Cost
The US National Renewable Energy Laboratory (NREL) has estimated that by 2020 electricity could be produced from power towers for 5.47 cents per kWh. Companies such as ESolar (backed by Google.org) are continuing development of cheap, low maintenance, mass producible heliostat components that will reduce costs in the near future. ESolar's design uses large numbers of small mirrors (1.14m²), which reduce costs for installing mounting systems such as concrete, steel, drilling & cranes.
Improvements in working fluid systems, such as moving from current two tank (hot/cold) designs to single tank thermocline systems with quartzite thermal fillers and oxygen blankets will improve material efficiency and reduce costs further.
Read more about this topic: Solar Power Tower
Famous quotes containing the word cost:
“The cost of a thing is the amount of what I will call life which is required to be exchanged for it, immediately or in the long run.”
—Henry David Thoreau (1817–1862)
“Each is under the most sacred obligation not to squander the material committed to him, not to sap his strength in folly and vice, and to see at the least that he delivers a product worthy the labor and cost which have been expended on him.”
—Anna Julia Cooper (1859–1964)
“How much would it cost you to stand at the wrong end of a shooting gallery?”
—S.J. Perelman, U.S. screenwriter, Bert Kalmar, Harry Ruby, and Norman Z. McLeod. Groucho Marx, Horsefeathers, Huxley College president to con artist Baravelli (Chico Marx)