Japan will need to replace as many as 14 of its nuclear reactors by the 2050s in order to meet its future energy demands, a recently released draft policy proposal states.

Commercial operations have resumed at Kashiwazaki Kariwa nuclear power plant in Japan’s Niigata Prefecture, Tokyo Electric Power Company has announced.

Last week’s commercial restart of Unit 6, a 1,315-MWe boiling water reactor, is the first for a TEPCO nuclear facility since the March 11, 2011, earthquake and tsunami triggered an accident at the utility’s Fukushima Daiichi nuclear plant.

Where do Japan and its nuclear energy ambitions stand 15 years after the devastating magnitude 9.0 earthquake of March 11, 2011, a destructive tsunami, and an accident at Fukushima Daiichi nuclear plant ground them to a halt?

A look at developments within the last year involving Japan’s political leadership, international relations, its fleet of nuclear plants, and the ongoing cleanup and decommissioning at Fukushima shows an island country pushing nuclear to the forefront of its energy plans.

Update: Operation of Unit 6 at Kashiwazaki Kariwa nuclear power plant in Japan’s Niigata Prefecture was suspended Thursday morning after its initial restart on the evening of Wednesday, January 21. According to TEPCO spokesperson Takashi Kobayashi, an alarm sounded “during reactor start-up procedures.” The cause is currently under investigation, but there is no danger inside or outside the plant. Plant chief Takeyuki Inagaki said at a news conference, “The equipment is essential to safe operation, and we will examine it inside-out.”

An International Atomic Energy Agency task force has confirmed that the discharge of treated water from Japan’s Fukushima Daiichi nuclear power plant is proceeding in line with international safety standards. The task force’s findings were published in the agency’s fourth report since Tokyo Electric Power Company began discharging Fukushima’s treated and diluted water in August 2023.

More information can be found on the IAEA’s Fukushima Daiichi ALPS Treated Water Discharge web page.

The International Atomic Energy Agency has announced that its experts have confirmed that the tritium concentration in the latest batch of water to be released from the Fukushima Daiichi nuclear power plant is far below Japan’s operational limit. Tokyo Electric Power Company (TEPCO) began discharging the treated and diluted water on March 12.

International Atomic Energy Agency director general Rafael Mariano Grossi visited Japan’s Fukushima Daiichi site on February 19, where he joined scientists from the Third Institute of Oceanography in China, the Korean Institute for Nuclear Safety in South Korea, and the Spiez Laboratory in Switzerland in collecting seawater samples from a boat near the damaged nuclear power plant.

It’s been less than two years since Germany shuttered its three remaining nuclear plants on April 15, 2023—the culmination of a decision reached during the backlash following the Fukushima Daiichi accident in Japan in 2011.

During some of his first public remarks last week, Japan’s new economy minister Yoji Muto promoted the importance of nuclear energy for his nation.

Muto said the new administration—including newly appointed prime minister Shigeru Ishiba—plans to restart “as many reactors as possible so long as they are safe,” reported NucNet, a nuclear-centered news agency in Brussels.

The International Atomic Energy Agency announced on Aug. 7 that its experts have confirmed that the tritium concentration in the latest batch of water to be released from the Fukushima Daiichi nuclear power plant is far below Japan’s operational limit. Tokyo Electric Power Company (TEPCO) began discharging the treated and diluted water that day.

An International Atomic Energy Agency task force has confirmed that the discharge of treated water from Japan's Fukushima Daiichi nuclear power plant is progressing in accordance with the plan approved by Japan’s Nuclear Regulation Authority.

International Atomic Energy Agency experts have confirmed that the tritium concentration in the fourth batch of treated water released from Japan’s Fukushima Daiichi nuclear power plant is far below the country’s operational limit.

Japanese regulators have ordered further review at a nuclear power plant in central Japan following a series of deadly earthquakes that rocked the country on New Year’s Day.

A series of earthquakes on New Year’s Day that resulted in a tsunami warning and prompted evacuations from Japan’s west coast caused no irregularities at the country’s nuclear plants, Japanese officials have reported.

The “How do we talk about the Back End?” session at the ANS Winter Conference & Expo on Wednesday, November 15, focused on recent experiences in communicating about used nuclear fuel to a skeptical public.

The article below was originally published in the March 2021 issue of Nuclear News. (Also included in that issue is a great review article from Lake Barrett outlining the current status of the decontamination and decommissioning going on at Fukushima .) That month marked 10 years since the Tōhoku earthquake and tsunami devastated Japan and crippled the Fukushima plant. The words that follow remain timely, since various news outlets continue to report on the dangers of Fukushima's wastewater without providing context to the Japanese plan to discharge it.

Washington, D.C. – The American Nuclear Society (ANS) supports the start of Japan’s controlled release of re-treated, diluted tritium wastewater into the sea from the Fukushima Daiichi Nuclear Power Plant (NPP), which sustained damage in the aftermath of a 2011 earthquake and tsunami.

International Atomic Energy Agency experts at Ukraine’s Russian-occupied Zaporizhzhia nuclear power plant have so far been unable to verify recent claims by Ukrainian president Volodymyr Zelenskyy that Russia may have planted explosives at the site to “simulate an attack.”

We’ve all seen the headlines such as “Should Japan Dump Fukushima's Radioactive Water into the Ocean?” along with “Japan Set to Pour Fukushima Waste into Pacific, Irking China” and “Japan Is Slowly but Surely Releasing Wastewater from the Fukushima Nuclear Plant into the Pacific Ocean.” The most recent spate of fearmongering was triggered by the IAEA’s July 4 announcement that the agency had finished its independent assessment of Japan’s plans to release the treated wastewater stored at the Fukushima Daiichi nuclear power station and found the plan “consistent with IAEA Safety Standards.”

Craig Piercy
cpiercy@ans.org

In his new film Nuclear Now, Oliver Stone brings his seasoned directorial hand to bear on the modern case for nuclear energy. Of course, all of us in the field are suckers for a good nuclear movie. (Triple feature with Pandora’s Promise and A New Fire, anyone?) Stone really does do a masterful job of weaving imagery, narration, and animation together to tell the story of his personal journey to understanding the indispensability of nuclear.

What struck me in particular was Stone’s assertion that “we are running out of time to be afraid.” It made me think: How much time do we have left to lock in a durable shift in public opinion that can weather adverse events and clear public policy obstacles and still give the investment community confidence to put big chips on the table?

You don’t have to look far to find progress. Gallup released its annual “Americans’ Opinions of Nuclear Energy” poll in April. It shows a 4-point year-over-year increase in support for nuclear energy, which represents the highest level of support in the post-Fukushima era. Gallup’s numbers align with other polls that show steady increases in support for nuclear in the last few years, especially among the left-leaning respondents.