Japan marks 15 years since devastating earthquake, tsunami, and its nuclear energy transformation
The nation of Japan pauses this Wednesday, March 11, 2026, to commemorate 15 years since the catastrophic earthquake and tsunami that unleashed unparalleled destruction across its northeastern coast and precipitated the Fukushima Daiichi nuclear disaster. This date recalls an event that profoundly altered the country’s energy landscape, societal priorities, and disaster preparedness, prompting a comprehensive reevaluation of its foundational infrastructure and its long-term strategic direction. The magnitude 9.0 tremor, recorded as the most powerful in Japan’s history and among the world’s five strongest, struck at 2:46 PM local time on March 11, 2011, triggering a colossal tsunami just minutes later.
With its epicenter deep beneath the Pacific Ocean, approximately 80 miles off the Ojika Peninsula, the seismic event generated waves that swiftly transformed into towering walls of water. These destructive forces, reaching over 30 feet in height, surged miles inland, obliterating coastal communities, sweeping away vehicles, ships, and entire homes, particularly in the Sendai region.
The aftermath was staggering, with official figures reporting 15,894 fatalities and approximately 2,500 individuals still missing. Hundreds of thousands lost their residences, leading to the displacement of around 230,000 people in the wake of the tragedy.
The Fukushima legacy and a new generation’s vision
Beyond the immediate devastation, the disaster triggered an unprecedented nuclear crisis. The tsunami waves overwhelmed the Fukushima Daiichi plant, operated by the Tokyo Electric Power Company, disabling critical cooling systems and leading to the meltdown of three nuclear reactors. This incident marked the worst nuclear disaster since Chernobyl, necessitating the evacuation of roughly 160,000 residents from surrounding areas due to widespread radioactive contamination risks. The 2011 catastrophe stands as Japan’s gravest disaster since World War II, when atomic bombs devastated Hiroshima and Nagasaki in 1945.
Today, 15 years later, the nation continues its arduous reconstruction efforts in affected areas, grappling with the disaster’s long-term impacts, particularly in the Fukushima region where a segment of the population remains hesitant to return. Amidst this recovery, a striking shift in perspective is emerging regarding nuclear energy’s role in Japan’s future.
Takuma Hashimoto, who was merely three years old and living an hour’s drive from the plant when the disaster struck, now represents this evolving viewpoint. His family, terrified, found themselves trapped during the nuclear crisis, unable to evacuate due to a lack of gasoline. Now 18 and an engineering student at a technical college in Iwaki, where radiation levels are still monitored, Hashimoto is eager to contribute to Japan’s next generation of nuclear talent.
“I don’t think nuclear energy should be treated as automatically dangerous,” Hashimoto stated, reflecting a nuanced understanding that prioritizes safety protocols and technological advancements over outright rejection. His journey underscores a broader trend in Japan, signaling a return to a power source once largely shunned by public opinion.
Resurgence of nuclear power and shifting public opinion
Japan, a country with limited natural resources, was historically a strong proponent of nuclear power, with 54 reactors supplying approximately 30% of its electricity. The Fukushima disaster drastically turned public opinion against nuclear energy, leading to the shutdown of all reactors for safety inspections and upgrades. In 2012, the government initially decided to phase out nuclear power entirely, a decision reversed two years later, though the restart of reactors has been slow, with many permanently decommissioned.
Currently, Prime Minister Sanae Takaichi, a vocal advocate for nuclear energy bolstered by a significant electoral victory, is spearheading efforts to accelerate reactor restarts and foster new nuclear technologies. This strategic pivot aims to reduce Japan’s reliance on expensive imported fossil fuels, a critical energy security concern exacerbated by global geopolitical volatility. The resumption of operations at one of seven reactors at the Kashiwazaki-Kariwa plant, the world’s largest nuclear facility, in January 2025, marked a pivotal moment. Despite this, only 15 of Japan’s 33 remaining operational reactors have returned to service.
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A recent survey by the Asahi newspaper conducted in early 2025 revealed a subtle yet significant shift in public sentiment, with 51% of the population now favoring the resumption of nuclear activities. This figure marks a considerable increase from the 28% recorded when the newspaper began tracking the issue in 2013. Notably, younger demographics, specifically those aged 18 to 29, demonstrate the strongest support, with 66% expressing a positive view toward nuclear power. This evolving public acceptance is partly driven by escalating global energy demands, particularly from energy-intensive AI data centers, and geopolitical instability affecting oil supplies, which remain crucial for Japan’s energy mix.
