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Green Public Procurement with the no. 1 decarbonisation tool

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What is the CO₂ Performance Ladder?

The CO2 Performance Ladder is an easy and effective tool that drives decarbonisation and innovation. It helps governments buy green and make significant climate impact by giving sustainable companies a financial advantage. It serves as both a procurement instrument and a CO2 management system.

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  • Carbon reduction tool for all organisations
  • Certified organisations gain award advantage
  • Compliant with European procurement law
  • Certified organisations cut CO2 twice as fast
  • GPP best practice according to IPCC, OECD, WEF

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Who is already climbing the Ladder?

More than 8,000 organisations already have a CO₂ Performance Ladder certificate and more than 300 contracting authorities use the CO₂ Performance Ladder in tenders.

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CO₂ Performance Ladder countries

The CO2 Performance is expanding across Europe! It is being introduced in France, Germany, Ireland, Portugal and the UK, alongside its established presence in the Netherlands and Belgium. Find out more about the implementation in your country. 

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Testimonials




                        

        
    
    
Willemen Infra and the CO₂ Performance Ladder

    
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Making Amsterdam sustainable with the CO₂ Performance Ladder

    
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TII’s Experience with the CO₂ Performance Ladder

    
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Find out how international contracting authorities and companies work with the CO2 Performance Ladder and what is needed to successfully implement it.



    
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        About SKAO

        

        
            



About SKAO





The Foundation for Climate Friendly Procurement and Business (in Dutch: SKAO) is responsible for all matters regarding the Ladder: its use, its continued development, managing the certification scheme, expanding to new industries. SKAO helps companies and governments reduce CO2, aiming for a climate-neutral business environment by connecting parties, sharing knowledge, and building a strong network.



    
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Blogs

    
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        measure list 2026
        
    
                            
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What is the Measure List? Get started in the new application 

        

Each January, SKAO publishes the new Measure List. This is an overview of energy- and CO₂-saving actions that organisations can implement as part of their certification for the CO₂ Performance Ladder. This year’s list has been released as usual. What’s new, however, is the completely redesigned application in which the Measure List is now…


                            

    
                                    

        Arcadis CO2 Performance Ladder certificate
        
    
                            
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Arcadis first engineering consultancy to be certified at step 3 of Ladder 4.0

        

The drawing board can be the most influential place to drive sustainability in construction, as Arcadis demonstrates. With ambitious sustainability goals, the company became the first engineering consultancy to be certified at step 3 of version 4.0 of the CO₂ Performance Ladder at the end of 2025. Nevertheless, the journey towards zero CO₂ emissions within its own organisation and across the value…


                        









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Receive updates, project cases and news about the CO2 Performance Ladder every other month. Subscribe to our newsletter!








                

                        

							
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Franky Van den Berghe and Dirk Christianen from Willemen Infra show us around at their asphalt plant in Belgium. How does Willemen Infra reduce its carbon emissions by using the CO2 Performance Ladder?







    


                

    

    
    

    

                    
            

    

        

To prepare Amsterdam for major climactic changes the CO₂ Performance Ladder is a guiding principle in Amsterdam’s public procurement. Amsterdam and its partners show us how they work with the Ladder. Over the last 14 years, the CO₂ Performance Ladder has developed into a key Green Public Procurement (GPP) tool and the number one CO₂ management system in the Netherlands and Belgium. To support the implementation of the CO₂ Performance Ladder across Europe, our testimonials represent a selection of stories and examples from the history of the Ladder since 2009. They collect the lessons we have learned: what is needed to successfully implement the Ladder, and what benefits does it bring?


    


                

    

    
    

    

                    
            

    

        

Micheál O’Connor, Senior Procurement Executive at Transport Infrastructure Ireland (TII) talks about his experience implementing the Ladder into their procurement process.






https://www.youtube.com/watch?v=yhhU3ZAM6is