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![]() "Dan" wrote: There are enough coal and oil shale reserves in the US alone to provide internal demand needs for 150-500 years But they have serious environmental downsides, both in extraction and burning. Solar energy may be harvested in several ways http://en.wikipedia.org/wiki/Solar_updraft_tower . Wind power harvest is experiencing rapid growth in the U. S., showing potential to be a serious contributor to the national grid, increasinig ten-fold in ten years: ================= In recent years, the United States has added more wind energy to its grid than any other country; U.S. wind power capacity grew by 45% to 16.8 gigawatts in 2007.[34] Texas has become the largest wind energy producing state, surpassing California. In 2007, the state expects to add 2 gigawatts to its existing capacity of approximately 4.5 gigawatts. Iowa and Minnesota are expected to each produce 1 gigawatt by late-2007.[35] Wind power generation in the U.S. was up 31.8% in February, 2007 from February, 2006.[36] The average output of one megawatt of wind power is equivalent to the average electricity consumption of about 250 American households. According to the American Wind Energy Association, wind will generate enough electricity in 2008 to power just over 1% (4.5 million households) of total electricity in U.S., up from less than 0.1% in 1999. U.S. Department of Energy studies have concluded wind harvested in just three of the fifty U.S. states could provide enough electricity to power the entire nation, and that offshore wind farms could do the same job.[37] -Wikipedia http://en.wikipedia.org/wiki/Wind_power ================= These technologies need not be expected to replace fossil fuel power suddenly. They can make incremental contributions, being integrated into the power infrastructure as they come on line. That is happening now. Additionally, they can be used to power desalination plants and even plants to manufacture fuel directly from CO2 or hydrogen from water, thus removing their chief drawbacks as power grid suppliers, their variable output. http://www.technologyreview.com/read...&id=1 8582&a= http://www.unsw.edu.au/news/pad/arti..._hydrogen.html Alternative energy technologies are still being sorted out, but expensive oil is giving them momentum that wasn't there ten years ago. This stuff will work if we commit to it. We don't have to keep taking all the **** we have over oil, throwing our economy down a rathole in the process. All it takes is some leadership and guts to stop it. |
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