Researchers at the University of Illinois at Urbana-Champaign and Northwestern University have developed a new type of silicon solar cell that is flexible enough to be used on a curved surface or fabric. Currently, most solar cells are rigid due to the use of plastic in their production.

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We’ve written about Livermore, CA-based startup Cool Earth Solar before. Now the company, which develops inflatable balloon-like solar concentrators, has announced that it is constructing a prototype plant in Livermore. Last week, I spoke to Cool Earth Solar CEO Rob Lamkin to get some more information on the upcoming project.

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Sharp’s new solar-powered streetlight can do it all. Not only does the light operate for ten years without needing maintenance, but it also automatically turns on when it detects an earthquake.

The light use a high-intensity LED spotlight that has a service life of about 40,000 hours. It charges using built-in solar panels during the day, and shines automatically at night. Best of all, Sharp’s streetlight doesn’t create any light pollution—it’s illuminated with a directed light that doesn’t shine into the sky.

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Coal power plants can utilize solar to produce 15%-60% of the electricity. A higher quantity is possible, but requires significantly more modifications to be made to the coal boilers.

Solar Interface

Mirrors, called fresnal reflectors capture the sun’s rays and heat water in the tube above. Steam lines deliver the solar energy to the adjacent coal power plant where existing coal turbines are used to produce an electric current.

The ideal situation for retrofitting a coal power plant with solar includes:

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Smaller start-up car companies, such as Th!nk, have plans for solar power augmented cars on the books too, but the incorporation of solar panels on the Prius would mark the first time a major car manufacturer has done such a thing with one of its models.

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In a statement issued today, the BLM said it will continue to process the applications while, “continuing to identify issues during public scoping underway for the programmatic Environmental Impact Statement (PEIS).

In the statement, BLM Director James Caswell said:

“We heard the concerns expressed during the scoping period about waiting to consider new applications, and we are taking action. By continuing to accept and process new applications for solar energy projects, we will aggressively help meet growing interest in renewable energy sources, while ensuring environmental protections.”

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Several months ago we told you that the Argentinean government was helping the rural zones with their power problems by installing solar energy. That time we are talking about solar energy kitchens for schools in Jujuy. Currently the government is installing solar cells in the province of Catamarca to empower schools, homes and public dependences.

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As vocal advocate for nuclear fission power I recognize that it has many associated questions, but I after 30 years of study, I have determined to my own satisfaction that most of the important questions have reasonably good answers. In contrast, I have not yet found reasonable answers for many of my questions related to other renewable energy sources. (Yes, I - perhaps controversially - classify fission as renewable, but that is a discussion for a different post.)

Solar photovoltaic (PV) cells are a popular and often discussed (see, for example Atlantic City Convention Center Plans Largest Solar Roof in U.S., 10% of U.S. Electricity From Solar by 2025, SF Passes Largest City Solar Program in U.S. (Finally), all of which were published within the past week) form of “renewable” or “green” energy, but a casual scratching of the surface knowledge that many people have about the technology reveals some troubling details.

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Europe is pushing to help solar power spread and Italy is reacting by going forward quickly. The country’s demand is rising even if a large part of Italians are quite doubtful about the advantages of installing solar panels on their homes. The lack of a national strategy, together with an insufficient information, is impeding the use of alternative energy and producing confusion about prices, productivity and maintenance costs.

Despite that, is very surprising what can be done locally. I recently learned about an ecological cemetery in a small town near Milan, in the north of Italy.

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Despite all the talk about solar energy, it only generates a measly .1% of electricity in the US. Meanwhile, national demand for electricity is growing by 2% annually. Considering that solar technology has been in use for decades, why is it not more widespread?

Cheap Fossil Fuels

Even though sunlight is free, fossil fuels in the US have been widely available at a very low cost. There are extensive coal fields all across the country. Nationally, coal produces about 50% of our electricity, with a majority of it being used for base load. That means that coal plants produce a steady stream of electricity a majority of the time.

Natural gas however has skyrocketed in price over the last 6 years. It is widely used to generate electricity during peak times, typically on warmer days when we are cranking up the air conditioning. Natural gas plants can start up quickly and come to the rescue when needed, but the cost of fuel has gotten quite high recently.

Solar energy is very capable of producing peak electricity and is ideally suited for for it. Solar radiation is what causes us to need air conditioning in the first place. The utility companies have started taking notice of solar energy’s potential to generate electricity during peak demand.

