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Is there not a risk of forgetting about other consumption? We focus on winter energy consumption, but there are plenty of other types of energy involved in the building. Is there not a risk of consuming more gray energy than use energy?

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Architects and the world of construction are responsible for 50% of exploited natural energies, 45% of total energy consumption, 40% of generated waste and 30% of greenhouse gas emissions. We are therefore directly concerned and cannot remain indifferent to these questions.

In this environmental crisis, the buzzword “sustainable development” appeared. People used to say “I am building a passive house, so I am doing something sustainable”, or “I am using ecological materials, so I am doing something sustainable”. In fact, these are all varied aspects of sustainable development, but if this same passive house is 5 km from public transport and you park your 4x4 in front of your garage every day, the whole setting is not really sustainable.