EU Taxonomy and project finance: what European DFIs expect

Introduction

Regulation (EU) 2020/852, known as the Taxonomy Regulation, adopted on 18 June 2020, establishes a framework for determining whether an economic activity is environmentally sustainable. The initial objective was threefold: to direct capital flows towards genuinely sustainable activities, to combat greenwashing, and to offer investors and consumers a common language to compare financial products.

The instrument came into force progressively. The first technical delegated acts were published in 2021 (climate) and 2023 (four other environmental objectives). Reporting obligations for large companies and financial actors were rolled out from 2022 to 2025. European Development Finance Institutions (AFD, Proparco, BII, KfW, FMO, CDC, EBRD) now use it as a reference framework for assessing the environmental sustainability of the projects they finance, even outside the European Union.

For an infrastructure project sponsor, the question is no longer whether the Taxonomy will count in negotiations with a European lender, but how to position the project within the architecture it proposes.

This article presents the six environmental objectives, the logic of the "Do No Significant Harm" (DNSH) principle, the technical screening criteria, the practical implications for infrastructure projects, and the typical pitfalls in initial assessments.

The six environmental objectives

The Taxonomy structures the assessment around six environmental objectives.

Climate change mitigation: the reduction or avoidance of greenhouse gas emissions.

Climate change adaptation: the reduction or prevention of the adverse impacts of present and future climate change.

Sustainable use and protection of water and marine resources.

Transition to a circular economy.

Pollution prevention and control.

Protection and restoration of biodiversity and ecosystems.

To be considered sustainable, an activity must contribute substantially to at least one of these six objectives, without significantly harming the other five. This dual condition (positive contribution plus absence of harm) is the methodological core of the instrument.

The four cumulative conditions

An activity is Taxonomy-sustainable if it simultaneously meets four conditions.

First, contribute substantially to at least one of the six environmental objectives, according to technical criteria defined for each sector and each type of activity.

Second, do not cause significant harm (Do No Significant Harm, DNSH) to any of the other five objectives. This assessment mobilises a grid of criteria per objective.

Third, respect minimum social safeguards, defined by reference to the United Nations Guiding Principles on Business and Human Rights, the OECD Guidelines for Multinational Enterprises, the Fundamental Conventions of the International Labour Organisation, and the International Bill of Human Rights.

Fourth, comply with the technical screening criteria published by delegated act for the sector concerned. These criteria, very detailed, specify the thresholds and conditions that the activity must meet to be considered contributory.

The four conditions are cumulative. The absence of a single one is sufficient to disqualify the activity under the Taxonomy.

Technical criteria for infrastructure

The climate delegated acts (2021) and other delegated acts (2023) publish technical criteria by activity category. For infrastructure, several dominant categories emerge.

Passenger and freight rail transport. The activity is considered to contribute to climate mitigation if rolling stock has zero direct emissions or if operations meet defined carbon intensity thresholds. DNSH criteria cover noise, vibrations, biodiversity in the construction phase, and waste.

Road transport (infrastructure and vehicles). Contribution criteria are more restrictive: roads intended primarily for zero-emissions vehicles, vehicles themselves without direct CO2 emissions. A conventional motorway does not fall under positive contribution to mitigation.

Electricity generation. Specific criteria exist for each technology: solar, wind, hydro, nuclear, biomass. Carbon intensity thresholds, environmental impact criteria, and social acceptability conditions are detailed by technology.

Buildings. New construction, renovation, acquisition. Criteria are anchored to recognised certifications (BREEAM, LEED, national equivalent) and energy performance thresholds.

Water management and sanitation. Collection, treatment, distribution. Criteria concern energy efficiency, quality of service delivered, and impacts on aquatic biodiversity.

For a specific infrastructure project, the Taxonomy assessment exercise consists of identifying the applicable category, comparing the project against the substantial contribution criteria, then verifying the absence of DNSH across the other five objectives.

