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United States
Abandoned Constructions
42
Under Construction
0
Operating
94
Closed
41
Number of Reactors
(as of August 2026)
44.8
Mean Age of Reactor Fleet
(as of August 2026)
17.3%
Stable
Nuclear Share in Electricity Production
(2025)
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WNISR
in the Media –
Mycle Schneider,
25 March 2021
Kyodo News (Japan)
OPINION
: Nuclear power has become irrelevant — like it or not
File photo taken on Feb. 14, 2021, shows tanks storing treated water containing radioactive tritium on the premises of the crippled Fukushima Daiichi power plant about 10 years after the nuclear crisis. (Kyodo) By Mycle Schneider Published 16 March 2020
PARIS
– Ten years went by since the Fukushima Daiichi accident began. What happened in the United States, historically leading the world’s nuclear power programs and still operating the largest reactor fleet in the world? What are (…)
WNISR
in the Media –
23 March 2021
Wall Street Journal (U.S.)
Nuclear Power’s Prospects Cool a Decade After Fukushima Meltdowns
Disaster at the Japanese reactors marked a turning point for an industry that once promised to give the world a nearly unlimited source of energy By Peter Landers Published 3 March 2021
OMAEZAKI
, Japan—At a seaside nuclear-power plant here, a concrete wall stretching a mile along the coast and towering 73 feet above sea level offers protection against almost any conceivable tsunami. Two reactors are ready to start splitting atoms again to heat water into steam and generate power, the (…)
WNISR
Essential News –
26 August 2020
WNISR
Storm Damage Prompts Early Closure of Duane Arnold Nuclear Reactor in the
U.S.
WNISR
, 26 August 2020 As a result of storm damage incurred on 10 August 2020, the 622
MW
Duane Arnold-1 reactor will not return to service and will instead be permanently closed, the plant’s majority owner, NextEra Energy Resources announced 25 August 2020. It was previously scheduled for closure on 30 October 2020. This is the second reactor closure in the
U.S.
and the fourth in the world since the beginning of 2020, with Indian Point-2 shuttered in the
U.S.
and Fessenheim-1 and -2 in (…)
WNISR
Essential News –
30 April 2020
Closure of 47-Year-Old Indian Point Reactor Near New York City
Closure of 47-Year-Old Indian Point Reactor Near New York City
WNISR
, 30 April 2020 Indian Point Nuclear Power Plant - New York - Photo Entergy Just short of 47 years after commencing operations, the Indian Point Unit 2 reactor is closing today, 30 April 2020. Located on the Hudson River, 48 km from Manhattan, New York, the
PWR
was taken off the grid under the terms of an unusual 9 January 2017 agreement between the nuclear plant owner Entergy, non-governmental organization Riverkeeper (…)
WNISR
Essential News –
8 December 2019
US
Reactors Threatened by Sea-Level Rise Granted 80-Year Operating License
WNISR
, 8 December 2019 For the first time in the history of nuclear power, the
U.S.
Nuclear Regulatory Commission (
NRC
) on 4 December 2019 granted two commercial nuclear reactors, Turkey Point units 3&4, a second 20-year license extension permitting them to operate until they are 80 years old. The Turkey Point reactors, located 30 km south of Miami, Florida, and operated by Florida Power & Light (
FPL
), were connected to the grid on 2 November 1972 and 21 June 1973 respectively (…)
WNISR
Essential News –
24 September 2019
Three Mile Island-1 Closed at Age 45
WNISR
, 22 September 2019 The Three Mile Island (
TMI
) Unit 1 was closed on 20 September 2019, the plant owner Exelon Corp. announced. The 45-year old 819
MW
Pressurized Water Reactor (
PWR
), located near Middletown in Pennsylvania was connected to the grid on 19 June 1974. The closure brought to an end nuclear generation at the site where Unit 2 in 1979 suffered a partial core-melt accident. “Today we celebrate the proud legacy of
TMI
Unit 1 and the thousands of employees who shared our (…)
WNISR
Essential News –
4 June 2019
U.S.
Pilgrim Nuclear Reactor Closes... 13 Years Before License Expires
WNISR
, 4 June 2019 On 31 May 2019, Entergy permanently shut down its 668
MW
Pilgrim reactor, which was connected to the grid the first time on 19 July 1972. The 47-year old General Electric
MK1
Boiling Water Reactor (
BWR
), located on Cape Cod Bay in Massachusetts, was described by the
NRC
in 1986 as ’’one of the worst-run’’ nuclear plants in the country. Nearly twenty years later little had apparently changed, with Senator Ed Markey describing the plant has having “one of the worst safety (…)
WNISR
Essential News –
20 September 2018
Oldest
US
Reactor, Oyster Creek, Closed at Age 49
Oldest
US
Reactor, Oyster Creek, Closed at Age 49
WNISR
, 20 September 2018 The Exelon Generation Company announced 17 September 2018 that it had taken the 49-year old Oyster Creek reactor off line for the last time. The shutdown of the first commercial General Electric
MK1
Boiling Water Reactor (
BWR
), which began operation in 1969 and is located in Ocean County, New Jersey, marked the closure of the oldest reactor in the
U.S.
fleet. Exelon remains the largest single operator of nuclear (…)
The Annual Reports –
4 September 2018
Nuclear Power: Strategic Asset, Liability or Increasingly Irrelevant?
The World Nuclear Industry Status Report 2018 Released
Paris, London, 4 September 2018. Nuclear power plants added a total of 7-gigawatt (
GW
) capacity to the world’s electricity grids in 2017 and the first half of 2018, a tiny fraction of the total from all sources, which is estimated at some 257
GW
(net) in 2017, including 157
GW
of renewable capacity (the largest increase ever). Over that 18-month period, six reactors started up in China, two in Russia and one in Pakistan. For the third year in a row, excluding China, global nuclear power generation has declined, finds the World Nuclear Industry Status Report 2018 (
WNISR2018
).
WNISR
Essential News –
2 August 2017
Utilities Abandon
V. C.
Summer
AP1000
Reactor Construction Following Westinghouse Bankruptcy
Utilities Abandon
V. C.
Summer
AP1000
Reactor Construction Following Westinghouse Bankruptcy
WNISR
, 1 August 2017 On 31 July 2017, Santee Cooper (formally, the South Carolina Public Service Authority) and
SCANA
Corporation announced that they were halting construction of the
V. C.
Summer project in Jenkinsville, South Carolina. The two entities hold 45 percent and 55 percent stakes of the project respectively. The following day, on 1 August 2017,
SCANA
executives briefed the state’s (…)
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