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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- Blog
My CO₂ Performance Ladder: one clear digital environment for your certification
With the launch of the new version (4.0) and website of the CO2 Performance Ladder in early 2025, the login environment has also been updated. From now on, there’s no need to open the Handbook or the practical guide as a PDF — you can find all the information about…

- Blog
Building standards: the CO₂ Performance Ladder vs BREEAM, LEED and Level(s)
When it comes to assessing and certifying the sustainability of buildings, several tools are widely used. Among the best known are BREEAM (Building Research Establishment Environmental Assessment Method) and LEED (Leadership in Energy and Environmental Design). In addition to these, there are regional and national initiatives such as Ireland’s Home…
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