The hidden cost of solar and wind energy
...They are both overrated, but I think solar is the most overrated at this point. Neither is competitive without the subsidies from governments. They just are not the answer for replacing fossil fuels and the greenies have not come up with any of Obama's magic energy sources that will create "green jobs."
Because of this need for full fossil fuel backup, the public will pay a large premium for solar and wind -- paying once for the solar and wind system (made financially feasible through substantial subsidies) and again for the fossil fuel system, which must be kept running at a low level at all times to be able to quickly ramp up in cases of sudden declines in sunshine and wind. Thus, the total cost of such a system includes the cost of the solar and wind machines, their subsidies, and the cost of the full backup power system running in "spinning reserve."Finally, since solar and wind conditions are most favorable in the Southwest and the center of the country, costly transmission lines will be needed to move that lower-cost solar and wind energy to population centers on the coasts. There must be considerable redundancy in those new transmission lines to guard against damage due to natural disasters and terrorism, leading to considerable additional costs.
The climate change benefits that accrue from solar and wind power with 100 percent fossil fuel backup are associated with the fossil fuels not used at the standby power plants. Because solar and wind have the capacity to deliver only 30 to 40 percent of their full power ratings in even the best locations, they provide a carbon dioxide reduction of less than 30 to 40 percent, considering the fossil fuels needed for the "spinning reserve." That's far less than the 100 percent that many people believe, and it all comes with a high cost premium.
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