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]]> http://cleantechnica.com/2008/04/04/4-factors-slowing-solar-energy-growth-in-us/feed/ http://ecopreneurist.com/2008/03/27/solar-technology-to-be-implemented-in-every-day-use-consumer-products/ http://ecopreneurist.com/2008/03/27/solar-technology-to-be-implemented-in-every-day-use-consumer-products/#comments Fri, 28 Mar 2008 07:05:16 +0000 Angelique van Engelen http://ecopreneurist.com/2008/03/27/solar-technology-to-be-implemented-in-every-day-use-consumer-products/ New solar technology based on organic photoelectrochemical, dye-sensitized cells, is being implemented in hundreds of every day use consumer products ranging from clothing, smart cards, gadgets, lighting to windows and building facades.

Konarka, a Lowell, MS, company pioneering the technology, says it’s ready to market the products in which the solar dye has been implemented after the summer. The technology has a light to energy conversion rate of of 7.2 percent. This compares to 16 to 20 percent of regular, photovoltaic, solar technology.

The advantages of dye solar technology include flexible implementation options. Dye-based solar technology also converts low light and light rays at obscure angles. Plus the electricity generated can be applied to specific current wavelengths.

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]]> http://ecopreneurist.com/2008/03/27/solar-technology-to-be-implemented-in-every-day-use-consumer-products/feed/ http://ecoscraps.com/2008/02/10/war-of-the-redwoods/ http://ecoscraps.com/2008/02/10/war-of-the-redwoods/#comments Sun, 10 Feb 2008 22:20:43 +0000 Shirley Siluk Gregory http://ecoscraps.com/2008/02/10/war-of-the-redwoods/ Plaintiff: a Sunnyvale, California, man with solar panels on his roof; defendants: his environmentalist neighbors and their redwood trees. Verdict: a judge finds the couple in violation of California’s Solar Shade Control Act and orders them to cut down two trees that are keeping the solar panels shaded.

Photo courtesy of Wikimedia Commons

]]> http://ecoscraps.com/2008/02/10/war-of-the-redwoods/feed/ http://greenbuildingelements.com/2008/01/15/cars-and-buildings/ http://greenbuildingelements.com/2008/01/15/cars-and-buildings/#comments Tue, 15 Jan 2008 19:43:33 +0000 Philip Proefrock http://greenbuildingelements.com/2008/01/15/cars-and-buildings/

I’ve been away a bit the last couple of weeks which is why you haven’t heard as much from me as usual. I’ve been learning some new things about cars and automotive technology and seeing the latest models being unveiled. I had an opportunity to find out about the new ethanol process and partnership between General Motors and Coskata Inc. that may prove to be a significant milestone in energy production, and signal a reduction in the use of fossil based materials as fuels.

I also attended the North American International Auto Show (more commonly known around here as the Detroit Auto Show) to see what is new in the automotive world. Over at our sister website, Gas 2.0, I’ve written more about Coskata’s technological development in ethanol production, a next generation process for producing ethanol without using corn or other food as feedstock for the process. Even if you hate cars and never drive one, the Coskata process is interesting because, by using different microbes in the bioreactors, other useful alcohols can be produced, including some that are used in the production of plastics (which have applications in buildings and other products). The front end gasification technologies also can be used to deal with municipal waste streams, in some implementations.

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]]> http://greenbuildingelements.com/2008/01/15/cars-and-buildings/feed/ http://shirleysilukgregory.greenoptions.com/2007/11/06/good-news-maybe-for-green-collar-workers/ http://shirleysilukgregory.greenoptions.com/2007/11/06/good-news-maybe-for-green-collar-workers/#comments Tue, 06 Nov 2007 20:50:06 +0000 Shirley Siluk Gregory http://shirleysilukgregory.greenoptions.com/2007/11/06/good-news-maybe-for-green-collar-workers/ There’s good news for the future of green-collar employment, but it comes with a caveat: maximizing job growth in green industries will require the right public policy support. That means law-makers need to approve measures such as a renewable portfolio standard, incentives for renewable energy, public education programs and adequate funding for research and development.

If such measures are put in place, the U.S. could see as many as one out of every four workers employed by a renewable-energy or energy-efficiency industry by 2030, according to a new report from the American Solar Energy Society (ASES). That’s promising for both U.S. employees and for anyone concerned about reducing greenhouse gas emissions and our dependence on fossil fuels. But it will happen only, as the ASES report says, under “an aggressive deployment forecast scenario.”

That means we, as citizens and consumers, are going to have to apply strong and steady pressure on legislators — local, state and national — to do the right thing. And that, we all know, isn’t easy.

