Avoiding Costly Tax Mistakes in Solar Development

EP 18 — Aon’s Marc Nickel on the 3 Risk “Buckets” Every Developer Needs

Marc Nickel, Sr. VP of M&A and Transaction Solutions at Aon, explains how tax insurance has become essential infrastructure for commercial solar projects and why recapture risk is far less dangerous than most people think.

The commercial solar landscape has fundamentally transformed since the Inflation Reduction Act unlocked $800 billion in private investment, but most developers are stumbling over basic tax compliance while missing massive opportunities. Marc Nickel, Sr. VP of M&A and Transaction Solutions at Aon, brings a unique perspective as both a former tax attorney and current insurance broker, having witnessed how tax credit transferability has democratized solar development and created entirely new risk management requirements. His insights highlight why documentation quality matters more than technical performance, and how smart developers are using tax insurance to unlock previously uneconomical markets.

The IRA has bent cost curves so dramatically that solar now makes sense in states like Oklahoma where cheap natural gas previously made renewable energy unviable. The ability to stack investment tax credits up to 70% through energy community designations, domestic content adders, and low-to-moderate income qualifications has opened markets that sophisticated developers are now racing to capture. But success requires understanding the three critical risk buckets: structural risk in your monetization strategy, qualification risk around equipment and compliance requirements, and recapture risk that’s statistically far less dangerous than most developers assume.

Topics discussed:

• How the Inflation Reduction Act’s $800 billion private investment surge created 300,000 new jobs while fundamentally reshaping commercial solar economics across previously unviable markets.
• The three-bucket risk framework for solar tax insurance: structural risk in monetization strategies, qualification risk around compliance and equipment specifications, and recapture risk management.
• Why cost segregation studies and proper appraisals represent make-or-break documentation that determines whether $50 million projects qualify for their full investment tax credit value.
• How tax credit transferability transformed complex partnership structures into simple transfer agreements, democratizing access for small-scale developers previously shut out of the market.
• The evolution of tax equity investor requirements from selective 40% coverage to full wrap insurance at 125% of ITC value, including penalties, interest, and contest cost protection.
• Strategic timing for tax insurance consideration based on when monetization strategies become clear rather than waiting until project completion or commissioning.
• Documentation best practices for IRS audit preparation, including maintaining clean audit trails from EPC contractors and ensuring third-party record accessibility.
• How bonus adders including energy community designations, domestic content requirements, and low-to-moderate income qualifications enable 70% investment tax credits that make solar viable in traditionally uneconomical regions.
• Common prevailing wage and apprenticeship compliance mistakes that can trigger IRS disputes, plus available cure payment mechanisms to restore full credit value.
• Portfolio insurance strategies for developers with multiple projects, including designing standardized project parameters to achieve economies of scale while managing underwriting complexity.