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Green Light for New Concentrating Solar Power Project

Published: September 23, 2005

Boulder City, Nevada [RenewableEnergyAccess.com] Solargenix Energy is traditionally known for its residential solar thermal hot water systems. Soon, however, the company will be known for something much bigger after recently getting the green light to proceed on the first large-scale solar power plant in the US in well over a decade.

"Many people are not familiar with concentrating solar thermal technology and its proven track record and capability to play a significant role in addressing many of the most important energy issues that confront America and the rest of the world."

-- John Myles, Solargenix CEO
Approvals were handed down from Nevada's Public Utility Commission regarding amendments to commercial Power Purchase Agreements with Nevada Power Company and Sierra Pacific Power Company. This approval by the PUCN will allow Solargenix to complete the development of Nevada Solar One, a 64 MW Solar Thermal Electric Generating Plant located in Boulder City, Nevada.

Nevada Solar One will be among the largest solar electric power plants to be built globally in the past 14 years and it will be the third largest solar power plant in the world. This project will make Nevada one of the largest generators of solar energy in the US.

The project will deploy parabolic solar trough technology -- essentially huge long tracks of mirrored half-tubes that track, receive and concentrate the sun's energy on series of tubes filled with a heat-transfer fluid. The heat transfer fluid passes through the receiver tubing and is heated to temperatures required to generate steam and drive a conventional Rankine cycle steam power plant to generate electricity that is then fed into the electrical grid system.

"Many people are not familiar with concentrating solar thermal technology and its proven track record and capability to play a significant role in addressing many of the most important energy issues that confront America and the rest of the world," said Solargenix CEO John Myles.

According to published information from the US Department of Energy through the US National Laboratories (which is available on the Solargenix website) the parabolic trough technology used in this plant represents one of the major renewable energy success stories of the past two decades and has a near-term potential to compete directly with conventional fossil fuel powered technologies. A series of similar plants built in California's Mojave Desert back in the early '80s are still functioning at or above expected capacity today.

The recently passed federal energy policy package played a part in improving the economics of this project. The bill included a 10 percent investment tax credit. This credit is particularly helpful for promoting new developments of these CSP projects.

The US Department of Energy has issued a report that identifies suitable land and solar resources in Nevada that could produce over 600,000 MW of power generation using concentrating solar technologies. Currently, Nevada's electricity consumption is less than 3 percent of this resource capacity. This same report claims that the economic benefits far exceed the cost to develop this clean renewable energy source.

"The western states represent the quintessential place for practical utilization of large-scale solar power generation that the 65 MW Solargenix facility will profide," said Scott Sklar, President, The Stella Group, Ltd., a clean energy facilitation firm.

The Boulder City plant located in the El Dorado Valley is scheduled to begin production of electricity in early 2007. Myles said that critical major equipment and components have been ordered, land agreements are completed with Boulder City and interim financing is in place.
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1 of 12
September 23, 2005
I think it is a great idea! Nevada uses an obscene amount of hydro-electricity in their casinos; its about time the state shouldered part of the load in producing electricity! The whole state is ugly high desert, of little use to anyone except for gathering solar power.
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2 of 12
September 24, 2005
I also noted the time scale of events mentioned. It seems to me that, as reference the basic design, not much changes. Parabolic is still spelled the same.
I wonder where the drawing board will take us this time? During the lull in just about everything since 1980, plenty of time for R&D has passed by. New materials are available to lighten the entire assembly.
I also wander if, by accepting the Goverment money, the lands that these plants are built on have a special despensation. Could a city designer use a plant like this as a roof for the entire city?
Just a few crumbs for thought...
russell2130
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3 of 12
September 24, 2005
I visited the California's Mojave Desert parabolic solar trough technology in 1985 and thought it was a good idea at that time. It took another 20 years before being developed any further. At this rate, we will have to wait until 2025 for the next big project. Will it be too late?

It would be good if more proven solar development would take less time to implement, especially when people are now beginning to realize that oil is neither cheap nor the answer to our energy problems.

adrianakau@aol.com
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4 of 12
September 28, 2005
OK,I am delighted about the new solar enrgy plant in Boulder NV. But eventually I fear that some environmentalist will start griping about "changing the ecology of the desert." But there is another resource we are not even contemplating: What if every new home built, especially in desert areas, was MANDATED to have pvc solar power panels on every new roof? Eventually, we could have PV cells on every south and western-facing home in America. No despoiling the environment in the desert, and many thousands of acres of roof tops to make huge solar collectors out of each state. WE would be able, when we produced more energy than the house is using, to sell it back to the energy companies. Would they lose money?
NO! Now they have more energy to sell to industry!
The thing we need to notice is that China is adding 2,000 cars a day to their streets, in Beijing alone! They are now directly competing with us for oil and gas. It WILL drive up the price!
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5 of 12
September 28, 2005
Ultimately, while I agree that new solar energy solutions are necessary, I fear that if we build TOO
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6 of 12
September 28, 2005
This, combined with decreasing natural gas prices (these prices were linked to the price of solar electricity) and probably a lot of other factors, Luz being the only company that had done this before, brought the bankruptcy and demise of Luz. It took a while for the favorable policies and for companies and researchers to redevelop even better trough technologies.... and Solargenix and a few others are finally here. I see great potential for this technology in the southwest U.S.

Russ, to answer to your dream of trough-topped cities. Solar concentrating technologies work best in the desert where there are huge amounts of cheap, unused land, and where their is little water vapor and particular matter in the air to interfere with the direction of solar radiation. And they have to be large scale to be cost effective, meaning a few square miles at least.
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7 of 12
September 28, 2005
I spent this past summer helping Solargenix develop this technology, as part of an internship with the National Renewable Energy Lab (NREL).

As far as I understand, the time lag between the building of the last solar plant in 1990 and this one had a lot to do with short-sighted energy policies. Luz International developed and built all 9 of the existing (and still funcioning) plants in California. California had been implementing solar tax credit that were valid for only 2 years, and Luz rushed to finish the installation of their last plant in order to make use of the tax credits... (continued in next post)
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8 of 12
September 29, 2005
Congratulations to Solargenix on this bold step. I look forward to seeing further announcements concerning the supply of the collectors and other equipment as well as the system configuration, financial closure,etc.
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9 of 12
September 29, 2005
I think that the fluid used will continue to absorb solar radiation energy as long as it is passing the focal point, which means if you hook these up in series there is the possibility of having a very large temperature difference at the heat exchanger. This I think will allow the use of steam turbines that work under high pressure and produce power from units similar to conventional steam turbognerator plants, rather than using a low temperature differential and outsized steam equipment. All this keeps the cost more reasonable, although I think the higher the temperature the lower the overall thermal efficiency.

Needless to say I think this idea is great. I assume the tracking is in elevation only?
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10 of 12
September 29, 2005
Because the heated fluid is hotter than that of steam
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11 of 12
September 29, 2005
It's great that they can store heat energy on through the night!
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12 of 12
September 30, 2005
A wonderful source of electricity to produce Hydrogen. Any excess power that isn't needed on the grid can be stored as hydrogen and then be put on the grid when the solar system is not producing. When the Hydrogen Economy gets going then this plant will be able to supply much needed renewable energy. See hydrogennow.org and solar today.org.
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