By Shaun Keegan
Once seen as a sustainability play, rooftop solar is now a financial strategy for commercial real estate owners. By leasing unused rooftop space, owners can generate new, long-term revenue streams and increase asset value, all without capital expenditure. With federal incentives in flux and state programs expanding, timing has never been more critical to lock in peak rooftop solar lease rates.
Recent guidance from the Department of the Treasury, coupled with the One Big Beautiful Bill Act, has shortened the window to claim federal incentives on rooftop solar. Commercial Real Estate (CRE) owners must now move quickly to capture the full 30% Investment Tax Credit (ITC) and secure financial benefits, while delays could mean lower lease rates and diminished returns.
- Through Dec. 31, 2025, projects qualify for the full 30% ITC with no restrictions, keeping lease rates at their peak.
- From Jan. 1 to July 4, 2026, new sourcing restrictions on solar equipment will take effect, likely raising project costs and reducing lease payments.
- After July 4, 2026, new projects will no longer be eligible for the ITC.
The primary model to pursue ahead of the ITC sunset is Front-of-the-Meter (FTM) solar, which allows property owners to monetize rooftop space through lease payments while avoiding the complexities of purchasing the power produced. While rooftop solar will remain viable after the full sunset of the ITC, lease rates are expected to decline.
CRE owners are working with proven development partners to capture the full value of the ITC, finalizing solar plans even for buildings still in development. Projects that qualify for the ITC generate higher lease payments for owners, making now the optimal time to act. To maximize value, developers are structuring portfolio-wide partnerships that span multiple properties and secure current incentives.
State-level solar solicitation programs are also prolonging benefits for CRE owners in a post-ITC market. New Jersey, for example, just expanded their rooftop solar program capacity tenfold, creating one of the most attractive markets in the nation to host solar. Other states, including Illinois, are currently proposing expanded programs and increased pricing of renewable energy credits starting in 2026, helping sustain the elevated lease rates that make solar so compelling for owners. Like New Jersey and Illinois, many states across the country are implementing solar-friendly program guidelines in response to rising electricity prices and growing support from the commercial real estate industry.
Industry advocacy has played a key role in shaping this landscape. Organizations including NAIOP publicly advocated for favorable Treasury guidance on guidelines set out in the One Big Beautiful Bill Act, helping real estate owners and developers take advantage of the shortened window to claim the ITC. For CRE owners, the message is clear: the opportunity to secure the highest possible lease rate is now. Projects must be named and pursued by mid-2026 to preserve ITC eligibility. Delaying beyond this point means lower lease rates and reduced federal incentives, even as rooftop solar development continues. Those who act quickly, partner with experienced developers, and plan strategically across their portfolio will benefit from the highest lease rates, higher portfolio valuations and future-proofed assets.
