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Welcome to adelphi

We are Europe’s leading independent think-and-do tank and consultancy for climate, environment and development.

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Our Themes

We work in six fields of action for a future fit for grandchildren and support economic and social transformation.

Climate

adelphi theme climate, close up wheat in the field with sun

Adaptation & Vulnerability

Carbon Markets & Pricing

Urban Governance & Smart Cities

Climate Policy

Climate Finance

Local & Regional Climate Protection

Climate Diplomacy

Energy

adelphi theme energy, roof with night sky and light beams

International Energy Transition

Energy & Climate Campaigns

Energy Research, Evaluation & Monitoring

National Energy Transition

Resources

adelphi theme resources, water abstract close-up

Biodiversity

Extractive Resources

Water

Economy

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Circular Economy & Resource Efficiency

Environment & Climate Management

Innovation & Sustainability

Structural Change & Sustainability Strategies

Sustainable Consumption

Sustainable Supply Chains

Green Entrepreneurship

Finance

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Sustainable Finance Policy

Sustainable Financial Instruments

Sustainability Management in Finance

Diplomacy

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Climate & Security

Global Environmental Governance

Water Diplomacy

Climate Diplomacy

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Our Themes

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In Focus

Mosaic Items

German Consumption: Analyzing Planetary Boundaries and Pathways to a Sustainable Lifestyle

Hero Media

Luftaufnahme von Frachtkisten

German Consumption: Analyzing Planetary Boundaries and Pathways to a Sustainable Lifestyle

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News publ. 02. Dec 2024

Economy

EU-Japan Green Alliance Facility

Hero Media

A picturesque scene featuring a traditional Japanese pagoda with multiple tiers, bathed in the warm light of the setting sun. In the background, the majestic Mount Fuji rises, partially covered in snow and surrounded by a layer of clouds. The foreground includes a town nestled at the base of the mountain, with trees and lanterns lining a path leading towards the pagoda. The sky is clear, adding to the serene and tranquil atmosphere of the image.

EU-Japan Green Alliance Facility

Project

Fields of Action

Energy

EMAS Helpdesk 2024

Hero Media

EMAS Helpdesk 2024

Project

Fields of Action

Energie

Climate adaptation in cultural institutions

Hero Media

An abstract painting in green and blue colours

Climate adaptation in cultural institutions

Project

Fields of Action

Climate

Buttons

Top Publications

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In Focus

Opinion

No Security or Prosperity Without Climate Adaptation

Vogelperspektive auf Berlin mit Sicht auf den Tiergarten und dem Brandenburger Tor in der Mitte

No Security or Prosperity Without Climate Adaptation

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Comment by Dr. Beatrice John, Vivianne Rau

Climate

World Wildlife Day: Financing Solutions for Central Asia's Endangered Mammals

Ein Schneeleopard sitzt und guckt seitwärts, hinter ihm sind Bäume mit Schnee verhangen und leichter Schnee rieselt herunter

World Wildlife Day: Financing Solutions for Central Asia's Endangered Mammals

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Comment by Anne Neumann, Christiane Röttger, Dr. Johannes Stahl

Resources

Hidden Agendas, Dangerous Ideologies: How the Populist Right Threatens Climate Adaptation

Der Bundestag in Berlin

Hidden Agendas, Dangerous Ideologies: How the Populist Right Threatens Climate Adaptation

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Comment by Lara Helen Möllney, Vivianne Rau

Beyond Baku – Time for Climate Talks to Come Home

COP29 in Azerbaijan

Beyond Baku – Time for Climate Talks to Come Home

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Comment by Dennis Tänzler

A Climate Policy Nightmare Looms in the USA

USA Flag

A Climate Policy Nightmare Looms in the USA

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Comment by Dennis Tänzler

Populism and the Environmental Crisis: Why Europe Needs a Stronger Democracy

Deutschland, Mörstadt, Natur und Weinberg

Populism and the Environmental Crisis: Why Europe Needs a Stronger Democracy

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Comment by Sarah Velten

Resources

In times of geostrategic crises, Germany must remain a driving force behind Europe's climate policy

Berlin, Paul-Löbe-Haus mit unzähligen bunten Lampen, die sich im Wasser spiegeln

In times of geostrategic crises, Germany must remain a driving force behind Europe's climate policy

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Comment by Dennis Tänzler

Bye-bye Biodiversity!

Aufnahme eines braunen Pilzes im Moos

Bye-bye Biodiversity!

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Comment by Christiane Röttger

The plastic waste stream must be tackled at its source

Ein Foto mit von Plastik überfülltem Müll

The plastic waste stream must be tackled at its source

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Comment by Evita Hegmann, Johanna Katharina Mützel, Maro Luisa Schulte

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Opinion

News

US energy dynamics extend far beyond Washington

Arthur Ravenel Jr. Bridge, Charleston, United States

US energy dynamics extend far beyond Washington

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News publ. 22. Sep 2026

Kenya Uganda Adaptation Accelerator Launched to Unlock Investment for Adaptation SMEs

KUAA Launch

Kenya Uganda Adaptation Accelerator Launched to Unlock Investment for Adaptation SMEs

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News publ. 13. Jul 2026

Bonn climate negotiations: adelphi supports pathways towards a fairer, more resilient and peaceful world

Round table discussion at Bonn June climate meetings

Bonn climate negotiations: adelphi supports pathways towards a fairer, more resilient and peaceful world

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News publ. 19. Jun 2026

Exposed Again: Germany, European Energy Security, and the Lessons of the Iran Conflict

Tanker on a cloudy sea

Exposed Again: Germany, European Energy Security, and the Lessons of the Iran Conflict

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News publ. 12. Jun 2026

adelphi sharpens its profiles with a new structure

Sharpening focus, nature, environment

adelphi sharpens its profiles with a new structure

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News publ. 26. Jan 2026

Advancing the circular economy in a decisive decade

Abstract globe

Advancing the circular economy in a decisive decade

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News publ. 20. Jan 2026

Shared pathways to net zero in Korea and Germany

Germany Korea Delegation

Shared pathways to net zero in Korea and Germany

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News publ. 10. Dec 2025

Energy

Ten years after Paris: adelphi drives implementation initiatives at COP30

COP30 Plenary

Ten years after Paris: adelphi drives implementation initiatives at COP30

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News publ. 14. Nov 2025

New study shows Europe can cut the cost of recycling: Member states must now deliver

Glass recycling

New study shows Europe can cut the cost of recycling: Member states must now deliver

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News publ. 28. Oct 2025

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News

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Careers at adelphi

Content

At adelphi, you can be involved in exciting work related to science, politics and policy-making around the world. Contribute your ideas and skillset to our interdisciplinary, international teams.

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Careers

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Contact Us

Content

+49 (30) 8900068-0
officeadelphi [dot] de (office[at]adelphi[dot]de)

Press Inquiries

+49 (30) 8900068-365
pradelphi [dot] de (pr[at]adelphi[dot]de)

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Contact Us

Who We Are

Who We Are

Together with adelphi research and global we draw on over 25 years of experience in sustainable transformation.

Who We Are
What We Do

What We Do

As an independent think tank and leading political consultancy, we are committed to a secure, fair and liveable future.

What We Do
What We Think

What We Think

This decade is crucial for the future of the planet.

What We Think