The Economics of Energy Efficiency in Buildings

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Buildings use around 40% of all energy (even more in most developed regions) and more than 30% of all greenhouse gas emissions can be attributed to buildings.

The potential savings of energy expended on buildings in the EU is 17% by 2020.

Based on the findings of the "Energy Efficiency in Buildings" project about investment costs and energy savings, Trevor Houser of the Peterson Institute for International Economics (PIIE) concludes that building emissions can be cut by 8.2 gigatonnes a year by 2050 with global investment of US$ 1 trillion per year. This substantial sum is significantly reduced by energy savings, resulting in a net cost of US$ 180 billion a year and a negative net present value ranging from US$ 209 billion in the US to just US$ 9 billion in Japan.

 

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