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Accelerating the renovation of the Bulgarian building stock-BPIE
The study reaffirms that deep retrofitting to high energy efficiency classes is economically more beneficial than “shallow” renovation. It goes further by supporting the concept of “step-by-step” renovation, leading ultimately to a class A or nearly Zero-Energy Building. Such a phased implementation would prevent the “lock-in” effect of shallow renovations, which might deliver “quick wins” in terms of energy saving, but ultimately hamper the achievement of the full potential for economic, social and environmental benefits.
