Sustainable finance is often framed as a capital allocation challenge, but in reality it is a market design problem. Across climate transition, green infrastructure, and emerging sustainable technologies, the constraint is rarely a lack of capital – it is a lack of bankable opportunities at scale that meet the risk-return expectations of private investors. Sustainability and public goods are not priced into everyday transactions (which only tend to account for private costs/benefits), risks are uncertain and mispriced, policy signals evolve, and many projects end up sitting in early-stage or fragmented markets. The result is a persistent gap between ambition and execution.
This is where financial institutions (FIs) – particularly public and semi-public ones – play a fundamental role.
Not all FIs approach sustainable finance in the same way. Commercial banks and asset managers are primarily focused on integrating ESG into existing risk and return frameworks, reallocating capital within established markets. By contrast, public and semi-public institutions – including state-owned banks, national promotional banks and institutions (NPBIs), and multilateral development banks (MDBs) – operate with a broader mandate. To deliver on policy objectives such as climate transition and economic cohesion, they must often address market failures and mobilise additional private capital. In doing so, they act as catalysts, shaping markets rather than simply participating in them.
With FIs being critical to the transition of our financial sector and economies, the question is how to operationalise this role consistently and at scale. At Trinomics, we believe the next phase of sustainable finance will thus not be defined by new commitments or frameworks, but by the ability to systematically turn intent into investable reality. For public and semi-public FIs, this means embracing their role as market-makers – using their mandates, balance sheets, and expertise to de-risk, structure, and scale opportunities that private markets cannot yet fully support.
The Core Challenge(s)
At the heart of sustainable finance is a set of structural challenges that consistently slow progress, particularly for FIs.
- Turning ambition into pipeline: Policy goals do not automatically translate into investable projects, requiring institutions to bridge the gap between early-stage opportunities and bankable deals.
- Managing and allocating risk: Climate, transition and technology risks are often difficult to quantify, making it critical to determine where and how risk should be absorbed to unlock private investment.
- Mobilising private capital at scale: Public balance sheets alone are insufficient, so interventions must be structured to crowd in, rather than crowd out, private capital.
- Embedding sustainability into decisions: Sustainable finance must move beyond reporting, becoming integrated into core credit, investment, and pricing processes to influence real capital flows.
Alongside these core challenges are a broader set of persistent barriers. For instance, institutions must navigate evolving regulatory and taxonomy frameworks, work with incomplete or inconsistent data, balance impact objectives with financial sustainability, and coordinate across multiple stakeholders and jurisdictions. While each of these challenges is manageable in isolation, their (frequent) combined presence reinforces the execution gap.
Turning Strategy into Execution: Practical Tools for Catalytic Finance
For institutions like the European Investment Bank (EIB), the challenge is therefore not simply to deploy capital, but to do so in a catalytic, additional, and scalable way. This requires moving beyond high-level frameworks toward operational capabilities – translating policy objectives into transaction-level criteria, embedding ESG and climate considerations into risk and pricing models, aligning internal stakeholders, and enabling faster, more consistent decision-making. This is what we have been supporting the EIB (and others) with.
Through various projects (often implemented with partners), our work with the EIB achieves this by embedding catalytic thinking into tools, frameworks and day-to-day operational decisions.
- Under Promoting Circular Economy Funding and Financing in the European Union, we developed a clear circular economy investment roadmap identifying where capital is needed, and why it is not flowing. Crucially, this went beyond analysis to define blended finance approaches, pipeline development strategies, and practical levers to unlock private investment. The result is a transferable framework for turning circular ambition into investable opportunities.
- In Climate Adaptation Investments Planning in Sub-Saharan Africa, the challenge shifts to risk and uncertainty. With key inputs from a range of local stakeholders (predominantly public institutions and agencies), we support the EIB in identifying and shaping financeable adaptation projects through detailed pre-feasibility assessments, helping prioritise opportunities and structure early-stage investments. This enables targeted de-risking, unlocking investments and markets where private capital would not otherwise engage.
- At portfolio level, the Counterparty Transition Plan Quality Analysis demystifies the range of transition plan standards available globally and EU regulatory requirements, enhancing the EIB’s PATH Framework into a more robust and usable assessment framework. By defining clear criteria and scoring approaches, this allows EIB investment teams to consistently evaluate transition plans of counterparties, balancing ambition with practicality and embedding transition risk into financing decisions.
- Through the Advisory Support for Corporate Climate Action and Sustainability programme, we conduct in-depth research and engagement with EIB counterparties (in this case corporates) to provide targeted and effective technical assistance. This enables beneficiaries in various sectors and countries turn commitments into climate or broader sustainability strategies and plans. We also provide actionable recommendations for transparent reporting in line with EIB requirements and EU disclosure regulations, as well as translate the required investments into sustainability-linked financing frameworks aligned with best practice.
Across all of this, the objective is consistent: moving from frameworks to financial practice through targeted recommendations and tool development. By strengthening pipeline, clarifying risk, and embedding sustainability into core decisions, institutions like the EIB can more effectively de-risk markets, mobilise capital at scale, and play their critical role in the transition to sustainable economic and financial systems.
While the examples above focus on a large EU institution and on one of our key clients, we work with many other FIs and clients (large and small, national or international). We are also a flexible team and organisation capable of developing bespoke, effective solutions. Get in touch with any thoughts and if you think we can help you!
