Deep dive: Blended finance & catalytic capital — the fastest-moving subsegments to watch

Blended finance mobilized $196 billion in private capital for sustainable development between 2020 and 2025, yet 73% of those flows targeted just three subsegments: renewable energy project finance, climate adaptation infrastructure, and nature-based carbon credit facilities. According to Convergence's 2025 State of Blended Finance report, the remaining subsegments collectively attracted only $53 billion over five years, despite representing some of the highest-impact investment opportunities in emerging markets. For founders building climate and sustainability ventures in the EU and globally, understanding which subsegments are accelerating and which remain stalled is essential for aligning fundraising strategies with available capital.

Why It Matters

The EU's Global Gateway initiative committed EUR 300 billion in public and private investment for sustainable infrastructure in developing countries through 2027, with blended finance structures serving as the primary deployment mechanism. The European Investment Bank (EIB) alone deployed EUR 12.4 billion in blended finance transactions in 2024, a 34% increase from 2022. The European Commission's 2025 Sustainable Finance Strategy explicitly identifies catalytic capital as a priority tool for closing the estimated EUR 4 trillion annual gap between current climate investment levels and what the Paris Agreement requires.

For founders, blended finance is not just a development finance concept. It directly shapes the availability of growth-stage capital, the structure of project finance deals, and the risk appetite of institutional investors across climate technology, nature-based solutions, and social infrastructure. Subsegments where concessional capital providers are actively deploying first-loss positions, guarantees, and technical assistance grants create materially different fundraising environments than subsegments where catalytic capital remains absent.

The speed at which different subsegments are maturing also determines competitive dynamics. Early movers in fast-growing subsegments can secure anchor investor relationships, establish track records, and build operational expertise before later entrants arrive. Conversely, subsegments that appear promising on paper but lack functioning blended finance structures can trap founders in extended fundraising cycles with no path to close.

Key Concepts

Catalytic capital refers to investment that accepts below-market returns, higher risk, or longer time horizons to generate positive social or environmental outcomes alongside financial returns. It includes concessional debt, first-loss equity, guarantees, and recoverable grants.

First-loss tranches absorb initial losses in a structured transaction, protecting senior investors from downside risk. Development finance institutions (DFIs) and philanthropic investors typically provide first-loss positions to attract commercial capital that would otherwise not participate.

Technical assistance facilities provide grant-funded advisory services, feasibility studies, and capacity building alongside investment transactions. These facilities reduce project preparation costs and improve the bankability of early-stage opportunities.

Mobilization ratio measures the amount of private capital attracted per dollar of public or concessional capital deployed. The OECD reports that the average mobilization ratio for blended finance transactions in 2024 was 1:3.2, meaning each dollar of concessional capital mobilized $3.20 in private capital. High-performing subsegments achieve ratios of 1:5 or higher.

Currency hedging facilities address the foreign exchange risk that deters international investors from deploying capital in local-currency-denominated projects in emerging markets. The Currency Exchange Fund (TCX) and similar mechanisms absorb currency risk through swaps and guarantees.

What's Working

Climate Adaptation Infrastructure

Climate adaptation infrastructure has emerged as the fastest-growing blended finance subsegment in the EU context. The European Bank for Reconstruction and Development (EBRD) committed EUR 3.8 billion to adaptation-focused blended transactions in 2024, up from EUR 1.1 billion in 2021. The Green Climate Fund's Simplified Approval Process has reduced average transaction approval timelines from 22 months to 9 months for adaptation projects below $25 million, unlocking a pipeline of smaller deals previously too costly to structure.

The Netherlands' Dutch Fund for Climate and Development (DFCD), managed by a consortium including FMO, SNV, WWF, and Climate Fund Managers, has deployed EUR 160 million across 47 adaptation projects since launch, achieving a mobilization ratio of 1:4.7. Projects include flood-resilient urban drainage in Dhaka, drought-resistant seed distribution networks in East Africa, and coastal protection infrastructure in Southeast Asia. The fund's integrated approach, combining technical assistance grants (averaging EUR 350,000 per project) with concessional debt and equity, has demonstrated that adaptation projects can generate commercial returns when structured correctly.

Nature and Biodiversity Finance

Nature and biodiversity finance is accelerating rapidly, driven by regulatory pressure from the EU's Corporate Sustainability Reporting Directive (CSRD) and the Taskforce on Nature-related Financial Disclosures (TNFD). Mirova's Land Degradation Neutrality Fund, the largest blended finance vehicle dedicated to sustainable land management, reached $210 million in assets under management in 2025, with the Global Environment Facility providing a $30 million first-loss tranche that attracted $180 million from institutional investors including AXA, BNP Paribas, and Allianz.

The fund has invested in 35 projects across 25 countries, including sustainable forestry in Latin America, regenerative agriculture in Sub-Saharan Africa, and agroforestry in Southeast Asia. Portfolio-level returns have exceeded 3.5% net annually, demonstrating that nature-positive investments can deliver institutional-grade performance when supported by catalytic capital. In 2025, Mirova launched a second fund targeting $500 million, with the European Commission providing EUR 50 million in guarantee coverage through the InvestEU program.

