The Independent Assessment of Nuclear Developments in the World

Home > WNISR Essential News > Sweden Retires First Commercial Nuclear Reactor (Oskarshamn-1)

Sweden Retires First Commercial Nuclear Reactor (Oskarshamn-1)

Wednesday 21 June 2017

Sweden Retires First Commercial Nuclear Reactor (Oskarshamn-1)

World Nuclear Industry Status Report (WNISR), 20 June 2017

On 17 June 2017, the oldest Swedish nuclear reactor Oskarshamn-1 (O1) generated its last kilowatthour. After an "operational disturbance" that led to an automatic shutdown, operator-owner OKG decided on 19 June 2017 to keep the unit off-line. In 2015, the owner scheduled the reactor to close on 29 June 2017 and with only ten days left to go, OKG decided, it was not worthwhile to repair and restart the almost 46-year-old plant.

Construction of Sweden’s first commercial nuclear power plant started on 1 August 1966 and grid connection was carried out on 19 August 1971. The 440 MW Boiling Water Reactor (BWR) generated a total of 110 TWh over its lifetime.

The shutdown of O1 leaves eight reactors operating in Sweden, one at Oskarshamn (O3), four at Ringhals and three at Forsmark. Ringhals-2 is scheduled to shut down in 2019, with Ringhals-1 to follow in 2020.

With the recent closure of South Korea’s oldest unit, WNISR considers a total of 407 reactors currently operating in the world, while 34 units are in Long-Term Outage (LTO).

What They Say…

“The Report sets forth in painstaking detail the actual experience and achievements of nuclear energy around the world.”

Peter A. Bradford

Former commissioner
U.S. Nuclear Regulatory Commission (NRC)
(in his foreword to the 2013 report)
“A vital public service... Uniquely independent, thorough, and timely assessment."

Amory B. Lovins

Chairman, Rocky Mountain Institute
“This annual publication has over 20 years evolved into the most reliable, strikingly original, comprehensive and penetrating assessment of the global nuclear industry.”

Praful Bidwai

Financial Chronicle
Delhi, India
"Amid the hype and PR, the smoke and mirrors, of the 'nuclear renaissance', the Status Report offers a hard-edged reality check."

Walt Patterson

Associate Fellow Chatham House
London, UK
“Fantastic piece of work. Must reading for any observer of nuclear energy."

Henri Sokolski

Executive Director Nonproliferation Policy Education Center
Washington DC, USA
“Reliable research based on cold, hard facts, unlike the hype and amnesia of industry sources.”

Scott Ludlam

“Félicitations pour la dernière édition du WNISR. Formidable comme d'habitude!”

Fulcieri Maltini

International Consultant Former Director of the Nuclear Safety Account, EBRD
“Thought-provoking as usual.”

Will Dalrymple

Editor Nuclear Engineering International
"The authoritative report on the status of nuclear power plants worldwide is the World Nuclear Industry Status Report."


Bangkok, Thailand
“Such an illuminating report.”

Sam Geall

Deputy Editor China Dialogue
London, UK
"An astounding collection of facts and figures, a myth-busting international overview… An eye-opening piece of work!"

R. Andreas Krämer

Chairman Ecologic Institute
Berlin, Germany
“I really appreciate you letting us excerpt your report! It’s incredibly well researched and comprehensive, so thank you!”

Stuart Luman

Associate Editor Bulletin of the Atomic Scientists