Welcome to the World Green Infrastructure Network

Our mission is to advocate and promote the integration of green infrastructure in urban planning, globally.

Our Objectives.

01

Integration advocates.

To be a global advocate for the integration of green infrastructure in urban areas.

02

Spread awareness.

To share information about green roof infrastructure science, practice, economics and environmental and social benefits.

03

Green city planning.

To provide support data for green city planning.

04

Research & Development.

To promote and engage in green infrastructure research and development with like-minded associations and companies.

05

Annual congress.

To hold an annual World Green Infrastructure Congress (WGIC) & Awards.

06

climate benefits.

To promote the benefits of green infrastructure in mitigating the impacts of climate change on urban populations.

Latest posts.

EU chapter

Resilience by design? Future-proofing urban environments through green roofs

We are happy to present the WGIN European Chapter latest White Paper, which explores the numerous benefits of green roofs as part of sustainable urban green infrastructure. This document provides an in-depth overview of the benefits of green infrastructure solutions, featuring real case studies that highlight their positive environmental, social and economic impacts. It also outlines the crucial role the European Union has been playing and can continue to play in supporting the widespread adoption of these solutions through effective policies and robust regulatory frameworks. Luigi Petito, Head of Secretariat of WGIN European Chapter: “We are pleased to have access to a powerful new paper highlighting the broad benefits of urban green infrastructure. This will be especially valuable for our ongoing work on the follow-up to the European Water Resilience Strategy and the forthcoming European Climate Adaptation Plan”. Explore the full White Paper here.

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Latest News

WGIN Elects new President and Vice – President | Press Release

June 20, 2025: Brussels – The World Green Infrastructure Network (WGIN) is pleased to announce that Steven W. Peck, GRP, GRIMP, Honorary ASLA, founder and president of Green Roofs for Healthy Cities (North America), has been elected as President of WGIN for a two-year term. Professor Marta Weber Siwirska, president of the Polish Green Roof Association was elected as the new Vice President. Professor Manfred Köhler, who has provided outstanding leadership in advancing green infrastructure across the globe as the President of WGIN will now serve as Past President for a two year term.  “Over the years, WGIN’s leader have worked to promote urban green infrastructure solutions thanks to the inspiring leadership and the huge knowledge of Professor Manfred Köhler. He helped the World Green Infrastructure Network to lay the foundation for where we stand today. As we look to the future, I am excited to work with Marta Weber-Siwirska and my new colleagues to continue the mission of rapidly deploying green roofs, walls and other forms of green infrastructure in cities worldwide”. Said Steven W. Peck, in reflecting on this important milestone in WGIN’s development. In addition to the new President, WGIN is proud to welcome several new members to its Advisory Board. Read here the full Press Release.

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EU chapter

European Green Infrastructure Day 2025

European Green Infrastructure Day (EGIDay) is the Brussels based policy conference dedicated to exchange views on the state of affairs of urban green infrastructure in the EU and how to unlock their multiple benefits, for citizens, businesses and the environment. The fourth edition of the EGIDay took place on the 24th of April 2025. The event gathered in person EU policymakers, urban green infrastructure experts, local authorities and NGOs to discuss how to turn European cities from grey to green, contributing to climate adaptation and water resilience of Europe’s urban areas.  Speakers: Moderated by Luigi Petito, Head of European Chapter Secretariat, World Green Infrastructure Network Humberto Delgado Rosa, Director for Biodiversity, DG Environment Jutta Paulus, Member of the European Parliament, Group of the Greens/EFA Emily Bankert, Researcher, Buildings Performance Institute Europe Sirpa Pietikäinen, Member of the European Parliament, Group of the European People’s Party Jure Šumi, President of Management Committee & Member of Advisory Board, World Green Infrastructure Network Read the event report Take a look at the photos Download the full programme

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Latest News

PIISA Green Roofs Pilot

  PIISA (Piloting Innovation Insurance Solutions for Adaptation) is a Horizon Europe project that brings together 12 organization’s from 5 European countries, and is co-developing climate resilient insurance portfolios. The project consists of several pilots, including one that aims to provide cost-benefit analyses of green roofs as a climate change adaptation option in the main pilot location in the Netherlands. The effectiveness of insurance solutions to stimulate the adoption of green roofs are being tested in this pilot as well, e.g. information provision and insurance premium discounts. Various enablers and barriers of the uptake of green roofs are being examined as well. Based on this work, public-private partnerships will be identified to investigate sustainable finance arrangements that stimulate investments in green roofs. Business models for the Europe insurance industry will also be developed for the upscaling of nature-based solutions for climate risk. Using expert interviews and workshops it is also being examined how the results for the Netherlands are transferable to other pilot regions, i.e. the Boreal and Mediterranean, using qualitative analysis.   Insurers, e.g. Interpolis, have been involved in the co-creation process for the research in the pilot. Furthermore, (potential) policy holders have been involved in the research process through economic experiments within which the (biodiversity, flood risk reduction, etc.) values of green roofs and the effectiveness of insurance solutions to stimulate the adoption of green roofs have been tested. Insurers, municipalities, water authorities and real estate institutions are being involved in the identification and development of public-private partnerships of sustainable finance arrangements for investments in green roofs. City policymakers and insurers are being interviewed and included in workshops in the Netherlands, and the Boreal and Mediterranean regions to examine how costs and benefits of green roofs differ, and whether additional barriers and enablers should be considered in the scaling up of green roofs as an insurance solution. Partners involved: Institute for Environmental Studies (IVM), Vrije Universiteit (VU) Amsterdam(Lead) Climate Adaptation Services (CAS) Finnish Meteorological Institute(FMI) Tyrsky Consulting Politecnicodi Milano (Polimi) For more information visit: https://piisa-project.eu/pilot1