Still, if — as the saying goes — money walks, green-collar types might see Beltway support grow as green industries expand their economic muscle, which means more dollars for lobbying and campaign financing. And, in that regard, the future looks bright.

In the U.S., renewable-energy and energy-efficiency industries are already generating 8.5 million jobs and nearly $970 billion in annual revenues, according to the ASES report. “To put this in perspective,” the report states, “(t)otal sales for Wal-Mart, Exxon-Mobil and General Motors in 2006 were $905 billion.”

While companies on the energy-efficiency side — things like better windows, efficient appliances and insulation — are making more of the money right now, the renewables side is growing more rapidly.

The ASES predicts the hottest, fastest-growing industries will involve solar power, wind energy, ethanol and fuel-cell technologies. With the right level of public support, it says, we could see up to 40 million people employed — as everything from accountants and biochemists to engineers, mechanics and truck drivers — in the renewable-energy and energy-efficiency sectors by 2030, with annual green-industry revenues of $4.5 trillion.

Getting there, though, will require much more than a business-as-usual approach, the ASES report warns.

“This scenario requires appropriate, aggressive, sustained public policies at the federal and state level during next two decades,” it states. Getting decision-makers to come on board might take oil shortages, fossil-fuel price increases, growing security concerns or a greater awareness of the impact of climate change. The fear of suffering economically at a global level might also be a motivator.

“If we fail to invest in (renewable energy and energy efficiency), the United States runs the risk of losing ground to international … programs and industries,” the report concludes. “For the United States to be competitive in a carbon-constrained world, the (renewable energy and energy efficiency) industry will be a critical economic driver.”

]]> http://shirleysilukgregory.greenoptions.com/2007/11/06/good-news-maybe-for-green-collar-workers/feed/ http://shirleysilukgregory.greenoptions.com/2007/10/31/building-the-solar-industry-wafer-by-wafer/ http://shirleysilukgregory.greenoptions.com/2007/10/31/building-the-solar-industry-wafer-by-wafer/#comments Wed, 31 Oct 2007 13:14:17 +0000 Shirley Siluk Gregory http://shirleysilukgregory.greenoptions.com/2007/10/31/building-the-solar-industry-wafer-by-wafer/ The demand for solar energy is expanding rapidly, but one of the industry’s obstacles to even faster growth has always been the difficulty of getting enough silicon to make photovoltaic cells for solar panels.

This week, though, IBM announced a new potential source for much-needed silicon: waste silicon wafers used to make semiconductor chips for computers, mobile phones and other electronic devices. By erasing the layers of intellectual property that previously prevented those chips from being sold for other uses, IBM can now sell its scrap silicon wafers directly to companies that manufacture solar panels.

IBM and other companies in the industry use silicon wafers to imprint the patterns on semiconductor chips. Once scrapped, these product silicon wafers have typically been crushed and sent to landfills, or melted down for resale. That’s because the proprietary information encoded on the wafers has prevented them from being resold.

Using a process developed by engineer Eric White, though, IBM has found a way to erase the intellectual property from wafers so they can be reused or resold. IBM has introduced the process to turn old product wafers into monitor wafers to help manage the chip-manufacturing process. Wafers of either kind that reach the end of their lives can now be marketed to solar cell makers rather than being trashed.

IBM says up to 3.3 percent of the new silicon wafers made in the industry each day are currently scrapped. While that might not sound like much, when you consider that, worldwide, semiconductor manufacturers create 250,000 new wafers per day, the numbers start adding up. Using stats from the Semiconductor Industry Association, IBM estimates that could mean annual waste of up to three million silicon wafers — enough, according to IBM, to cover an area of 22.5 acres, or to provide solar power to 6,000 homes.

IBM says the new reclamation process helped it save more than a half-million dollars at its Burlingont, Vermont, facility last year; it expects to save nearly $1.5 million this year. It says it’s also getting ready to use the process at its plant in East Fishkill, New York, and will provide working details to others in the semiconductor-making industry.

ReneSola, one of China’s fastest-growing solar energy companies, has already begun to use the reclaimed silicon wafers to make its solar panels. And the IBM process recently won the National Pollution Prevention Roundtable’s "2007 Most Valuable Pollution Prevention Award."

Pretty big props for something that starts out so small.

