Solar proponents love to boast that just a few hundred square kilometers' worth of photovoltaic solar panels installed in Southwestern deserts could power the United States.
Their schemes come with a caveat, of course: without backup power plants or expensive investments in giant batteries, flywheels, or other energy-storage systems, this solar-power supply would fluctuate wildly with each passing cloud (not to mention with the sun's daily rise and fall and seasonal ebbs and flows). Solar-power startup
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Ausra
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, based in Palo Alto, thinks it has the solution: solar-thermal-power plants that turn sunlight into steam and efficiently store heat for cloudy days.
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Inka Schmidt on 10 Feb 09In recent times, people are increasingly looking for energy solutions, whether is because of rising energy costs or environmental issues. Solar power for home has been a much promoted alternative, however still very few people have a solar power system in their houses. Why is it like that? The problem is that usually it is very expensive to purchase and have installed a solar power system.That is until now. Michael Harvey, who has been involved with renewable energy for over 15 years, wrote a simple and detailed guide that teaches you how to build a solar power system at your home for about $200. To know more
