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Retech 2009

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The Environmental Impact of Ground-Mounted Solar Systems Considering installation and end-of-system-life implications
“Solar power has virtually no environmental impact.” Now that’s a statement everyone can agree on. However, things in life are rarely that simple. Take for instance Ausra, Inc. a developer of utility-scale solar thermal power plants, and its plans for a $500 million solar thermal plant in Carrizo Plain, California.
 
Gasification Technology: Thermal Utilization of Calorific Waste
Contrary to certain views, waste plays a paradoxal role in our lives and is unavoidable. Even the most efficient and well-managed waste management system remains widely unnoticed in the communities it serves.
 
Industrial Facilities Embrace Renewable Energy in Form of Onsite Biomass
A long-established paper mill operating in the state of Mississippi has found a new use for the natural resource on which its business depends. In December 2007, the Wiggins, Mississippi operation began converting wood residue to natural gas as a primary source of energy fueling its operations.
 
Brief Anatomy of a Geothermal Power Purchase Agreement
A geothermal resource differs from other energy sources in that it is both renewable and reliable. When it comes to a geothermal power purchase agreement (PPA), certain basic features exist. For starters, a seller is usually the project developer;
 
Intelligent Power Conversion:
How the next generation of inverters will change the future of renewable energy production and distribution
The next generation of commercial and utility scale solar inverters will be the core enabling technologies for the growth of large scale distributed energy systems.
 
On Renewable Energy Technologies
A majority of renewable energy technologies are directly or indirectly powered by the sun. The earth-atmosphere system is in equilibrium such that heat radiation into space is equal to incoming solar radiation, and the resulting level of energy can be described as earth’s “climate.”
 
Tide of Optimism for New Energy Source
The world’s first commercial-scale tidal energy system has been successfully installed in fast flowing waters on the east coast of Northern Ireland. SeaGen, as it is known, is a gigantic device that is made up of two 0.6 megawatt (MW) turbines mounted by cross beam on a slender tower.
 
Paying for Wind
When considering wind energy, lenders and investors tend to question if financing a wind project is in line with regular expectations and customs, or what adaptations need to be made to accommodate the particulars of such a project. Some of these particulars require a closer looks, especially in the US where growth rates have heightened in recent years.
 
Electrode with integrated shading protection answer to challenges of UMG PV cells
Day4 Energy Inc. announced in August that it has successfully developed and tested a proprietary PV module technology specifically designed for application with solar cells based on Upgraded Metallurgical Grade (UMG) silicon material. According to the company, once commercialized, UMG silicon technologies are widely believed to become a viable source of low cost alternative silicon material for the solar industry. 
 
Western States Lead the World in Geothermal Electricity
Production Geothermal hot spots paving the way for US to become energy independent. 
 
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