Cultivating future talent and lessons in governance
To support this nuclear renaissance, educational institutions like Hashimoto’s college receive government funding aimed at training professionals in nuclear energy, regulation, and decommissioning. However, ensuring a sufficient pool of skilled talent remains a significant challenge. In 2025, admissions to nuclear-related courses across Japan totaled only 177 students, a stark contrast to the 317 enrolled just before the Fukushima disaster and the peak of 673 in the early 1990s. This shortage highlights a crucial bottleneck in the nation’s ambitious nuclear revival plans, necessitating concerted efforts to attract and retain new generations of experts.
Hashimoto recognizes the ongoing debate, frequently encountering anti-nuclear protesters near his college. Yet, his conviction remains firm: “What matters is using nuclear energy correctly, having measures in place if something happens, and developing technology to ensure accidents don’t occur.” This pragmatic approach underscores a belief in technological solutions and robust safety protocols as the path forward.
Seiji Inada, 49, a former member of the government’s crisis response team in 2011, offers a historical perspective. Tasked with tallying casualties, he spent days in a subterranean bunker under the prime minister’s office in Tokyo, witnessing the horrifying images of a reactor building exploding. The potential for a radioactive cloud to envelop Tokyo, one of the world’s largest cities, loomed large, leading to the evacuation of some 150,000 people from around the plant, many of whom never returned.
“I remember during my short lunch break, I called my father and told him, ‘Well, I can’t tell you details, but prepare for the worst-case scenario,'” recalled Inada, now with FGS Global consultancy. A 2012 investigation attributed the disaster to “man-made” failures, citing deficiencies in safety protocols by the plant operator, regulators, and the government. The then-Prime Minister, Naoto Kan, resigned amidst criticism over his crisis management. Inada emphasizes the critical lesson from March 11: “The lesson of March 11 is humility: low-probability shocks happen. What matters is governance.” While Inada initially found it inconceivable that Japan would revert to nuclear power, he notes, “time heals wounds,” and “the shock of 2011 was deep and shaped attitudes for years. Over time, the debate has shifted from emotion to a pro and con analysis.”
Advancements in nuclear safety and industry outlook
Veteran nuclear industry professional Keiji Matsunaga, 59, is actively integrating the critical lessons learned from Fukushima into the development of safer reactors at Toshiba. Having joined the company in 1991, five years after Chernobyl, Matsunaga has long been acutely aware of the industry’s associated stigma. The Fukushima disaster intensified these perceptions, leading to incidents such as his teenage daughter confronting a teacher who labeled nuclear power as inherently dangerous and unsuitable for Japan. Despite the downturn in Toshiba’s nuclear business post-Fukushima and the bankruptcy of its US unit, Westinghouse, Matsunaga never wavered in his conviction that nuclear energy is indispensable for Japan’s energy security.
The gradual increase in reactor restarts is now positively impacting business operations. While Toshiba, now a privately held entity, does not publicly disclose profit targets for its nuclear division, Mitsubishi Heavy Industries, another major player in the sector, indicated in early 2025 that its nuclear energy unit expects sales to reach a record 400 billion yen (approximately $2.7 billion USD) in the coming year. This projection surpasses an earlier target that was not anticipated before 2030, reflecting renewed industry optimism and investment.
Any new power plants designed and constructed are engineered to incorporate significantly enhanced safety features, Matsunaga asserts. For instance, reactor buildings are now being designed with roofs reinforced with steel plates and concrete capable of withstanding the impact of falling aircraft. These next-generation facilities will also feature more robust natural circulation systems, alongside other advanced cooling mechanisms, to ensure reactors remain effectively cooled even under extreme conditions. Such measures are specifically designed to prevent a recurrence of the Fukushima scenario, where the failure of cooling systems critically contributed to the core meltdown. “We believe that by adopting these measures, events like Fukushima can be avoided,” Matsunaga concluded, highlighting the industry’s commitment to prioritizing safety and reliability in its forward-looking strategies.