Phydeaux -> RE: Germany's power grid destabilizing (9/10/2013 4:01:06 PM)
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ORIGINAL: thompsonx quote:
ORIGINAL: freedomdwarf1 This is part of the main argument about renewables - they aren't stable and thus form peaks and troughs in the supply. Has no one ever heard of pumping water into a tank,weights on a pully or rail cars loaded with lead and moved to a higher elevation to be used as power by gravity when the prime source of power was not available? quote:
Not only that, the initial outlay to kick-start any renewable project is mega-expensive. As opposed to the cost of a similar sized conventional plant???any documenation for that or is that your "unbiased" opinion unsubstantiated by fact? quote:
That burden has to be paid for by the people in rising energy costs So far no validation that there will be cost increases based on this. quote:
that won't bring much real cost benefit until maybe decades later and many may not live to see those benefits. By this reasoning canned food should not exist. Thompson, your comments once again are.. staggering. Technical education really ought to be required. Pumping water uphill has, indeed, been done many, many times. Luddington is one of the better examples of the technology, and has around 1800MW capacity. Personally, I am greatly fond of this kind of technology - but it has issues. a). Not every power plant can be situated next to a lake thats uphill, and over a square mile in size. Lack of water (much of the southwest), lack of inclines (south florida), prohibitive land values (cities) .. etc. b). As per the laws of thermodynamics, 1 watt pushed up the lake translates into about .75 watts coming down the lake. This inefficiency makes the electricy more expensive. c). It doesn't work well with solar power. Typically, water is pumped up the hill at night, which is the time of lower demand. Unfortunately, the sun doesn't shine at night. d). The capital costs are huge; the siting demands rigorous. Tanks are worse, having a much higher unit cost. As for the costs of power plants the costs for coal, hydro, combined cycle were all presented previously. These were costs per kW/hr, provided by the US DoE, as well as the more accurate ones presented by the Aussie govt. I'm not providing them again. If you dispute the obvious fact that building and maintaining hydropumping / generation station is expensive - you provide the links.
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