Cleantech Tax Credits Guide | IRA, ITC, PTC & R&D Credits

The Inflation Reduction Act created over $270 billion in clean energy tax incentives. Cleantech startups can stack multiple credits, but the eligibility rules and prevailing wage requirements are complex.

Inflation Reduction Act: The Landscape for Cleantech

The Inflation Reduction Act (IRA), signed into law in August 2022, represents the largest climate investment in US history. For cleantech startups, the IRA expanded and extended multiple tax credits that directly affect project economics and company valuation. The key credits include the Investment Tax Credit (ITC) under IRC Section 48 and the new Section 48E clean electricity ITC, the Production Tax Credit (PTC) under IRC Section 45 and the new Section 45Y clean electricity PTC, the Section 45X Advanced Manufacturing Production Credit, the Section 45V Clean Hydrogen Production Credit, and the Section 30C Alternative Fuel Refueling Property Credit. The IRA also introduced transferability under Section 6418, allowing companies that cannot use credits (because they have no tax liability) to sell those credits to unrelated taxpayers for cash. This is a game-changer for pre-revenue cleantech startups. Prior to the IRA, monetizing tax credits required complex tax equity structures with banks or insurance companies. Now, a startup with a $500,000 ITC can sell it to a profitable corporation for approximately $0.90 to $0.95 per dollar of credit.

Investment Tax Credit (ITC) for Clean Energy Projects

The ITC under Section 48 provides a credit equal to a percentage of the cost of qualifying clean energy property placed in service. The base credit rate is 6%, but it increases to 30% if the project meets prevailing wage and apprenticeship requirements. For projects under 1 MW of capacity, the prevailing wage and apprenticeship requirements do not apply, and the full 30% rate is available automatically. Qualifying property includes solar energy systems, small wind turbines, geothermal heat pumps, battery storage (with a minimum capacity of 5 kWh), biogas property, and microgrid controllers. The ITC can be further increased by 10% bonus credits for projects located in energy communities (areas with closed coal mines or coal-fired power plants, or with significant fossil fuel employment) and 10% for projects meeting domestic content requirements (steel, iron, and manufactured products produced in the US). A cleantech startup installing a $2 million solar-plus-storage system that meets prevailing wage, domestic content, and energy community bonuses could receive an ITC of up to $1 million (50% of cost). Your tax advisor needs to verify that each bonus criterion is documented and substantiated.

Advanced Manufacturing Production Credit (Section 45X)

Section 45X provides a per-unit production credit for domestic manufacturing of clean energy components. The credit amounts are specific: $12 per square meter for photovoltaic wafers, 4 cents per watt for solar cells, 7 cents per watt for solar modules, $35 per kWh for battery cells, and $10 per kWh for battery modules, among others. For cleantech startups manufacturing components in the US, Section 45X provides a predictable, per-unit cash benefit that improves unit economics. The credit is available for components produced and sold to unrelated parties from January 1, 2023, through December 31, 2032, with a phase-down beginning in 2030. Because Section 45X is a production credit (not an investment credit), it is claimed annually based on units produced and sold. This creates a direct link between manufacturing output and tax benefit. For pre-revenue startups, the transferability provision under Section 6418 allows you to sell these credits as soon as you begin production, providing early cash flow before the business reaches profitability.

Stacking Credits: R&D Plus Clean Energy

Cleantech startups can claim R&D credits under IRC Section 41 alongside clean energy credits, but coordination is required to avoid double-counting. The R&D credit applies to qualified research expenditures for developing new or improved products, processes, or software. For a startup developing a novel battery chemistry, the laboratory costs, engineering salaries, prototype materials, and testing expenses all qualify for the R&D credit. However, expenses that form the basis of another tax credit (such as the ITC) generally cannot also be used for the R&D credit. The IRS requires that taxpayers reduce their Section 174 deduction by the amount of R&D credit claimed, under Section 280C(c). Planning should allocate expenses between credits to maximize total benefit. In many cases, R&D activities occur during the development phase before any clean energy property is placed in service, while ITC and PTC apply to deployed assets. This natural timing separation often avoids overlap, but your tax advisor should map each expense category to the appropriate credit.

How SpryTax Supports Cleantech Companies

We work with climate tech startups across the energy, transportation, and built environment sectors. Our team identifies all available credits at the federal and state level, prepares the required documentation (including prevailing wage certifications, domestic content attestations, and R&D credit studies), and handles credit transfers under Section 6418 when direct monetization is the best strategy. For seed and Series A cleantech companies, the combination of R&D credits, clean energy credits, and credit transferability can provide $100,000 to $1 million or more in annual cash benefit, significantly extending runway and improving the path to profitability.

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Tax Credits for Cleantech Companies: IRA, ITC, PTC, and R&D Explained