
(Photo Source: The New American Home, BuilderOnline.com)
Talk about green–can you get any more green than a “zero-energy home?” Maybe not, but new technology and a desire to keep pushing the bounds leads us to the possibility that one day we might even have a surplus of resources?
Enter zero-energy homes (ZEH). A zero-energy home is one that is still hooked up to the energy grid, but during off-peak time periods, it generates more power than it uses by combining renewable energy technologies with advanced energy efficient construction. In fact, it’s entirely feasible that these structures can actually generate enough power to sell surplus energy back to the utilities company. Nevertheless, with a ZEH demand for public utilities is considerably lower so that by the end of a year, these homes produce as much energy as they consume during the year. Voila! Net zero energy usage!
At the recent International Builders Show, held January 20-23 in Las Vegas this year, company Blue Heron displayed The New American Home, showcasing these technologies which include “active solar design (photovoltaic cells), passive solar design (orientation and shading), an insulated concrete wall system, and a revolutionary gas-powered mechanical HVAC system.” Though you would think a-more-than-just-energy-efficient home would be small to induce such energy savings, this home is nearly 9,000 square feet, with a multi-million dollar price tag to match.
Of course this isn’t the only ZEH home out there today (which is a good thing, since this one sold before it was even completed). Builder Esopus completed a 4,000 square foot home ZEH more than a year ago, the first in the state of New York. At a price tag of $1,0550,000 (it’s still for sale) this home takes advantage of insulated concrete form walls and frames, geothermal wells, a ground-source heat-pump system for heating and cooling, and solar panels on the roof.
The ZEH is a trend that may very well take stronghold in the future, taking hold in non-residential sectors as well. Washington University utilizes the zero energy concept in the construction of The Living Learning Center at the Tyson Research Center. Future home of a local high school outreach program, the University hopes to go beyond green with this project, using photovoltaic cells for energy and a microfiltration and UV sterilization system for purifying rainwater collected from the roof.
Hey, wouldn’t it be cool if one day energy efficiency ratings were replaced by energy productivity ratings instead?!
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