Word: costing
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Dates: during 1970-1979
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...from new and existing U.S. dams that have been allowed to fall into disuse, enough to power 100 cities the size of Washington. By some estimates, if all the hydro sites now under study could be repaired, they would yield the energy output of 16 nuclear plants for the cost of only 2% new nuclear plants...
Sandia Labs is experimenting in Albuquerque with a vertical-axis wind-turbine design that looks like a weird eggbeater. Like all windmills, it suffers commercially from having intermittent power output, but the small estimated cost of no more than 50 per kw-h can make it an attractive alternative, especially in inaccessible and rural areas, where power is costly...
...drive a turbine, and then draw up cold water through long pipes to recool the gas into liquid. Tested as early as the 1930s, the idea has been shown to work, but it has never been very economical. A 10,000-Mw complex, enough for 6.6 million people, would cost $25 billion...
...assemble. (According to one federal study, an existing building can operate for 16 years on the amount of energy it takes to build the structure from scratch.) Also, in most instances, though by no means all, a staunch old building can be converted for modern usage at less cost than equivalent new construction...
...cultural center, in large part through the efforts of Mrs. Richard Daley, widow of the mayor. Though its vast mosaic-lined entrance halls and twin marble staircases leave little room for a functional library, the interior has been restored in all its original quattrocento palazzo splendor at a cost of $12 million. Architect Gerrard Pook of the 99-year-old firm of Holabird & Root points out that a new central library with the necessary 300,000 sq. ft. could have been built for the same price, but many Chicagoans feel that the A.I.A. award-winning restoration is at least partial...