Practices

Retrofitting of building: a cost-efficiency analysis

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In 2010, the French Ministry of Research funded a three-year study to analyze possible solutions leading to a reduction in CO2 emissions that could be feasibly implemented across a large city. This study sought to construct cost-effectiveness indicators in various sectors (building, transport, non-carbon energy production). Cost-effectiveness ratios measure the effort required to implement a solution and the impact in terms of CO2 savings.

The results for the buildings are summarized  here.

Comments

What I take in : payback time for such retrofitting coupled with insulation works is around 10 years, which, as it is said in conclusion of the article, is significantly lower than the 30 years+ mentioned in many studies.