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List of canceled nuclear plants in the United States ：ウィキペディア英語版

List of canceled nuclear plants in the United States
This is a list of canceled nuclear plants in the United States.
==History==
The late 1960s and early 1970s saw a rapid growth in the development of nuclear power in the United States. By 1976, however, many nuclear plant proposals were no longer viable due to a slower rate of growth in electricity demand, significant cost and time overruns, and more complex regulatory requirements. Also, there was considerable public opposition to nuclear power in the USA by this time, which contributed to delays in licensing planned nuclear power stations, and further increased costs.〔(Nuclear power: Futures, Costs, and Benefits ) p. 16.〕
By the end of the 1970s it became clear that nuclear power would not grow nearly as dramatically as once believed. This was particularly galvanized by the Three Mile Island accident in 1979. Eventually, more than 120 reactor orders were ultimately canceled〔(Nuclear Power: Outlook for New U.S. Reactors ) p. 3.〕 and the construction of new reactors ground to a halt. Al Gore has commented on the historical record and reliability of nuclear power in the United States:

Of the 253 nuclear power reactors originally ordered in the United States from 1953 to 2008, 48 percent were canceled, 11 percent were prematurely shut down, 14 percent experienced at least a one-year-or-more outage, and 27 percent are operating without having a year-plus outage. Thus, only about one fourth of those ordered, or about half of those completed, are still operating and have proved relatively reliable.〔Al Gore (2009). ''Our Choice'', Bloomsbury, p. 157.〕

A cover story in the February 11, 1985, issue of ''Forbes magazine'' commented on the overall management of the nuclear power program in the United States:

The failure of the U.S. nuclear power program ranks as the largest managerial disaster in business history, a disaster on a monumental scale … only the blind, or the biased, can now think that the money has been well spent. It is a defeat for the U.S. consumer and for the competitiveness of U.S. industry, for the utilities that undertook the program and for the private enterprise system that made it possible.〔"Nuclear Follies", a February 11, 1985 cover story in ''Forbes magazine''.〕

During the 2000s, aging infrastructure, growing power use and fears of global climate change all prompted what was then called the "nuclear renaissance". Engineering companies noted that the commissioning process was a major barrier to further construction, and changes to the system were carried out by the US Nuclear Regulatory Commission as part of the Energy Policy Act of 2005, along with new tax incentives and loan guarantees. As many as 30 new reactors were planned by 2009.〔J. Matthew Roney, ("US Nuclear Power In Decline" ), Earth Policy Institute, 10 September 2013〕
, only five new reactors are under construction, two at Vogtle, two at Summer, and one at Watts Bar. All of these projects have announced delays and budget overruns. All of the other new builds and the equally extensive list of upgrades to existing reactors have been shelved. The majority of this change in fortunes is due to the rapidly falling prices of natural gas.〔

抄文引用元・出典: フリー百科事典『ウィキペディア（Wikipedia）』
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