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Harmonised cost optimal methodologies for the Energy Performance in Buildings Directive - EEB principles to calculate minimum energy performance requirements in buildings

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The draft of recast of the Energy Performance in Buildings Directive (EPBD) calls for a calculation of the cost optimal level of the energy performance requirements for new and renovated buildings. The EEB (European Environmental Bureau - Federation of Environmental Citizens Organisations) considers that cost optimal calculations can often be too short-sighted to deal with the urgent need for societal answers to the climate change challenge and can risk underestimating the potential for energy renovations in the building sector. The EEB insists that the calculation should be informed by a long term cost effective figure of reaching a certain energy efficiency target which sufficiently contributes to the fight on climate change. Life-cycle costing based on net present values provides a sound basis for the development of a common methodology for calculating cost-optimal levels of renovation. Cost-optimal levels should be calculated from a broader perspective than a short term, private economic one.