Europe’s sustainability financing chain has a structural problem: the continent can fund early-stage invention but repeatedly fails to carry promising companies through growth, deployment and exit. That was the central finding of a recent roundtable co-hosted by London Business School and Reframe Venture, an organisation which helps VC funds and limited partners (LPs) integrate environmental, social and governance (ESG) and responsible investment practices into private markets. Investors, operators and public finance institutions met under the Chatham House Rule to discuss clean energy, resilience and responsible technology.
Where Europe’s sustainability financing chain breaks down
The roundtable’s diagnosis pointed to a sequence of failures rather than a single gap. Europe produces strong research and has active seed investors. But capital availability reduces as companies grow, and the problem is made sharper by the nature of many sustainability businesses: physical assets, long development timelines and heavy capital requirements before revenue begins to flow.
The 2020 to 2022 green energy investment surge illustrated the mismatch. Investors poured money into clean energy companies but applied the same assumptions they use for fast-growing software startups, even though building physical energy projects is far slower and more expensive. Those companies assumed cheap borrowing would persist. When interest rates rose, project economics deteriorated, valuations fell and customer demand for things like electric vehicles and hydrogen grew more slowly than forecast. The result was write-downs, a stigma around parts of the sector and capital locked inside funds.
With fewer exits, LPs received little cash to recycle, colliding with broader European weaknesses: a fragmented market for scaling companies, shallow exit markets and less institutional venture capital. European funds frequently compete not only with established US managers but also with private credit, public equities and the return narratives around AI and defence.
Valuation mismatches compound the problem as companies mature. A hardware business can raise early-stage capital at a high valuation to prove its technology, then discover that the infrastructure investor needed for deployment values it at half the previous round. Policy has done little to close this gap. The Financial Conduct Authority‘s Sustainability Disclosure Requirements impose naming, marketing and disclosure rules on asset managers, while the European Commission‘s Sustainable Finance Disclosure Regulation requires financial market participants and advisers to disclose sustainability information at entity and product level. Both regimes brought sustainability onto institutional agendas, but the roundtable’s view was that too much energy went into labels and templates.
The industrial stakes of getting this wrong
The consequences of a broken financing chain are not merely financial. Founders follow visible customers, credible funding rounds and plausible exits. One early-stage investor at the roundtable estimated, on an admittedly anecdotal basis, that climate-related pitches in its pipeline had fallen significantly, and the direction of that observation resonated across the room. If founders move away from sustainability, the capabilities they take with them are hard to rebuild. Technical and industrial competence takes years to assemble and cannot be recreated on demand once teams have dispersed into other sectors.
Demand for sustainability solutions, though, is not going away. Heatwaves, wildfire losses and repeated energy-price shocks are already moving physical risk into operating budgets. Hospitals need cooling, supermarkets need reliable cold chains and utilities need better wildfire management. Without European businesses positioned to serve those customers, more of those systems will be imported. Europe does not need to manufacture every solar cell or battery component domestically, but strategic dependence carries a price, particularly in automotive supply chains, energy systems and connected infrastructure.
What a functioning system would look like
The roundtable pointed to a practical starting point: commercially ready technologies belong in private portfolios, while first-of-a-kind plants and capital-intensive hardware may require non-dilutive grants and patient public capital to lower the cost of capital before private investors can enter. A capital stack, however, will fail if demand remains uncertain.
The defence sector was held up as a model. Long-term spending commitments, grants for early development, procurement contracts and a public buyer of first resort have mobilised private capital in defence in a way that sustainability policy, with its emphasis on targets and reporting, has not yet replicated. Investors underwrite customers and cash flows; a credible government commitment to buy can unlock capital more effectively than another disclosure requirement.
Secondary markets also featured as an under-used lever. Stronger secondaries could return cash to LPs before an IPO or trade sale, even at honest discounts, and better liquidity would make it easier to mobilise Europe’s long-term asset owners. Even a small allocation from pension funds would be meaningful at venture scale, but that requires consultants and trustees who understand the asset class and dedicated European venture allocations, so that local funds are not perpetually benchmarked against a more mature US ecosystem.
The roundtable’s conclusion was clear-eyed: the first phase of Europe’s sustainability agenda created direction and accountability. The next phase must connect research to capital, capital to customers and early investors to exits, or Europe risks achieving parts of its transition on technologies and strategic terms set elsewhere.
