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On the way to zero carbon
1.2 ...and operational energy Concrete is renowned for its intrinsic ability to store and release thermal energy and regulate indoor temperatures, known as thermal mass. In residential buildings energy gains are up to 9%, whereas in office buildings the gains can be as high as 15% when compared to a lightweight structure. That is not all: thermal mass can be "activated" with a properly designed heating and cooling system. European studies of buildings using this technology show an outstanding 66% reduction in operational energy.
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