Solar Companies
The R&D Tax Credit Explained
The R&D (Research & Development) Tax Credit is a federal (and often state) incentive that rewards companies innovating in science and technology. For solar energy companies, this includes designing, improving, or testing solar panels, mounting systems, energy storage, or installation techniques.
Because the solar industry is driven by efficiency, innovation, and sustainability, companies in this space are often ideal candidates for the R&D credit—even if they don’t think of themselves as doing “research.”
QUALIFYING ACTIVITIES
- Designing or improving solar panel efficiency or layout
- Engineering new mounting or racking systems
- Innovating solar tracking mechanisms
- Improving inverter technology
- Integrating battery storage systems with solar arrays
- Developing software for solar monitoring or optimization
- Prototyping new installation methods for unique building environments
- Conducting PV material testing and durability studies
- Enhancing system integration with smart grids or home automation
WHAT cAN BE CLAIMED
Your company can claim Qualified Research Expenses (QREs) such as:
- Wages for engineers, designers, and technical staff
- Prototype materials and components used in development
- Cloud-based software platforms for energy monitoring or system modeling
- Contract R&D from third-party specialists
- Simulation software for system testing
- Documentation, design schematics, and testing records
WHAT DOESN'T QUALIFY
Some activities are excluded from the credit, including:
- Installation work without innovation
- Routine maintenance or troubleshooting
- Standard commercial solar panel resale
- Sales, marketing, or business development efforts
- Cosmetic or non-technical improvements
- Work done outside the U.S.
- Duplication of existing products or solutions without innovation
HOW THE CREDIt WORKS
- Startups and small solar firms (less than 5 years old and under $5M in revenue) can apply the R&D credit toward payroll taxes (up to $500,000/year)
- Established companies can apply the credit to income taxes
- Any unused credit can be carried forward up to 20 years
- Most U.S. states also offer their own R&D tax credits
Average R&D Tax Credit for Solar Companies
Company Type | Typical Annual Credit |
Small Installer with Custom Engineering | $20,000 – $100,000 |
Mid-Sized Equipment Manufacturer or EPC Firm | $100,000 – $500,000 |
Large Panel Manufacturers or Tech Innovators | $500,000 – $2,000,000+ |
Credit amounts depend on the extent of design, testing, and innovation.
For Small to Mid-Sized Solar Companies
Smaller solar firms often qualify for R&D credits when:
- Designing custom solar arrays for challenging sites
- Testing alternative materials or racking systems
- Creating energy management software or dashboards
- Innovating mobile or off-grid solar solutions
- Developing dual-use solar structures (e.g., carports, green roofs)
For Larger Solar Companies or Multi-State Operations
Larger companies may qualify for substantial credits by:
- Running dedicated product development teams
- Developing new PV cell chemistries or module designs
- Integrating AI/ML into solar performance analytics
- Conducting pilot projects for community solar or microgrid systems
- Leading battery + solar R&D projects
- Creating custom software platforms for utility-scale operations
