This article was originally posted by the Forbes on Mar. 19, 2026.
By Caissa Martinez.
When most commercial real estate borrowers first encounter commercial property assessed clean energy financing (C-PACE), it is typically framed as a sustainability tool: a way to finance energy upgrades, meet ESG mandates or satisfy green certification requirements. That framing is not wrong, but it is incomplete in ways that matter for how borrowers evaluate their financing options.
Having looked at C-PACE from the equity side, then from inside an origination platform and now as a private credit investor, what struck me most was how far the instrument has evolved beyond that original narrative, as well as how much misinformation still shapes the way borrowers engage with it. The framework I apply is straightforward: Separate the structural mechanics of the instrument from its marketing narrative, and evaluate each on its own terms.
This article is not an argument for C-PACE. Instead, it is an attempt to describe what it actually is, how the market has matured and what questions borrowers should be asking before they dismiss or embrace it.
What The Market Data Actually Shows
C-PACE is no longer an experimental or niche product. Cumulative originations nearly reached $10 billion by the end of 2024, and annual volume reached an estimated record $3.5 billion in 2025 according to industry estimates. Individual transaction sizes have scaled alongside that volume growth. In December 2025, a single C-PACE transaction closed at $465 million, the largest in the industry’s history. The data suggests this is no longer a pilot-stage instrument. Standardized underwriting, legal precedent and institutional participation have developed alongside the volume growth.
Institutional capital has followed that trajectory. Major private credit platforms have deployed dedicated C-PACE programs, rating agencies have developed guidance for the instrument, and according to PACE Equity, more than 400 senior lenders have established consent processes for C-PACE financings. A borrower encountering C-PACE for the first time today is not encountering an emerging niche. They are encountering a market that has been building institutional infrastructure for over a decade.
The perception gap between where the market is and where many borrowers think it is represents a real due diligence blind spot.
What C-PACE Actually Is
C-PACE is long-term, fixed-rate, non-recourse financing secured by a special property tax assessment, with priority similar to property taxes. It is privately funded, not a government subsidy and repaid through the property tax bill over 20 to 30 years. The assessment runs with the land, meaning it is fully assumable upon sale and non-accelerating upon default.
Two structural characteristics are frequently overlooked and worth stating precisely.
First, C-PACE holds a lien position with priority similar to property taxes and senior to mortgages. That priority, however, applies only to delinquent installments, not the entire outstanding balance. This distinction matters because it shapes how senior lenders evaluate the consent decision and how the instrument actually behaves in a distressed scenario.
Second, because the balance is non-accelerating, a C-PACE delinquency does not trigger a call on the full outstanding amount. That is a meaningfully different default profile than conventional debt, and it is part of why institutional lenders have become comfortable participating in stacks that include it.
Where The Structural Benefit Gets Overlooked
In most conversations I have seen about C-PACE, the analysis begins and ends with rate. That starting point is too narrow. Whether C-PACE reduces blended financing cost depends on market conditions and deal structure, and it does not always do so. What it consistently offers is a different recourse and covenant profile. For borrowers, that distinction is worth evaluating on its own terms, independent of where the rate lands.
The more precise question is this: What does the recourse and covenant profile of each tranche in my stack actually look like?
In ground-up construction, it is not uncommon that lenders require partial recourse as a condition of the loan. C-PACE, as a non-recourse instrument that can fund up to 20% to 40% of eligible project costs, introduces a tranche that does not add to the borrower’s recourse obligations. Whether that structural characteristic is worth the consent process and additional complexity is a deal-specific judgment. But it is the right question, and it is rarely the one being asked.
Three Questions Worth Asking
For borrowers evaluating whether C-PACE belongs in a capital stack conversation, the analytical starting point is not rate. It is structure.
1. Does your senior lender have an established C-PACE consent process, and what does that process require? Consent is not automatic, and lenders vary significantly in their familiarity and willingness.
2. What portion of your project costs qualify as eligible under your state’s active program? Eligible uses cover energy, water and resiliency improvements including related soft costs, but program specifics vary by jurisdiction.
3. How does the recourse and covenant profile of this tranche compare to your next best alternative capital source? That comparison, not the rate in isolation, is where the evaluation should begin.
The Broader Point
Capital markets tools are only useful to borrowers who understand them accurately. C-PACE has matured from a policy incentive into a financing instrument with specific structural characteristics that either fit a given deal or don’t. The instrument has matured. The conversation around it has not fully caught up yet.