Clean is the innovation space for those who develop and need to solve water and environmental challenges.

Find events How we work

Clean is The Danish Water and Environmental Cluster and our vision is for Danish companies to be world leaders in the water and environmental field. We are the innovation space for both those who develop water and environmental solutions and those who need to solve water and environmental challenges.

How we work


The water and environmental technology sector

71.000 +

full-time jobs in the sector, of which 49,171 jobs in water and environmental technology companies

165,2 B

DKK 119.1 billion in turnover in the cluster, of which DKK 119.1 billion in water and environmental technology companies

57,4 B

DKK in exports, of which DKK 52.8 billion in water and environmental technology companies

3.7 %

of the whole Danish export comes from the water and enviornmental sector

9.700 +

scientific articles published regarding water and environmental technology from 2018 to 2023

839

water and environmental technology companies in Denmark

The Danish Water & Environmental Cluster


Clean membership

Innovation

You can expect concrete activities tailored to promote innovation in your company.

New markets

You can explore new markets and expand your company’s international presence.

Network

You’ll have the opportunity to meet your next customer, supplier, investor, or business partner.

Knowledge

As a member, you get access to unique research and the opportunity to shape the future of water and environmental technology knowledge.

Visibility

We showcase our members nationally and internationally and share your company’s success stories.

Projects

You’ll have access to a wide portfolio of projects in areas such as circular economy, water, waste and resources.


Latest news

All news
En samling køleskabe, vaskemaskiner, opvaskemaskiner og komfurer er adskilt. Enkeltdelene er vejet på Teknologisk Institut og skal nu have beregnet deres præcise klimaaftryk. Foto: Teknologisk Institut
News

10. Apr 2025

Longer-lasting appliances to reduce resource waste

News

31. Mar 2025

NxPAS: Innovative CO₂ Measurement for CCUS Plants

Frank Rosenbjerg fra All In On Green taler til G20 Social 2024
Case

21. Mar 2025

All In On Green: Danish Environmental Technology Expands to Brazil with Support from Clean

News

19. Mar 2025

Fellowship and competition drive climate action in the workplace

person in white lab coat in a laboratory wooden board
News

3. Mar 2025

Plastic and wood waste finds a new life in 3D-printed homes

Special claw gripper working on metal scrapyard with old rusty pieces
Case

24. Feb 2025

Solum: Sorted construction waste optimized with robots

Two people standing in a conference room
News

19. Feb 2025

Clean and Water Valley Denmark sign strategic partnership agreement

Black wooden photo frame and plant on gray background
Case

17. Feb 2025

Naturpladen: Regenerative acoustic panels create a sustainable future

News

11. Feb 2025

New collaboration with Green Hub Denmark strengthens Clean’s position in North Jutland

Case

10. Feb 2025

Eseba: Upcycling textiles into lamps

Case

5. Feb 2025

Urban Tin Mining: The future of recycling tin cans

A very old banyan tree with its beautiful spreading roots,
News

31. Jan 2025

Annual report for global cleantech collaboration

Funding
News

17. Jan 2025

Clean Awards Funding to Five Danish SMEs for International Expansion

Case

12. Jan 2025

From sensors to health: the link between indoor climate and sick absence

Workshop in Copenhagen with ENDURANCE project
News

10. Jan 2025

ENDURANCE: From tools to practice

Knowledge Bridge 2024 CO2
Case

7. Jan 2025

Flexible measurement system for CO2 capture systems – From theory to test

ApexBrasil and Exame Celebrate P.R.E.S.I. at the Best of International Business 2024 Award in São Paulo
News

21. Dec 2024

ApexBrasil and Exame Celebrate P.R.E.S.I. at the Best of International Business 2024 Award in São Paulo

Knowledge Bridge with KU, FRB and SmartBrønd-2024
Case

19. Dec 2024

Smart Brønd: Unique technology has created greater understanding

Compostable coffee cup
News

16. Dec 2024

Grounded Cups boost circular production through Closing Loops

Knowledge Bridge DBI A4 arkitekter Ingeniører A/S Fire Safety Properties Smoke Density
Case

27. Nov 2024

Old doors get new life and better smoke density

G20 Social 2024 Greennova Conexão 2030 SELECIONADAS Photo Erbs Jr. -18250
News

26. Nov 2024

Rootzone and Partners are creating a greener future

Intensive development process across value chains and disciplines
News

25. Nov 2024

Intense development across value chains and disciplines

Case

22. Nov 2024

Collaboration creates natural plant protection

Knowledge Bridge Industry symbiosis Industrial resource symbiosis Environmental improvements Waste Greenhouse Gas Protocol Product Life Cycle Guideline (GHGP PLC), ISO 14040-44-serien og Product Environmental Footprint (PEF)-methods
Case

11. Nov 2024

THE UPCYCL: Industrial-symbiosis reveals great environmental benefit of upcycling

Clean DTU Event 2024
News

8. Nov 2024

Clean: Self-management and collaboration

Minister for Climate and Energy Lars Aagaard to Danish Pyrolysis and Biochar Forum 2024
News

1. Nov 2024

Denmark’s leading pyrolysis players gather around a hot agenda


Events

All events
  • Webinar

    2025

    22. Apr

    How to enter a new market – Canada

    Are you interested in expanding your business to North America? Then join this webinar!

  • Webinar

    2025

    22. Apr

    How to enter a new market – US

    Are you interested in expanding your business to North America? Then join this webinar!

  • Conference
    Photo of people at Loop Forum 2024

    2025

    29.–30. Apr

    LOOP 2025

    Join us at LOOP Forum, the year’s most important event within circular economy, waste and resources!

  • Webinar

    2025

    30. Apr

    Kenyan Water and Sanitation Market (WASH) Opportunities

    Ready to help in the WASH sector? This webinar will explore critical issues in Kenya and identify opportunities for SMEs.

  • Conference
    People at a conference

    2025

    2. May

    Your startup can exhibit at TechBBQ with Clean

    Are you ready to showcase your startup at TechBBQ and connect with international investors, key decision-makers, and top tech innovators?

  • Webinar
    circle in a European city

    2025

    13. May

    Get AI-powered market insights

    Clean has developed a new digital tool that gives companies access to a comprehensive database of valuable and market-defining data for your further…

  • Webinar

    2025

    20. May

    From Colombia to Europe: Green Partnerships in Action

    Is your organization exploring international collaboration in sustainability and the circular economy? Then don’t miss this upcoming webinar.

  • Delegation

    2025

    2.–6. Jun

    CCUS and Hydrogen delegation to Canada

    Join us for an exciting trade promotion trip to Canada, focusing on CCUS and hydrogen technologies.

  • Workshop
    Workshop in Copenhagen with ENDURANCE project

    2025

    10. Jun

    Unlock Green Innovation for Clusters

    Join the ENDURANCE Workshop on June 10 to boost green innovation with tools, insights & networking – online or in-person in Copenhagen.

  • Matchmaking
    Water Ocean Horizon

    2025

    11.–12. Jun

    Tech Tour Water Tech

    Join TechTour and see the most innovative water startups in the world in Aarhus!