The key figures shown relate to the energy consumption and carbon emissions of the main corporate units in Germany, Europe, the USA, and Australia. The German and European data is estimated from material-specific cost types assuming average prices.

Energy consumption levels and the greenhouse gas emissions inferred from them directly depend on the nature and scale of the projects in progress. A tunneling project with a tunnel boring machine, for example, generates far greater indirect carbon emissions than a building construction site or a facility management project. The trend in the key figures therefore indicates very little as regards actual climate protection activity.

All HOCHTIEF units (including HOCHTIEF-led joint ventures) in the following countries are included in the data:

Australia (Leighton Holdings)
Austria
Czech Republic
Germany
Greece
Hungary
Luxembourg
Poland
UK
USA (Turner Construction)