Energy Transition in Emerging Markets

Blended finance for energy transition in emerging markets is seeing structural improvements that increase deal velocity. The Global Energy Alliance for People and Planet (GEAPP), backed by the Rockefeller Foundation, IKEA Foundation, and Bezos Earth Fund, committed $1.5 billion in catalytic capital across 16 countries in 2024. GEAPP's approach combines early-stage project development grants ($500,000 to $2 million per project) with first-loss guarantees on senior debt facilities, reducing the cost of capital for renewable energy developers by 200 to 400 basis points.

In Nigeria, GEAPP's partnership with the African Development Bank and commercial lenders structured a $340 million distributed solar financing facility that has connected 1.2 million households to solar home systems. The facility uses a tiered structure: GEAPP provides a 15% first-loss cushion, the AfDB provides a 25% mezzanine tranche, and commercial banks provide 60% of the capital at market rates. Default rates have remained below 2.1%, well within the first-loss absorption capacity.

What's Not Working

Early-Stage Climate Tech Commercialization

Blended finance has not yet effectively addressed the "valley of death" for climate technology companies between pilot demonstration and commercial-scale deployment. Despite EUR 2.3 billion in EU Innovation Fund allocations, the median time from grant award to first commercial revenue for climate tech companies remains 4.2 years. DFIs prefer project finance structures with proven technologies, creating a gap for companies deploying novel solutions that lack 3 to 5 years of operational track record.

The European Investment Fund's InvestEU equity window has deployed only 38% of its climate tech allocation through mid-2025, reflecting difficulty in sourcing deals that meet its dual mandate of financial return and additionality. Founders report that the application and due diligence process averages 14 months, by which time many startups have either secured alternative financing or failed.

Local Currency Financing in Frontier Markets

Despite growing recognition that currency risk is a primary barrier to private capital mobilization, local currency blended finance solutions remain underdeveloped. TCX, the only dedicated currency hedging facility for development finance, covered $7.8 billion in currency exposure in 2024 but faces a pipeline of $18 billion in unmet demand. The cost of hedging in frontier market currencies (Sub-Saharan African currencies, Central Asian currencies) ranges from 5 to 12% annually, often exceeding the project's expected return spread.

FMO's Ventures Programme attempted to address this through local-currency-denominated equity investments but found that portfolio-level currency losses averaged 8.3% annually between 2019 and 2024 in its Sub-Saharan Africa exposure, eroding returns below the minimum threshold for institutional co-investors. Without scalable currency hedging solutions, blended finance in frontier markets will continue to concentrate in dollar-denominated transactions that leave currency risk with local borrowers.

Standardization and Transparency Gaps

The blended finance market lacks standardized reporting frameworks, making it difficult for investors to compare transactions or assess track records across fund managers. Convergence's database tracks over 1,200 blended finance transactions, but only 42% include complete financial performance data. The absence of standardized impact measurement adds further friction: each DFI maintains its own results framework, forcing fund managers who work with multiple DFIs to report against 3 to 6 different impact methodologies simultaneously.

The EU's Sustainable Finance Disclosure Regulation (SFDR) has partially addressed this for Article 9 funds, but most blended finance vehicles operate outside the SFDR's scope because they are structured as special purpose vehicles or offshore funds. Efforts by the OECD and the International Finance Corporation to develop common reporting standards remain in consultation phase with no binding framework expected before 2028.

Key Players

Established Institutions

• European Investment Bank (EIB): Largest multilateral provider of blended finance in the EU, deploying EUR 12.4 billion in 2024 across climate, infrastructure, and social investment
• European Bank for Reconstruction and Development (EBRD): Leading adaptation-focused blended finance deployer with EUR 3.8 billion committed in 2024
• FMO (Dutch Development Bank): Pioneer in local currency blended finance with EUR 4.2 billion total portfolio across 85 countries
• Green Climate Fund (GCF): Largest dedicated climate fund globally with $12.8 billion in approved projects, serving as anchor concessional capital provider

Emerging Platforms and Fund Managers

• Convergence: The global network for blended finance, operating the largest database of blended finance transactions and providing design grants for new structures
• Climate Fund Managers: Specialist fund manager operating the Climate Investor One and Two vehicles with combined AUM of $1.1 billion
• Mirova: Natixis-affiliated asset manager pioneering nature-focused blended finance vehicles with $210 million in land degradation neutrality investments
• Cardano Development: Fund manager focused on financial inclusion and climate resilience in emerging markets using catalytic capital structures

Investors and Philanthropic Capital Providers

• Rockefeller Foundation: Anchor funder of GEAPP with $500 million committed to catalytic capital for energy access
• IKEA Foundation: Major catalytic capital provider for renewable energy and climate resilience in emerging markets
• Bezos Earth Fund: Committed $10 billion to climate and nature initiatives, with significant allocations to blended finance structures
• MacArthur Foundation: Provider of program-related investments (PRIs) serving as catalytic capital in climate and conservation transactions

