Positive energy credentials
Everything is getting more expensive, including power and hot water for our own homes. Why is that? It’s because we’re all consuming more and more energy. According to the International Energy Agency (IEA), global energy consumption is set to rise by a third by 2035. Fossil fuels such as oil and gas are still the main sources of energy and, due to their finite nature, are becoming increasingly expensive. It’s high time we made changes to reduce our dependency on this trend as much as possible. Net-zero-energy houses are one way of doing that!
There is a net-zero-energy house like this in Concord, New Hampshire called ROSE Cottage (Renewable, Occupant-driven spatial design, Sustainable building practices, Energy efficient construction). Concord, a town of 40,000 inhabitants, is the state’s capital city, and like the rest of the north-eastern U.S., suffers from bitterly cold winters and often warm, humid summers. ROSE Cottage stands on the edge of a nature conservation area, and was designed by owner Harold Turner to cover all of its energy needs by harnessing it from the sun and earth. Two Bosch geothermal heat pumps and a Buderus solar thermal hot water system provide hot water and warm ambient temperatures in winter and cooling in summer. Collectors on the roof transform sunlight into thermal energy, and water-filled tubing under the property carries heated or cooled water from the ground into the house. The project is being presented at the 2014 International CES in Las Vegas.