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Secretary of Energy Steven Chu

Secretary of Energy Steven Chu

Yesterday the New York Times published an interview (including some of the original audio) with our new Energy Secretary, Steven Chu. Among other comments, he said that to address the climate emergency, we need “Nobel-level breakthroughs” in several key areas – batteries, biofuels, and solar photovoltaics.” As an illustration, he pointed out:

The photovoltaics we have today, … without subsidy, and without even the additional cost of storage, it’s about a factor of five higher than electricity generation by gas or coal. Suppose someone comes along and invents a way of getting … solar photovoltaics at one fifth the cost, so you don’t even think about subsidies anymore. You just slap it everywhere… That, in my opinion, would take something, which I would say, is a bit of a breakthrough.”

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Solar Power International Logo

Solar Power International Logo

The opening keynotes at the Solar Power International trade show last week were eye-opening. (See the Tuesday Keynotes video on this page – Resch at 20 minutes, Hamm at 37 minutes.)

Rhone Resch of the Solar Energy Industries Association first told the story of getting the investment tax credit for solar renewed – 17 failed votes before it finally passed with the Paulson Bailout bill. He then outlined the benefits to the solar industry of the ITC – stability for solar energy businesses, creation of thousands of new business opportunities due to the remove of the residential solar cap, and a return to leadership of the US in solar. “Solar energy is going to create 440k new jobs, 1.2 million new solar installations, and 28 gigawatts of new capacity – enough to power seven million homes throughout the U.S.”

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Exponential growth of computing. 20th to 21st ...Image via Wikipedia

In his call to action two weeks ago, Al Gore compared the future development of solar electricity sources to the development of the semiconductor industry. His implication was that Moore’s Law, which reliably predicted that the price/performance of semiconductors doubled every 18 months, would also apply to photovoltaics.

ComputerWorld, in an article two weeks ago, assesses this comparison as flawed. (As did Harry Gray of Cal Tech, as I reported earlier today.)

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On 140 acres of unused land on Nellis Air Forc...Image via Wikipedia

Harry Gray, the Arnold O. Beckman Professor of Chemistry and Founding Director of the Beckman Institute at CalTech, spoke at the American Chemical Society annual meeting in April of this year.

Expert Foresees 10 More Years Of Research & Development To Make Solar Energy Competitive

Gray emphasized this point: “The pressure is on chemists to make hydrogen from something other than natural gas or coal. We’ve got to start making it from sunlight and water.”

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