CorrectionOur 15 July correction to the 14 July editions itself carried an incorrect figure — August TTF settled at €53.06/MWh on 14 July, not €44.18. The cause was a stale exchange-data feed, now fixed. Read the full account →
Japan regulator approves Kashiwazaki-Kariwa Unit 6 operation until 2036
The NRA's approval clears a major hurdle for the world's largest nuclear plant, but local government consent remains the decisive bottleneck.
Japan's Nuclear Regulation Authority has broadly approved extending the operational life of Unit 6 at the Kashiwazaki-Kariwa nuclear power plant until 2036, Nikkei reported on Wednesday (2026-07-16). The approval covers a 1,356 MW advanced boiling water reactor at the site on Japan's northern coast.2
The decision removes a significant regulatory hurdle but is not a restart order. Local government consent from Niigata prefecture is still required, along with additional safety checks — and Niigata has been a persistent bottleneck throughout the restart process. Without that sign-off, the NRA's paper approval changes little on the ground.2
Kashiwazaki-Kariwa is the world's largest nuclear plant by capacity, a fact that makes every step in its long restart process consequential for Japan's energy balance. The country operated 54 reactors by 2010, supplying around 25% of its electricity, with government plans to push that share to roughly 50% by 2030.2 Fifteen years after the Fukushima disaster shuttered nearly the entire fleet, Japan's latest energy plan foresees renewables at 40-50% of generation by 2040, up from around 25% recently — but nuclear remains essential to bridge the gap in stable baseload supply.2
The slow restart pace keeps Japan heavily dependent on LNG imports. JKM Asian spot prices were at $19.93/MMBtu as of Wednesday morning (2026-07-16), a level that sustains pressure on Japanese utilities and keeps Asia competing with Europe for cargoes. Every reactor that returns to service reduces gas burn; the seven-unit Kashiwazaki-Kariwa plant alone could displace several million tonnes of LNG per year at full output, though full capacity remains a distant scenario.2
Independent researchers from Lawrence Berkeley National Laboratory estimate Japan could generate 70% of its electricity from renewables by 2035, well above the government's official 40-50% target for 2040.2 If that trajectory materialises, new nuclear baseload may eventually compete with solar and wind rather than substituting for coal — a scenario that complicates the long-run economics of the restart programme without undermining the near-term need for stable generation.
Nuclear developments elsewhere are already moving commodity markets. Romania's 1.3 GW Cernavoda plant has been offline for much of July (2026-07), pushing the country's electricity system "to its limits" and causing sharp morning and evening price spikes, according to analysts at Montel. ENTSO-E data indicate the outage was scheduled to run until 1 June — a date that appears carried over from an earlier entry, suggesting the current absence is unplanned or extended beyond the original schedule.1
On the uranium side, Goldman Sachs has updated its nuclear model to include small modular reactors, adding around 46 GW of SMR deployments by 2045.3 The revision lifts Goldman's nuclear generation forecast by 6% and adds 62 million pounds of uranium demand — a 17% upside to prior long-term estimates.3,4 Uranium spot prices are holding in the mid-to-high $80s per pound, with term pricing near $90/lb, according to Goldman.3 The URA uranium ETF was trading at $40.90 on Wednesday (2026-07-16), down 0.49% on the session.
The watch for traders is Niigata prefecture's response. Local opposition has blocked previous restart attempts at Kashiwazaki-Kariwa, and the prefecture retains effective veto power regardless of what the NRA approves. The regulator has cleared the technical bar; the political one is a different matter entirely.2