Publications

Publication:Policy Brief
 
The data and charts in this brief update those presented in our January 2026 paper: Europe's Selective Blindness on Gas: US LNG and the Limits of Supply Diversification. This brief draws on the most recent (2 July 2026) version of Bruegel’s European natural gas imports dataset, covering the first half of 2026.

Europe's Diversification Paradox

Growing US and Russian gas import shares in 2026

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Publication:Report
 
Geopolitical tensions, volatile energy markets and the focus on strategic autonomy have pushed industrial competitiveness to the top of the political agenda. European climate policy therefore requires close coordination between emissions reduction, investment security and competitiveness. In a background paper, Ariadne researchers summarise how governance, financing, industrial transformation, the EU Emissions Trading Scheme and energy infrastructure need to simultaneously ensure decarbonisation, economic resilience and public support.

Advancing EU Competitiveness Through a More Effective Climate Transition

Ariadne-Background

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Publication:Report
 
This paper argues that there is no plausible basis for the introduction of a “grace period” in respect of infringements of Article 27 of the EU Methane Emissions Regulation (EUMR), as proposed in a recently leaked draft European Commission Recommendation.

EU Methane Regulation Article 27: the Case Against a Grace Period

Why the ordinary enforcement regime does not endanger EU energy security

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Publication:Document
 
This paper reviews a secretive Joint Statement (JS) on Gas Supply Security to Central and Eastern Europe that was signed in Washington, D.C., on 24 February 2026 on the sidelines of meetings organised by the White House, its ‘National Energy Dominance Council’, and the ‘Donald J. Trump Institute of Peace’. Signatories comprise the US, eight EU Member States and four candidate countries.

European Energy Security or Acquiescence?

A critical review of the 24 February 2026 United States-Central and Eastern Europe Joint Statement

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Publication:Policy Brief
 
Double chat showing the EU LNG imports from non-EEA countries from 2019 to 2025, in bcm and as share
Based on a novel analysis covering the entire European Economic Area (EEA, notably including Norway), this policy brief shows that US gas imports into the EEA sharply surged in 2025. They now account for almost 40% of total EEA gas imports and nearly 60% of LNG imports. This trend exposes Europe to heightened geopolitical pressure, price volatility and the risk of stranded assets.

Europe's Selective Blindness on Gas: US LNG and the Limits of Supply Diversification

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Publication:Report
 
This report contributes to a better understanding of the economic implications of climate change adaptation across the European Union. Its central objective is to analyse three key dimensions: the costs of adapting to climate change, the costs of inaction, and current levels of adaptation funding. The analysis focuses on three climate-sensitive sectors of strategic importance for the EU economy and society: transport, energy, and agriculture.

Knowledge Development and Application Concerning Costs of Adaptation Compard to Costs of Inaction

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Publication:Case Study
 
This paper examines the penalty provisions in the draft Czech implementing law submitted on 11 November 2025 by the Minister for the Environment to the Prime Minister. It briefly considers the draft's legislative status in light of the political situation following the 3–4 October general election, assesses its compliance with the EU-MER, and compares it with good practice in Denmark and with Italy's draft law.

Czechia's Draft Penalty Rules for Violations of the EU Methane Regulation

Assessment of the draft law of 11 November

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Publication:Case Study
 
This paper examines the penalty provisions in the draft Romanian implementing law proposed by the Romanian government on 22 July 2025. It briefly considers the draft's legislative status, assesses its compliance with EU-MER, and compares it with good practice in Denmark and with Italy's draft law.

Romania's Draft Penalty Rules for Violations of the EU Methane Regulation

Assessment of the draft law of 22 July 2025

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Publication:Report
 
The triple planetary crisis is a systemic challenge, not three separate issues: climate change, biodiversity loss, and pollution reinforce one another through shared drivers and feedback, threatening planetary and human well-being. It is driven by fossil fuel dependence, unsustainable production and consumption, overexploitation of land and resources, and structural inequalities. The analysis concludes that the triple crisis can only be effectively addressed through systemic, cross-sectoral, and justice-oriented approaches. By linking resource governance, NbS, and transformative change, this report highlights how today’s triple crisis can be turned into an opportunity to regenerate ecosystems, reduce inequalities, and build resilient societies within planetary boundaries.

