Tokyo Utility Launches Spot-Linked Power Plan as Japan's Wholesale Prices Surge on LNG Crisis

Tokyo Utility Launches Spot-Linked Power Plan as Japan's Wholesale Prices Surge on LNG Crisis Tokyu Power's 30-minute pricing plan caps household exposure to volatile wholesale rates as coal displaces gas in Japan's generation mix. Tokyu Power has launched a spot market-linked household electricity plan in the Tokyo area, updating rates every 30 minutes to reduce customer exposure to surging wholesale power prices. The revised "Life Fit Plan" starts with June consumption, billed in July. Crucially, Tokyu Power will cap the spot price component, shielding households from the full impact of wholesale spikes.⁸ The plan arrives at a moment when Japan's wholesale electricity market is under sustained pressure. Natural gas accounts for around 32% of Japan's power generation, and roughly 98% of domestic gas demand is met by LNG imports. With spot LNG prices having roughly doubled since the Strait of Hormuz closure disrupted key Middle Eastern supply routes, the cost is flowing directly into power prices.^1,5 Japan imported 66.3 million tonnes of LNG in 2025, down 1.5% year on year, retaining its position as the world's second-largest buyer after China. The country's exposure to the Hormuz chokepoint is smaller than commonly assumed. Roughly 6% of Japan's LNG supply transits the strait, from Qatar and the UAE, while the majority comes from Australia at 26 Mt, Malaysia at 10 Mt, and Russia at 5.8 Mt via the Sakhalin-II project.¹ But the disruption is global, not bilateral. Iranian retaliation to US-Israeli strikes disrupted around 17% of LNG export capacity in Qatar, the world's second-largest LNG supplier, according to Kyodo. That volume does not need to be flowing to Japan to move prices. When Qatari cargoes disappear from the global market, every buyer competes harder for the remaining supply, and spot prices rise for everyone.⁷ The power sector response has been blunt. Japan and South Korea sharply increased coal-fired power generation in April and early May as LNG supplies tightened. Gas-fired electricity generation fell as utilities switched to cheaper fuel. Fei Xu, senior gas analyst at ICIS, said Japan's increased coal generation displaced roughly four LNG cargoes in April, about half the annual reduction in imports the government had expected from green energy targets.^7,6 The coal pivot carries its own costs. Coal accounted for 28% of Japan's power generation before the crisis, and that share is rising. For a country that has made climate commitments and faces carbon pricing pressure, every additional tonne of coal burned is a step backward. The G-7 countries have been making cautious overtures to Russia in hopes of stabilising energy supply, but no breakthrough has emerged.^1,2 Japan's nuclear fleet remains underutilised. By 2010 the country had 54 operational reactors providing around 25% of its electricity, with government plans to expand that to 50% by 2030. Fukushima changed everything. Nuclear now accounts for just 9% of generation. The Kashiwazaki-Kariwa plant on Japan's northern coast is the world's largest nuclear facility, but restarting it will not resolve the broader energy dilemma.^3,1 Tokyo has moved to release around 80 million barrels from its strategic petroleum reserves, equivalent to roughly 26 days of domestic oil demand. That stabilises the immediate fuel balance, particularly as Japan covers nearly 100% of its gasoline and around 95% of its diesel demand through domestic refining. But strategic reserves address crude oil, not LNG. There is no equivalent strategic stockpile for gas.¹ Wood Mackenzie analyst Lucas Schmitt warned that the conflict will "significantly reduce Asian LNG demand growth in 2026." The consultancy has cut its forecast for Asian LNG imports to about 5 million metric tonnes from 12.4 million tonnes, assuming a two-month disruption to Middle Eastern supply. Around $107 billion in planned LNG infrastructure investments in the region could be at risk, according to Global Energy Monitor.⁴ The structure of Japan's gas demand makes the power sector particularly exposed. Electricity generation absorbs roughly 55-65% of total gas consumption. When LNG prices spike, power prices follow within hours on the spot market. Tokyu Power's 30-minute pricing plan is an attempt to pass through that volatility more transparently while capping the worst outcomes for households. The signal to watch is whether other Japanese utilities follow Tokyu Power's model. If spot-linked plans with caps proliferate, the risk transfers from households to retailers, who must hedge their exposure or absorb losses when wholesale prices exceed the cap. In a market where coal is displacing gas at the margin, the cap level effectively sets the price at which utilities prefer to burn coal rather than pass through LNG costs to customers.^8,7