White Roofs Could Save U.S. $735 Million per Year

Via Inhabitat.com, a brief but interesting analysis of the economics underpinning the cooling effect that white roofs have on buildings — especially air-conditioned ones — as well as their ability to drastically lower energy costs.  As the article notes:

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Since being appointed as the Secretary of Energy, Dr. Steven Chu has been talking all about the benefits of white roofs. Now he’s going to put his own department where his mouth is by mandating that all new roofs on Energy Department buildings be either white or reflective. In his statement this week he noted the cooling effect that white roofs have on buildings — especially air-conditioned ones — as well as their ability to drastically lower energy costs – $735 million per year to be exact, if 85% of all air-conditioned buildings in the US had white roofs. With all the crises that have been going down lately, we could really use that moolah!!

Dr. Chu has been touting white roofs for a while now. In 2009, he talked to The Daily Show’s Jon Stewart about their benefits. “When you’re thinking of putting on a new roof, make it white,” Dr. Chu said. “It costs no more to make it white than to make it black,” he added. It won’t cost any more to make your new roof white rather than the usual gray or black – and did we mention that it could save us a TON of money?

Cool roofs are one of the quickest and lowest cost ways we can reduce our global carbon emissions and begin the hard work of slowing climate change,” Dr. Chu said in a statement about his new mandate. White roofs could also drastically reduce what is known as the “heat island effect.” It is a phenomenon caused by all of the dark heat absorbing surfaces in urban areas. A study by the Lawrence Berkeley Laboratory’s Heat Island Group showed that increasing the reflectivity of road and roof surfaces in urban areas with populations over 1 million would reduce carbon dioxide emissions 1.2 gigatons of carbon dioxide annually. That’s the equivalent of taking 300 million cars of the road.



This entry was posted on Friday, February 18th, 2011 at 4:35 am and is filed under Uncategorized.  You can follow any responses to this entry through the RSS 2.0 feed.  You can leave a response, or trackback from your own site. 

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About This Blog And Its Author
As potential uses for building and parking lot roofspace continue to grow, unique opportunities to understand and profit from this trend will emerge. Roof Options is committed to tracking the evolving uses of roof estate – spanning solar power, rainwater harvesting, wind power, gardens & farms, “cooling” sites, advertising, apiculture, and telecom transmission platforms – to help unlock the nascent, complex, and expanding roofspace asset class.

Educated at Yale University (Bachelor of Arts - History) and Harvard (Master in Public Policy - International Development), Monty Simus has held a lifelong interest in environmental and conservation issues, primarily as they relate to freshwater scarcity, renewable energy, and national park policy. Working from a water-scarce base in Las Vegas with his wife and son, he is the founder of Water Politics, an organization dedicated to the identification and analysis of geopolitical water issues arising from the world’s growing and vast water deficits, and is also a co-founder of SmartMarkets, an eco-preneurial venture that applies web 2.0 technology and online social networking innovations to motivate energy & water conservation. He previously worked for an independent power producer in Central Asia; co-authored an article appearing in the Summer 2010 issue of the Tulane Environmental Law Journal, titled: “The Water Ethic: The Inexorable Birth Of A Certain Alienable Right”; and authored an article appearing in the inaugural issue of Johns Hopkins University's Global Water Magazine in July 2010 titled: “H2Own: The Water Ethic and an Equitable Market for the Exchange of Individual Water Efficiency Credits.”