Moving from Interconnected Crises to Systemic Solutions

Resource efficiency, nature-based solutions, and systemic transformation as responses to the complexity of the triple planetary crisis

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Publication:Fact Sheet
 
This fact sheet summarizes the information contained in the publication Burgos Cuevas et al. (2025): Moving from interconnected crises to systemic solutions. Resource efficiency, nature-based solutions, and systemic transformation as responses to the complexity of the triple planetary crisis. Interim report, Climate Change 83/2025. German Environment Agency: Dessau-Roßlau. https://doi.org/10.60810/openumwelt-8108.

Moving from Interconnected Crises to Systemic Solutions

Resource efficiency, nature-based solutions, and systemic transformation as responses to the complexity of the triple planetary crisis

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Publication:Policy Brief
 
The EU must rethink its energy security in light of increasingly renewable, decentralized, and electrified energy systems. Energy security already benefiting from the early start of the energy transition. In the transition phase now beginning, a forward-looking and adaptable approach is needed to maximize synergies and manage potential conflicts between decarbonization and energy security.

Europe's Energy Security on the Path to Climate Neutrality

Devising a resilience strategy for the mid-transition

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Publication:Report
 
How can the EU stay on track to climate neutrality – despite tightening budgets and rising geopolitical pressure? A new Ariadne background paper reviews the Fit for 55 package, discusses open questions for the post-2030 period, and outlines options for a more coherent EU policy architecture.

Staying the Course in Turbulent Times

Insights on the current state and ways forward for the EU's climate, energy and finance policy architecture

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Publication:Report
 
Cover page of the report “International Oil Extraction Levy – Design recommendations and impact analysis,” published by Ecologic Institute and the Federal University of Rio de Janeiro (UFRJ). Authors: Prof. Dr. Luan Santos, Dr. Michael Jakob, Jonathan Gardiner, Flora Dicke, and Benjamin Görlach. Publication date: 27 June 2025.
This report explores the design and implications of an international oil extraction levy as a mechanism to mobilize new sources of climate finance. The assessed levy places a price on the embedded CO₂ in extracted crude oil, increasing production costs and likely raising oil prices for final consumers. By internalising part of the climate costs of fossil fuels, the mechanism aligns with the polluter pays principle.

International Oil Extraction Levy

Design recommendations and impact analysis

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Publication:Article
 
Under the EU’s Governance Regulation, Member States are legally required to hold multilevel climate and energy dialogues (MLCEDs), structured spaces for deliberation between governments, civil society, and other stakeholders. In the Review of European, Comparative & International Environmental Law (RECIEL), Ricarda Faber (Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH), Deyana Kocher, and Matthias Duwe (Ecologic Institute) offer an assessment of how Member States are implementing these dialogues under Article 11.

Meaningful Participatory Climate Governance

Lessons from EU multilevel climate and energy dialogues

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Publication:Book
 
Cover of the report titled 'Sustainable development in the European Union: Monitoring report on progress towards the SDGs in an EU context, 2025 edition' by Eurostat. The design features shades of blue with a colorful tree graphic in the lower half.
Eurostat's "Sustainable Development in the European Union: Monitoring Report on Progress towards the SDGs in an EU Context" (2025 edition) offers the ninth comprehensive assessment of the EU's journey toward the 17 Sustainable Development Goals. Researchers from Ecologic Institute authored the chapters on Zero Hunger (SDG 2), Clean Water and Sanitation (SDG 6), Affordable and Clean Energy (SDG 7), Climate Action (SDG 13), Life Below Water (SDG 14), Life on Land (SDG 15) and Partnerships for the Goals (SDG 17), providing rigorous, policy-relevant evidence.

Sustainable Development in the European Union – 2025

Monitoring Report on Progress Towards the SDGs in an EU Context

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