August 2026, Enduring Earth and a series of contributors have produced a new report examining how Sustainable Finance Mechanisms (SFMs) can strengthen the Project Finance for Permanence (PFP) model, an approach developed to secure long-term financing for large-scale, durable conservation initiatives by combining philanthropic capital, public finance, and sustainable revenue streams.

As the conservation finance landscape evolves, Enduring Earth and partners are increasingly exploring how a broader suite of SFMs can reinforce the long-term durability and scalability of the PFP model.

This summary synthesizes the findings and recommendations from three companion reports, commissioned by Enduring Earth with support from the Global Environment Facility (GEF) project ‘Accelerating Sustainable Finance Solutions to Achieve Durable Conservation’.

• Baseline and Opportunity Analysis of Sustainable Finance Mechanisms for the PFP Model
• Outcome-Based Bond Prototype for the PFP Model
• Blended Finance Prototype for the PFP Model

Together, the reports assess the current use of SFMs across PFP initiatives, analyze emerging opportunities in the broader conservation finance landscape, and propose prototype approaches for evaluating and designing two mechanisms prioritized for deeper exploration in the PFP context: outcome-based bonds and blended finance.

The analysis and recommendations are intended to help Enduring Earth partners and other PFP practitioners diversify financing strategies, attract new forms of capital, and ultimately improve the long-term financial sustainability of conservation outcomes.