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The reduction of energy consumption and emission of climate gases like CO2 is a big challenge for the global industry. Practical greenhouse gas reduction actions can help reducing the risks from a warming climate and deliver considerable economic benefits. Economic and ecological advantages of construction methods using geosynthetics are already well known. The reduction of excavation masses and truck transport in areas with soft soil conditions by using geogrid soil reinforcement technology is only one of many examples. This paper will illustrate the potential in reduction of the carbon footprint by comparing and evaluating the cumulated energy demand (CED) and the climate related CO2 emissions for the complete life cycle of the used building materials for conventional construction methods vs. geosynthetic construction alternatives in infrastructural applications.