unknown whether the new cell architecture could achieve target conversion efficiency gains while the accompanying encapsulation materials held up to decades of UV exposure, thermal cycling, and humidity without accelerating degradation. The team worked systematically to resolve those uncertainties.
- Process of Experimentation: Process engineers and materials scientists ran iterative lab-scale cell fabrication and encapsulation trials, subjecting prototype panels to accelerated weathering chambers, thermal cycling, and electroluminescence imaging, refining cell and material formulations based on measured efficiency and degradation outcomes at each stage.
- Technological in Nature: The work relied on materials science, electrical engineering, and photovoltaic semiconductor physics.
|
Employee Wages |
$850,000 |
|
Supply and Contractor Costs |
$395,000 |
|
Total QRE’s |
$1,245,000 |
|
Total State Credit |
$55,400 |
|
Total Federal Credit |
$149,400 |
Study Results
The analysis identified a total of $1,245,000 in Qualifying Research Expenses (QREs) across the tax year. Employee wages accounted for the largest share, with $850,000 attributable to process engineers, materials scientists, and quality engineers directly engaged in qualifying research activities. Supply costs contributed an additional $260,000 in qualifying expenses, primarily from silicon wafers, encapsulant films, and backsheet substrates consumed in prototype fabrication and durability testing. Contractor expenses added $135,000, representing the 65% allowable portion of third-party research costs under IRC 41. Based on those qualifying expenses, the study produced a federal R&D Tax Credit of $149,400 and a state R&D Tax Credit of $55,400, bringing the company’s total tax credit benefit to $204,800.
Key Takeaways
- Core solar R&D qualifies. The uncertainty this company faced, whether a higher-efficiency cell design could hold up to decades of real-world weathering without degrading, is exactly the type of technical uncertainty the IRS credit is designed to reward.
- The workforce is the biggest driver. The $850,000 in qualifying wages reflects process engineers, materials scientists, and quality engineers doing their normal technical work, work that generates credit eligibility hourly.
- Supply and material costs compound the benefit. The $260,000 in supply costs, covering silicon wafers, encapsulant films, and backsheet substrates consumed in prototype and durability testing, added meaningfully to the total credit.
- Contractor costs are recoverable. The $135,000 in contractor expenses shows that outside testing labs and certification vendors can contribute significant qualifying costs, a benefit many solar manufacturers leave on the table.
- Solar manufacturing is a credit hotspot. Efficiency targets, material science, and durability standards are constantly evolving, so high technical uncertainty is the norm rather than the exception, making R&D credit analysis especially valuable for solar and clean energy manufacturers.
Ready to Discover Your R&D Tax Credits Potential?
If your company is developing or improving products, formulas, or processes, you may be leaving significant tax credits on the table. CSSI’s engineering-based approach ensures every qualifying activity is identified, documented, and defensible, so you capture the full value of the work your team is already doing.
Request a Free Analysis today and find out what your business could qualify for.
