We know what an eco-efficient building looks like. It is a big energy saver. It minimizes air infiltration by sealing places that might leak. (The windows do not open.) It lowers solar income with dark-tinted glass, diminishing the cooling load on the building’s air-conditioning system and thereby cutting the amount of fossil-fuel energy used. The power plant in turn releases a smaller amount of pollutants into the environment, and whoever foots the electric bill spends less money. The local utility honors the building as the most energy-saving in its area and holds it up as a model for
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