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Latest News

 iCARI launches RE-URBANEX

WGIN member iCARI kick-starts RE-URBANEX, a large-scale, EU-based public-private research project focused on long-term climate adaptation of built-up areas and building stock renewal. The current project evaluation exceeds €1.5 million and continues to grow, supported by a major PPP grant from STRABAG – one of Europe’s leading construction companies. Coordinated by iCARI and located on a 19,000 m² campus in Brno (Czech Republic), the project combines advanced data science, interdisciplinary collaboration, and high-frequency environmental monitoring. The aim is to test and verify real-world adaptation strategies: vegetation-based cooling, rainwater management, albedo optimization, indoor and outdoor air quality, and emission reduction. CzechGlobe, a top-tier climate change institute of the Czech Academy of Sciences, provides the project’s scientific backbone. Within the RE-URBANEX project, we explore a broad range of climate adaptation solutions and interactions, including green, blue, and grey infrastructure, the impact of urban heat islands, primary energy sources, BioSolar systems (combining greenery and photovoltaics), excess energy storage (including in the form of ice produced from harvested rainwater), indoor environmental quality, air quality, architectural and design strategies, and other innovative components. A dedicated part of the research also focuses on communicating results with an emphasis on practical application. RE-URBANEX is a living lab for cities, researchers, and companies ready to co-create tested, scalable solutions for climate resilience – backed by 15-minute interval measurements, running 7/24/365 over three years. The platform aims to expose and replace ineffective greenwashing with transparent and verifiable results. Timeline: October 2024 – December 2027 Key Deliverables: Climate-Sustainable Campus Plan Adaptation Handbook for Building Renewal Policy Recommendations for Municipalities & States Evidence-Based ESG Report for Public Institutions Guidelines for PPP Design and EU Funding Alignment Educational and Participatory Outputs Call for Technology Partners: If you develop innovative technologies for climate adaptation in urban environments and want to test them under real operational conditions – backed by detailed data and expert evaluation – RE-URBANEX offers a unique opportunity to become part of one of Europe’s most relevant adaptation projects. More information: www.icari.eu/reurbanex

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Latest News

WGIN’s collaboration partner AIPH has published the spring edition of their Global Green City Update

WGIN’s collaboration partner, AIPH, has published the spring edition of their Global Green City Update. You can read it here. This edition includes a variety of key updates and initiatives, such as: An update on the signatory follow-up for the Kunming-Montreal Global Biodiversity Framework The ISOCARP Manifesto for New Regenerative Cities ICLEI’s work on sustainable public procurement The Trees and Design Action Group (TDAG) Seminar Series Building the Future City Auckland – insights into urban sustainability The Global Youth Climate Summit The AIPH Green City Briefing Webinar on April 10th WGIN’s European Green Infrastructure Day The 4th World Congress on Forests and Parks for Public Health And much more on urban greening, biodiversity, and sustainability Explore the latest developments shaping the future of green cities!

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EU chapter

European Green Infrastructure Day 2025

European Green Infrastructure Day (EGIDay) is the Brussels based policy conference dedicated to exchange views on the state of affairs of urban green infrastructure in the EU and how to unlock their multiple benefits, for citizens, businesses and the environment. The fourth edition of the EGIDay took place on the 24th of April 2025. The event gathered in person EU policymakers, urban green infrastructure experts, local authorities and NGOs to discuss how to turn European cities from grey to green, contributing to climate adaptation and water resilience of Europe’s urban areas.  Speakers: Moderated by Luigi Petito, Head of European Chapter Secretariat, World Green Infrastructure Network Humberto Delgado Rosa, Director for Biodiversity, DG Environment Jutta Paulus, Member of the European Parliament, Group of the Greens/EFA Emily Bankert, Researcher, Buildings Performance Institute Europe Sirpa Pietikäinen, Member of the European Parliament, Group of the European People’s Party Jure Šumi, President of Management Committee & Member of Advisory Board, World Green Infrastructure Network Read the event report Take a look at the photos Download the full programme

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CEP’s online meeting
CEP

WGIN Chapter for Emerging Professionals is Launched

World Green Infrastructure Network’s Chapter for Emerging Professionals (C.E.P) is Launched! View page here. The World Green Infrastructure Network (WGIN) has formally launched the Chapter for Emerging Professionals (C.E.P). The official launch occurred during WGIN’s annual general meeting on May 29, 2022. The CEP is a globally inclusive, collaborative, and knowledge-oriented organization aiming to bring students and young professionals together to promote and advocate urban green infrastructure worldwide. CEP is open to emerging green infrastructure enthusiasts worldwide. The current membership comprises students and young professionals from Turkey, Colombia, Brazil, Ghana, Germany, Spain, and India. Membership registration is available here. CEP’s maiden AGM is slated for August 28, 2022 (further details will be provided in due course). Planning is also underway for a networking event between CEP members and corporate GI supply chain actors. More information about C.E.P is available here. Watch the space for more exciting activities and events.

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Read the new Spring 2024 issue: The Urban Agriculture Issue

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