Recently, the International Passive House Association (iPHA) and the North American Passive House Network (NAPHN) have introduced the concept that “efficiency is the first renewable energy”. For several years, we have been told that “the least expensive energy is the energy we don’t use.” From a technical perspective, neither phrase is accurate, but if you compare the relative outcomes of employing renewable energy versus applying energy efficiency measures, they are…
Is Efficiency a Renewable Energy?