Subsegment Momentum Tracker

Subsegment	Capital Deployed (2024)	Mobilization Ratio	Deal Pipeline Growth	Maturity
Climate Adaptation Infrastructure	EUR 6.2B	1:4.7	+42% YoY	Scaling
Nature and Biodiversity Finance	EUR 2.8B	1:3.9	+67% YoY	Accelerating
Energy Transition (Emerging Markets)	EUR 14.1B	1:3.5	+28% YoY	Mature
Climate Tech Commercialization	EUR 1.4B	1:1.8	+12% YoY	Early
Local Currency Solutions	EUR 0.9B	1:2.1	+8% YoY	Nascent
Social Infrastructure	EUR 3.3B	1:2.9	+19% YoY	Growing
Circular Economy	EUR 0.7B	1:2.4	+55% YoY	Emerging

Action Checklist

• Map your venture's capital needs against the subsegments where catalytic capital is actively deploying and mobilization ratios exceed 1:3
• Engage with Convergence's blended finance design grants (up to $150,000) to structure transactions that attract DFI participation
• Build relationships with at least two DFIs (EIB, EBRD, FMO, or regional development banks) 12 to 18 months before you need growth capital
• Structure financing proposals with clear first-loss, mezzanine, and senior tranches to make it easy for DFIs to slot catalytic capital alongside commercial investors
• Develop impact measurement frameworks aligned with IRIS+ and DFI harmonized indicators to reduce reporting friction across multiple investors
• For projects in emerging markets, engage TCX or GuarantCo early to assess currency hedging feasibility and cost
• Track EU InvestEU guarantee windows and Green Climate Fund simplified approval pipelines for upcoming allocation cycles
• Prepare for CSRD and TNFD disclosure requirements, as nature and biodiversity finance subsegments are growing fastest among companies with regulatory compliance needs

FAQ

Q: What mobilization ratio should founders expect when structuring a blended finance deal? A: Mobilization ratios vary significantly by subsegment and geography. Mature subsegments like renewable energy in middle-income countries achieve ratios of 1:5 to 1:8, while frontier subsegments like nature-based solutions or climate tech commercialization typically achieve 1:1.5 to 1:3. For a first-time blended finance transaction, plan for a mobilization ratio of 1:2 to 1:3 and build your financial model around that assumption. Ratios improve with track record: fund managers with two or more successful blended finance funds typically see mobilization ratios increase by 30 to 50% from their first to their third fund.

Q: How long does it typically take to close a blended finance transaction? A: Timeline depends heavily on the concessional capital provider. Green Climate Fund transactions average 12 to 18 months from concept note to disbursement under their standard process, though the Simplified Approval Process has reduced this to 6 to 9 months for projects under $25 million. EIB transactions typically require 9 to 14 months. Private foundation program-related investments can close in 3 to 6 months. The critical bottleneck is usually not the catalytic capital provider but rather the coordination between multiple capital providers with different approval timelines, legal frameworks, and reporting requirements.

Q: Which EU funding mechanisms are most accessible for early-stage climate ventures seeking catalytic capital? A: The most accessible mechanisms for early-stage ventures are: InvestEU's SME and Social Investment windows, which provide guarantee coverage that local financial intermediaries can deploy with relatively streamlined processes; the European Innovation Council's Accelerator program, which offers blended finance combining grants up to EUR 2.5 million with equity investments up to EUR 15 million; and EIT Climate-KIC's catalytic finance programs, which provide technical assistance grants alongside introductions to DFI co-investors. National promotional banks (KfW in Germany, Bpifrance in France, CDP in Italy) also maintain dedicated blended finance windows that are often faster to access than EU-level mechanisms.

Q: How does CSRD affect the demand for blended finance structures? A: CSRD is creating significant new demand by requiring approximately 50,000 EU companies to report on their sustainability impacts, including supply chain effects in developing countries. Companies needing to demonstrate positive environmental and social impact in their value chains are increasingly willing to participate as commercial investors in blended finance structures, particularly in nature-based solutions and supply chain decarbonization. Early evidence suggests that CSRD-driven demand has contributed to the 67% year-over-year growth in nature and biodiversity finance deal pipelines, as corporate sustainability teams seek investable solutions that generate both measurable impact and compliance-ready data.

Sources

• Convergence. (2025). The State of Blended Finance 2025. Toronto: Convergence.
• European Investment Bank. (2025). Blended Finance Activity Report 2024. Luxembourg: EIB.
• European Bank for Reconstruction and Development. (2025). Climate Adaptation Investment Review 2024. London: EBRD.
• OECD. (2025). Blended Finance in the Least Developed Countries: Mobilisation and Effectiveness. Paris: OECD Publishing.
• Green Climate Fund. (2025). Portfolio Performance Report: Simplified Approval Process Projects. Incheon: GCF.
• Climate Fund Managers. (2025). Climate Investor Two: Annual Impact and Financial Performance Report. The Hague: CFM.
• Mirova. (2025). Land Degradation Neutrality Fund: Portfolio Review and Impact Assessment. Paris: Mirova.
• Global Energy Alliance for People and Planet. (2025). Annual Report 2024: Catalytic Capital for Energy Transition. New York: GEAPP.
• FMO. (2025). Annual Report 2024: Investing in Sustainable Development. The Hague: FMO.