Our News
Scenarios
De-risking renewable energy investments yields high economic value
Renewable energy projects require high upfront investments. To reduce exposure to fluctuations in electricity prices, governments frequently launch support schemes in the form of long-term public contracts, such as Contracts for Difference (CfDs). Beyond providing financial support, these contracts …
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Last edition of Ariadne@Brussels: “Shaping flexibility, managing uncertainty”
The annual Ariadne conference on climate and energy policy will return once more to Brussels to continue the insightful discussions from previous iterations. The event marks the end of the discussion series under the Ariadne project – but represents …
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“New pathways explored”: Closing event for the Ariadne energy transition project
The Ariadne research project has provided important guidance for the energy transition in Germany since its inceptions in mid-2019, and will leave well-founded recommendations for its further orientation when it closes at the end of 2026. This is the …
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Europe & Green Deal
EU climate policy caught between emissions reduction, competitiveness and investment security
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.
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Ariadne@Brussels 2025: Insights into the conference ‘EU climate and energy policy in a polarising world’
This years iteration of the Ariadne@Brussels workshop series took place in Brussels EU Quarter from 8 to 10 December 2025. Researchers from the Ariadne project presented their latest findings on EU climate and energy policy and discussed them in …
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Paths to climate neutrality
Gabriele Tirelli / Unsplash Transport transition
Heliberto Arias / Unsplash Electricity transition
Federico-Beccari / Unsplash Heating transition
Julian Hochgesang on Unsplash Industrial transition
Maxim Tolchinskiy on Unsplash Hydrogen
Peter Schreiber / Shutterstock Tax reform
StellrWeb on Unsplash Governance
Moritz Lüdtke / Unsplash Europa & Green Deal
Christian Lue / Unsplash 
Publications
Analysis: De-risking renewable energy investments. An analysis of contract design and project finance using operational wind park data
Wind and solar generation requires large upfront investment but has very low running costs. As a result, the cost of clean electricity depends heavily on financing conditions, since lower borrowing costs translate directly into lower power costs. Low borrowing …
Dossier: Challenges and priorities for Germany’s climate diplomacy
Efforts by Germany and the European Union to advance climate mitigation internationally are under pressure. Domestic political priorities have shifted, international tensions and conflicts have increased, conventional approaches to international climate cooperation have reached a roadblock. At the same …
Background: Advancing EU competitiveness through a more effective climate transition
As the European Union designs its post-2030 architecture, it needs a governance framework that preserves the credibility of the climate-neutrality pathway while supporting competitiveness, simplification, and investor certainty. The 2040 target provides an important anchor for this framework, but …
Dossier: A Safety Valve for the EU ETS Endgame – Containing Prices through Carbon Dioxide Removal
A major question for the upcoming review of the EU Emission Trading System (ETS) is how to contain costs while ensuring that green investments, specifically in energy-intensive industries, are not choked off. A key concern for both is the …
Analysis: Lead markets for the industrial transformation – Implementation proposals for instruments to increase demand for climate-friendly basic materials (Summary)
Lead markets, in which climate-friendly basic materials are purchased despite higher costs due to their product property, can complement the existing policy mix for a competitive and climate-neutral industry.
We are Ariadne
The people behind Ariadne
Dimitrios Tsoutsoulopoulos
Universität Stuttgart – Institut für Energiewirtschaft und Rationelle Energieanwendung