]]> http://shirleysilukgregory.greenoptions.com/2007/10/31/building-the-solar-industry-wafer-by-wafer/feed/ http://shirleysilukgregory.greenoptions.com/2007/10/16/all-the-energy-we-could-ever-need-space-based-solar-power-looking-better/ http://shirleysilukgregory.greenoptions.com/2007/10/16/all-the-energy-we-could-ever-need-space-based-solar-power-looking-better/#comments Tue, 16 Oct 2007 13:51:15 +0000 Shirley Siluk Gregory http://shirleysilukgregory.greenoptions.com/2007/10/16/all-the-energy-we-could-ever-need-space-based-solar-power-looking-better/ The good news? Beaming all the solar energy we could ever need down to Earth from space appears more feasible than ever before. The bad news? It’s going to take a lot of money and political will to get there.

While the idea of sending giant solar panels into orbit around the Earth is nothing new — the idea has been kicked around with varying degrees of seriousness since the ’60s and 70s — changing times have made the concept a lot more feasible today, according to a study released Oct. 10 by the National Security Space Office (NSSO). Fossil fuels are a lot more expensive, and getting harder to access, than they were in past decades. And technology advances are making possible today projects that were all but inconceivable in years past.

"The magnitude of the looming energy and environmental problems is significant enough to warrant consideration of all options, to include revisiting a concept called Space-Based Solar Power (SBSP) first invented in the United States almost 40 years ago," the report’s executive summary states.

Oil prices have jumped from $15/barrel to now $80/barrel in less than a decade. In addition to the emergence of global concerns over climate change, American and allied energy source security is now under threat from actors that seek to destabilize or control global energy markets as well as increased energy demand competition by emerging global economies.

By collecting solar energy before it passes through the Earth’s atmosphere, losing much of its power, a space-based solar power could provide the planet with all the energy it needs and then some, the NSSO report said. The output of a single one-kilometer-wide band of solar panels at geosynchronous orbit would equal the energy in all the world’s remaining recoverable oil: an esimated 1.28 trillion barrels.

Because it didn’t have the time or funds to study the feasibility of space-based solar power the traditional way, the NSSO’s Advanced Concepts Office (known as "Dreamworks") developed its report through a unique strategy: an open-source, Internet-based forum inviting worldwide experts in the field to collaborate online. More than 170 contributors joined into the discussion, with the mission to answer one question:

Can the United States and partners enable the development and deployment of a space-based solar power system within the first half of the 21st Century such that if constructed could provide affordable, clean, safe, reliable, sustainable, and expandable energy for its consumers?

Their answer, delivered in the form of the Oct. 10 report: it’s possible, but a lot remains to be done.

The study group ended up making four major recommendations. First, it said, the U.S. government should move to resolve the remaining unknowns regarding space-based solar power and act effectively to allow for the technology’s development. Second, the government should also reduce as much as possible the technical risks faced by businesses working on the technology. Third, the government should set up the environment — policy, regulatory and legal — needed to develop space-based solar power. And, fourth, the U.S. should commit to becoming an early demonstrator, adopter and customer of space-based solar power and set up incentives for the technology’s development.

"Considering the development timescales that are involved, and the exponential growth of population and resource pressures within that same strategic period, it is imperative that this work for ‘drilling up’ vs. drilling down for energy security begins immediately," the NSSO report stated.

If it could be done, space-based solar power would have incredible potential, the NSSO said: It could solve our energy problems, deliver "energy on demand" for troops in the field, provide a fast and sustainable source of energy during humanitarian disasters, and reduce the risk of future conflict over dwindling or risky energy supplies.

Considering that, over the past 30 years, both NASA and the Department of Energy have invested a meager $80 million in space-based solar power research (compared to $21 billion over the last half-century for nuclear fusion — which still remains out of reach as a feasible power source), maybe it’s time to directing our research energies — and dollars — upward.

]]> http://shirleysilukgregory.greenoptions.com/2007/10/16/all-the-energy-we-could-ever-need-space-based-solar-power-looking-better/feed/ http://maxlindberg.greenoptions.com/2007/07/04/greening-the-golden-years-solar-get-it-now/ http://maxlindberg.greenoptions.com/2007/07/04/greening-the-golden-years-solar-get-it-now/#comments Wed, 04 Jul 2007 21:05:38 +0000 Max Lindberg http://maxlindberg.greenoptions.com/2007/07/04/greening-the-golden-years-solar-get-it-now/ 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 it’s coming to the forefront once again. Gary serves on the board of directors of several non-profit organizations including a non profit solar industry trade association, the California Solar Energy Industries Association (CALSEIA). He is also a mamber of ADPSR (Architects, Designers, Planners for Social Responsibility).

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