Tomorrow’s leaders are already working towards a cleaner future — that could be as bright as the sun.

The Solar Decathlon, an international competition hosted by the US Department of Energy (DOE), is showcasing solar-powered home designs created by students from around the world.

Students selected to participate were given two years to design and build the prototype solar homes, which must be carbon neutral and completely powered by the sun. The projects, many costing hundreds of thousands of dollars, are on display at the National Mall in Washington through Sunday (Oct. 18).

Two thousand students came together to form 20 teams, which are competing to win prizes in several categories, such as best architecture or engineering or “comfort zone”.

The Solar Decathlon Proposal Review Committee, which is made up of engineers, scientist, and other experts from the DOE and its National Renewable Energy Laboratory, selected the teams that they thought had the ability to meet the strict structural and safety requirements. Once selected, each team was given $100,000 to get started. Projects often require more, so individual teams then raise any additional funds.

“The U.S. Department of Energy supports the Solar Decathlon to encourage young people to pursue careers in science and engineering. DOE also supports the event to help move solar energy technologies to the market place faster. The Solar Decathlon helps accelerate the research and development of energy-efficiency and energy production technologies,” said John Horst, spokesperson for the Department of Energy.

The Solar Village

The 800-square-feet homes must be completely powered by the sun. They are meant to be prototype zero-energy, zero-carbon homes. The hope is that this competition stimulates research that will reduce the cost of solar-powered homes and the advancement of solar technology. While the Solar Decathlon aims to find ways to save money with solar technology, design and comfort are important as well.

The student teams represent universities from across North America, and two from Europe:

Reflective Louvers

• Cornell University
• Iowa State University
• Penn State
• Rice University
• Team Alberta (University of Calgary, SAIT Polytechnic, Alberta College of Art + Design, Mount Royal College)
• Team Boston (Boston Architectural College, Tufts University)
• Team California (Santa Clara University, California College of the Arts)
• Team Germany (Technische Universität Darmstadt)
• Team Missouri (Missouri University of Science and Technology, University of Missouri)
• Team Ontario/BC (University of Waterloo, Ryerson University, Simon Fraser University)
• Team Spain (Universidad Politécnica de Madrid)
• The Ohio State University
• The University of Arizona
• Universidad de Puerto Rico
• University of Illinois at Urbana-Champaign
• University of Kentucky
• University of Louisiana at Lafayette
• University of Minnesota
• University of Wisconsin-Milwaukee
• Virginia Tech
  

  A student built solar home

There are a total of 10 contests throughout the competition, which began Oct. 8.

• Architecture: Architectural elements, holistic design, and inspiration are evaluated when looking at a house’s design. Market Viability: Houses are marketed to an audience of the team’s choice. Points are given based on a realistic approach to affordability, livability, ease of building, and marketability.
• Engineering: Houses are assessed based on reliability, innovation, efficiency, and functionality in engineering excellence.
• Lighting Design: Houses must include functional, energy-efficient, and aesthetically pleasing lighting systems. The judges score on the following categories: electric lighting quality, day lighting quality, ease of operation, flexibility, energy efficiency, and building integration.
• Communications: Teams are scored based on their verbal, written, and photographic communication of their houses. Messages must be consistent, effective, and able to engage a wide audience.
• Comfort Zone: In order to score points in this contest, houses must maintain a certain temperature and humidity inside during the competition.
• Hot Water: This contest displays how solar hot water systems are able to supply enough hot water daily.
• Appliances: House appliances must run like those of the average US home while using less energy. Throughout the contest, the houses must keep refrigerator and freezer temperatures within the typical range, wash and dry laundry, as well as run the dishwasher.
• Home Entertainment: This contest exhibits the houses’ ability to go beyond basic functions, like powering modern electronics and conveniences.
• Net Metering: The newest contest, measures how much energy the houses produce and consume throughout the competition, and rewards teams for producing more energy than they consume.

“Certainly it’s also important to raise awareness among the general public about renewable energy and energy efficiency and what technologies are available — that is, commercial off-the-shelf materials and supplies – today that can be used to help reduce energy use,” said Horst.

The Solar Decathlon encourages students to find practical solutions to a global problem. Their research is expected to be influential in the marketplace and bridge the worlds of science and business, showing that they have both dollar and environmental value.

The need for alternative energy is no longer an issue for the future. According to the US Department of Energy, the United States consumes about 100 quads of energy per year, with 22% of that coming from the residential sector. The cost of that energy is almost $1 million per minute, and the US consumes one-fourth of the world’s energy resources, but only contains 5% of the world’s population.

Copyright © 2009 Green Right Now | Distributed by Noofangle Media

By Tom Kessler

Colorado developers have announced what they say is the country’s largest net-zero energy, master-planned community in Arvada, Colo., a suburb of Denver. Geos Neighborhood, which will begin infrastructure construction this fall, will feature 250 residences and can generate enough renewable energy to supply 100 percent of the annual energy needs of the entire community, the developers say.

The community will rely mainly on on-site solar and geothermal systems designed to supply its energy needs. Geos also will employ a “groundbreaking checkerboard placement pattern” of the homes that maximizes solar efficiency, as well as advanced storm water recycling, rain permeable surfaces to mitigate run off and heat recovery ventilators.

Geos Neighborhood ’s developers say they expect to offer sustainable living at accessible price points — homes will begin in the $200,000s, ranging up to around $500,000 for the biggest models replete with options. The homes will range from 860 square feet to 3,683 square feet and include single-family homes, townhomes, paired homes, row homes, multi-level condos and co-housing.

“It’s great that there are multimillion dollar homes out there with every eco bell and whistle imaginable,” said project developer Norbert Klebl in a news release. “Our goal with the Geos Neighborhood is to deliver these same opportunities to more than just the select few by designing a lifestyle community that is financially accessible to many more people.”

Groundbreaking is slated for this fall. More information about Geos Neighborhood and its features are available online.