Green Options

This year’s Solar Decathlon at the National Mall has come to a close, and the winner has been crowned! Germany, for the second year in a row, has taken the gold for it’s Net Zero, solar powered home after a week long competition that brought many innovative ideas to light.

Last July, the City & County of San Francisco launched the first local solar energy incentive program in the nation, The results are in, and, the program is an unequivocal success.

In the year since our solar energy incentive program GoSolarSF launched, we have seen a 450% increase in applications for solar installations in San Francisco over the previous year, from 200 to 850. And despite the current recession, 56 applicants met our low-income standards and will receive incentive payments.

Before being ‘green’ became fashionable, and terms like ‘eco-chic’ were coined, being environmentally conscious was synonymous with words like ‘granola’ and ‘treehugger,’ generalizing the eco-conscious crowd as a free-spirited-Birkenstock-wearing-Grateful-Dead-loving bunch of Liberal hippies chanting ‘Peace, man.’

But being green has definitely gone mainstream, and from celebs like Julia Louis-Dreyfus with her lavish, multi-million dollar solar-powered home, to Pierce Brosnan, aptly named the ‘Best Dressed Environmentalist’ by the Sustainable Style Foundation, the stereotype of the gritty, unkempt nature wanderer that once dominated the category no longer applies.

Recently, MSN posted a list of the ‘Top 14 Green Celebrities,’ which contained some long-time environmental advocates and a few surprising new additions, all echoing a commitment to championing this important cause through various initiatives like Leonardo DiCaprio’s documentary film about global warming, the 11th Hour, featuring interviews with green leaders and a companion website where everyone can sign up to take action in their local communities, and George Clooney’s Oil Change, a campaign aimed at ending America’s independence on oil.  

Interview: Dr. W.S. Sampath at CSU has developed new “thin film” solar technology

Thin film has been the holy grail of solar technology: everyone is seeking it, but so far its market penetration is well under 5%, and its use in large-area applications, such as for solar photovoltaic (PV) modules large enough to power buildings, has barely developed. (Thin film light absorbers are about 1 micron thick and are less costly to produce, as compared to the silicon found in traditional solar PV modules, which at around 200 microns thick is still thinner than a human hair.)

So I was very interested to hear that Dr. W. S. Sampath, professor of mechanical engineering at Colorado State University (CSU), has developed a new, more streamlined production process that promises to reduce the cost of thin film even more. The company bringing his product to market is AVA Solar, who received a $3 million solar incubator grant from the U.S. Department of Energy’s Solar America Initiative. I spoke to Dr. Sampath by telephone on Friday, and asked him how his technology is different from that of First Solar, currently the market leader.

“The difference is in the manufacturing process. It is much more streamlined and integrated, with fewer production steps, which brings down the manufacturing cost.” Dr. Sampath was careful to note that AVA Solar worked in collaboration with First Solar in developing the production process. “There is a huge demand, so it makes sense to work together.” In other words, when the world is beating a path to your door for a better solar mousetrap, it pays to be open and collaborate to achieve faster, better and cheaper solutions, so as to grow the market much faster.

Gary GerberLast week I spoke with Ryan Chao, director of Satellite Housing in Berkeley, CA about a new project that featured solar energy. Today, my guest is Gary Gerber, President and Founder of Sun Light and Power, the company that installed the solar array for Satellite Housing.

Gary founded his company in 1976, and he tells the story of what happened to solar power, and how

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