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3 Steps CO2 Performance Ladder
  • Blog
07 May 2026

CO₂ Performance Ladder 4.0 explained: what has changed and why it matters

Organisations across Europe face growing pressure to demonstrate credible climate action – from regulators, clients and investors alike. CO₂ Performance Ladder 4.0 gives that ambition a clear structure and an internationally recognized way to demonstrate ambition, and results. Version 4.0 builds on more than fifteen years of experience.

The Hague first city ceritified CO2 Performance Ladder 4.0
  • News
28 April 2026

The Hague first large city to receive CO₂ Performance Ladder 4.0 certification

As the first of the major Dutch municipalities, The Hague has been certified on version 4.0 of the CO₂ Performance Ladder, at Step 1. Achieving the certificate was no straightforward task. There were questions about whether the CO₂ footprint was correct, and identifying key persons also proved quite an…

Norit CO2 Performance Ladder
  • Practical story
21 April 2026

From purification to reduction: how NORIT is tackling its own CO₂ emissions

Your tapwater has been purified with it. So has the sugar in your tea. The petrol fumes in your car are captured by it. Activated carbon is one of the most widely used purification materials in the world, and NORIT has been making it for over a hundred years. For a company that contributes to cleaner water…

ISO50001 vs co2pl
  • Blog
14 April 2026

ISO 50001 and the CO₂ Performance Ladder: how they work together in practice

Improving energy efficiency is no longer optional. For many organisations, it is a strategic priority driven by cost control, regulatory requirements and the need to reduce emissions. This is especially relevant for contractors and suppliers working with public or private clients who increasingly require structured carbon management as part…

Ladder and innovation
  • News
31 March 2026

New study: CO₂ Performance Ladder linked to increased innovation among companies

The CO₂ Performance Ladder does more than just reduce carbon emissions. New research from the Utrecht University Centre for Public Procurement (UUCePP) shows that its use in public procurement is also linked to improved technological innovation among companies. The study – carried out as part of an EU…

certificate step 1
  • News
24 March 2026

‘Energetic’ Barneveld awarded CO₂ Performance Ladder 4.0 certificate Step 1

Barneveld has become one of the first municipalities certified at Step 1 of the CO2 Performance Ladder version 4.0. The local authority in Gelderland is strongly committed to reducing and greening its energy consumption, including through the procurement of locally generated energy. By establishing and supporting sustainable energy initiatives, Barneveld aims not only to reduce CO2 emissions, but also to stimulate the local…

Green Public Procurement Portugal
  • Blog
16 March 2026

Strengthening Green Public Procurement in Portugal

The CO₂ Performance Ladder is currently being implemented in seven countries. To support effective implementation, SKAO collaborates closely with local partners, who lead its introduction and dissemination at the national level. In Portugal, a new training programme is helping contracting authorities strengthen their capacity for Green Public Procurement (GPP). Developed by SKAO’s…

What are biogas and green gas
  • Blog
10 March 2026

What are biogas and green gas according to the Ladder? 

The CO₂ Performance Ladder encourages the use of renewable fuels. Biogas and green gas are examples of such fuels. In this article, we explain what biogas and green gas are, the differences between them, and how organisations should manage them as part of certification under the CO₂ Performance Ladder.  How is biogas produced?  Biogas is produced…

measure list 2026
  • Blog
02 March 2026

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…

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