
What is the Department of Energy Solar Decathlon?
The U.S. Department of Energy Solar Decathlon is an award-winning program that challenges collegiate teams to design, build, and operate solar-powered houses that are cost-effective, energy-efficient, and attractive. The winner of the competition is the team that best blends affordability, consumer appeal, and design excellence with optimal energy production and maximum efficiency.
The first Solar Decathlon was held in 2002; the competition has since occurred biennially in 2005, 2007, and 2009. The next event will take place at the National Mall’s West Potomac Park in Washington, D.C., Sept. 23–Oct. 2, 2011. Open to the public free of charge, visitors can tour the houses, gather ideas to use in their own homes, and learn how energy-saving features can help them save money today.
The U.S. Department of Energy is sponsoring a contest for colleges from around the world at $100K a piece (I guess the DOE hasn’t gotten the memo that our government is BROKE) to construct cost-effective solar-powered homes.
How much power will the solar-powered homes produce? Via The Weekly Standard:
Teisha Villegas, a fifth year architecture student at CCNY, was a bit cagey with the details, but it looked nice inside! “I’m not sure,” Villegas said when I asked how many kilowatts the 40 solar panels on the roof were bringing in today. “I haven’t had a reading on a bright sunny day.”
The house has the potential to bring in 8 kilowatts of energy (although not on a day like this).
How cost-effective are these homes?
When I asked how much the house cost, Villegas was again slow to reveal the details. “Not one of the cheap ones,” she said, saying that since it was built in New York City it had to meet the city’s strict codes. “I can’t say the price tag because we’re still negotiating with the affordability people.” One element of the competition is to be able to build affordable green energy housing.
Finally, Villegas conceded the price tag came to about $450,000, “which is just parts” since CCNY students did all the labor. Another student from the same team, Yinery Baez, also a fifth year architecture student, said that $500,000 is a more accurate figure, but that they believe the price could be dropped to about $300,000 if it were ever to be mass produced.
I’m not sure these guys have ever heard about the general cost estimating rule of thumb for new home construction: 25% material, 25% labor, 25% land cost, 12.5% builder profit, & 12.5% builder overhead. Using this estimation, the home they built would cost nearly $2,000,000. However,it would be really, really energy-efficient; saving you money on your energy bills.
How much square footage will $500,000 of energy-efficient construction material purchase?
Depending on who you asked, the square the footage of the home is either 650 (Villegas) or 750 (Baez).
I find it surprising that our contestants don’t know how big the structure they constructed is, because the rules are very specific about square footage (and all the calculations required to design the systems for the home):
6-2. Finished Square Footage
The finished square footage, as defined by ANSI Z765-2003, “Square Footage—Method for Calculating,” shall be at least 600 ft2 (55.7 m2), but shall not exceed 1000 ft2 (92.9 m2).
To sum up the ‘Solar Decathlon’ we, the American tax payers, are subsidizing a contest (and teams from China, New Zealand, Canada & Belgium) to develop cost-effective solar-powered homes. And what do we get? Homes barely larger than sheds that would cost nearly $2,000,000 to build.
What a deal.
And, solar-powered houses don’t work so well when it rains.

God has a great sense of humor.