Kudos to the DOE for recognizing an opportunity to help drive down the cost of renewable energy.
Monday, May 17, 2010
DOE Funds to Stretch Concentrated Solar Power Through Salt Storage
Glad to see the Department of Energy (DOE) is investing $62 million in salt storage. It is cheaper and easier to store energy as heat than electricity. The way concentrated solar thermal power essentially works is that the sun's rays are focused on a tube of liquid, the liquid heats up to steam, and the steam turns a turbine which creates electricity. Once the sun stops shining the heat starts to dissipate and the process starts all over again in the morning. Well, instead of letting that heat dissipate into the atmosphere in the evening what if you could store it in something like salt? If you store the heat you can use it again in the morning so the concentrated solar power (CSP) panels don't have to work as hard to heat up the liquid to steam. Storing the excess heat will also allow a large-scale CSP plant to run for many more hours after the sun goes down. Doing this causes the economics of a CSP plant to start looking better and better!
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Wishful Thinking
*Before adding PV, wind, or solar thermal to your residential or commercial structure, the first step is to analyze this structure's energy consumption through a professional energy audit. I'd like to see some public education on the importance of an energy audit for any structure. Remember Smokey the Bear's forest fire shtick drilled into our heads over the last few decades? How about something like, "Henry the House" desperately wanting to know how much energy he consumes and wastes throughout the day?
*With over 300 sunny days a year on the Front Range is it too much to ask for solar PV and thermal modules on every residential and commercial unit (after an energy audit of course)?
*How about affordable plug-in electric cars that go more than 100 miles on a charge with PV and wind powered recharging stations?
*Dreaming of companies large and small adopting business sustainability practices to maximize profits, reduce their carbon footprint, and enhance the lives of their employees and the communities that surround them.
*With over 300 sunny days a year on the Front Range is it too much to ask for solar PV and thermal modules on every residential and commercial unit (after an energy audit of course)?
*How about affordable plug-in electric cars that go more than 100 miles on a charge with PV and wind powered recharging stations?
*Dreaming of companies large and small adopting business sustainability practices to maximize profits, reduce their carbon footprint, and enhance the lives of their employees and the communities that surround them.
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