Sustainable Buildings Need Data. So We Shared Ours

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For the first time ever, Ramboll is making its carbon data for buildings openly available for all stakeholders across industry and governments by launching the CO2mpare database. The goal is to close the data gap and, essentially, build better buildings.


The first step to achieving our decarbonisation goals is to understand where the carbon is in our buildings. For this, we need consistent data, which allows us to make comparisons and understand best practice.
But up to this point, this data has either been unavailable or inadequately shared, posing challenges to effective decision-making and decarbonisation efforts in the built environment. It is this issue Ramboll aims to tackle by launching CO2mpare.
With this database it is now possible to:
  • Review typical upfront carbon levels in buildings across six countries and 10 typologies
  • Use the interactive filters to compare average carbon impacts of new-builds vs. renovated buildings
  • See the average distribution of carbon across the dataset
In developing CO2mpare we have incorporated carbon assessments from different countries with different methodologies into a single system that allows for comparisons. But since there are big differences in how each country counts carbon, this is not a simple exercise – a point I will return to in this article. We recognise that this is only the start, and caveats remain in how we can compare the data.

For every m³ of concrete that we demolish and replace with new concrete, we release around 300kg of new CO₂e.

Paul Astle
Decarbonisation Lead at Ramboll
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