Location: Zurich, Switzerland
Heating is the main energy use in homes, accounting for 70% of total. Consequently, good insulation in residences can have a big impact on household energy efficiency. In addition, about a third of a home’s heat loss takes place through its windows and doors, so installing more efficient windows can make a big dent in energy use. However, replacing old windows is an expensive endeavor. Many people in Eastern Europe are facing just this dilemma; about 40% of Eastern European homes were built before the 1960s, when there were no energy efficiency requirements, and they end up spending much more on heating than they should.
ReWinner has found a win-win solution for affordable energy efficient homes. They take used building materials, including windows, that would be discarded in Western European countries and deliver them to Eastern Europe. While these used windows are older, they are twice as effective at keeping in heat as many of the windows still in use in Eastern Europe. Less building materials are thrown into landfills, and many families are provided an affordable way to update their houses, reduce CO2 emissions, and save money on their heating bills.
ReWinner is a finalist in the Climate-KIC Venture Competition, placing it among 17 other climate ventures that have all won awards in KIC competitions around Europe. ReWinner began in 2013 and is currently partnering with the City of Zurich to pilot this project. They are looking for more partners to expand their work and provide more low-cost building materials to those who need them. Are your windows energy efficient?
Environmental impact: Avoided use of fossil fuels, including avoided emission of GHGs and harmful substances, reduced landfills
Looking to discover more impact ventures? Join us at www.groundupproject.net