Risk capital and European green bonds: structural limits in the venture-to-bond financing pipeline under EU sustainable finance law

Nº 2 / 2026 - abril - junio

Risk capital and European green bonds: structural limits in the venture-to-bond financing pipeline under EU sustainable finance law

Andrew John O’Flynn Bright
Universidad de Valencia

Abstract:

The European Green Bond Regulation (Regulation (EU) 2023/2631) establishes a voluntary framework intended to enhance the credibility of environmentally sustainable debt financing through taxonomy alignment, disclosure obligations and external review mechanisms.

Although the Regulation is frequently presented as a means of facilitating capital flows towards environmentally sustainable activities, its legal architecture is fundamentally oriented towards the identification, allocation and verification of specific expenditures capable of generating measurable environmental outcomes.

This article examines the implications of that structure for firms financed through venture capital and other forms of risk capital. It argues that the limited role of venture-backed firms within the European Green Bond framework may not indicate a regulatory deficiency. Rather, it may reflect an inherent consequence of a regime designed to prioritise traceability, comparability and investor confidence.

The article further suggests that European Green Bonds are more naturally suited to financing the deployment and scaling of established green technologies than the uncertain innovation phase typically financed through venture capital.

In doing so, it identifies a structural boundary within the EU sustainable finance framework and explores the implications of that boundary for the relationship between
risk capital and sustainable finance.

Keywords: The European Green Bond Regulation, Venture Capital, Sustainable Finance