The DNSH principle, workhorse of rigour

The DNSH (Do No Significant Harm) principle is the element that distinguishes the EU Taxonomy from other more permissive frameworks. An activity can be highly contributory to the climate transition whilst producing major impacts on biodiversity or water; the Taxonomy excludes this type of activity, even if its climate contribution is spectacular.

DNSH assessment is conducted objective by objective, with specific criteria for each.

For mitigation: the activity does not significantly increase direct and indirect GHG emissions.

For adaptation: the activity does not degrade the climate resilience of affected systems.

For water: the activity preserves the status of water bodies, avoids quality degradation, and respects sustainable extraction.

For circular economy: the activity minimises waste, favours recycled or recyclable materials, and plans for end-of-life.

For pollution: the activity complies with best available techniques to limit atmospheric emissions, aqueous discharges, and soil contamination.

For biodiversity: the activity avoids protected areas and sensitive habitats, applies the mitigation hierarchy, and does not contribute to conversions of natural habitats.

The DNSH grid is particularly demanding on water and biodiversity for infrastructure projects, and on pollution for industrial projects.

Implications for projects financed by European DFIs

European DFIs (AFD, Proparco, BII, KfW, FMO, CDC Group, EBRD) are progressively integrating the Taxonomy into their appraisal processes, even for projects located outside the European Union.

Three mechanisms operate in practice.

First, direct use as an eligibility framework. For certain financing windows (particularly instruments dedicated to climate or transition), Taxonomy alignment has become an access criterion.

Second, integration into project documentation. Financing dossiers increasingly include a Taxonomy alignment analysis, either at the appraisal stage or as an annex to monitoring reports.

Third, use for portfolio reporting. European DFIs, which must report on the green share of their activities, have an interest in financing projects they can classify as Taxonomy-aligned. A project that naturally presents this alignment is more attractive to these lenders.

For a project sponsor, the practical implication is twofold. Conduct a Taxonomy assessment from the studies phase, to identify adjustments that render the project alignable. Prepare corresponding documentation in line with the technical criteria, to facilitate the lender's decision.

Pitfalls in initial Taxonomy assessments

Five pitfalls recur in project sponsors' initial Taxonomy assessments.

Treating the Taxonomy as a simple label. The Taxonomy is not a single certification but a complex assessment grid, which requires precise knowledge of the applicable delegated acts.

Neglecting DNSH. Sponsors focus on substantial contribution and minimise the DNSH assessment, which is nevertheless blocking if a single objective is impacted.

Confusing scope. Taxonomy alignment is assessed at the level of the economic activity, not of the entire company. An individual project can be aligned even if the sponsoring company has a diversified portfolio part of which is not.

Misidentifying technical criteria. Delegated acts are very detailed and their correct application requires precisely locating the applicable category. A mismatched activity is assessed according to inappropriate criteria.

Forgetting minimum social safeguards. Several assessments focus solely on environmental criteria and forget the social safeguards, which are nevertheless one of the four cumulative conditions.

What European DFIs verify.

• Precise identification of the activity category according to applicable delegated acts.
• Assessment of substantial contribution on the relevant objective or objectives, documented.
• DNSH assessment on the other five objectives, with evidence of compliance with criteria.
• Minimum social safeguards (UNGP, OECD, ILO, human rights), documented.
• Consistency between the Taxonomy assessment and other project deliverables (ESIA, ESMP, climate analysis).

Conclusion

The EU Taxonomy marks a structural shift in the infrastructure financing landscape, whose effects are settling in progressively. For a sponsor mobilising European financing, it has become an element of commercial negotiation as much as a regulatory issue.

Operational mastery of the instrument is not trivial, but it produces tangible returns: facilitated access to certain financing windows, project valorisation in lenders' portfolios, strengthened credibility with private investor partners. The methodological investment generally pays off from the first project.

More broadly, the EU Taxonomy inspires similar initiatives in other geographies: ASEAN, South Africa, Colombia, post-Brexit United Kingdom. The expertise developed on the European version is directly transferable to these forthcoming geographic extensions.