Company history

In October 1885 the gas bureau run by the Tokyo prefectural government was sold off, and Tokyo Gas Company was founded to take it over. The city-gas business that had begun in Yokohama in 1874 thus restarted in the capital as a private undertaking, with Shibusawa Eiichi among those behind it. Before electric light spread, gaslight carried street lighting in Meiji Tokyo and demand was certain — but making gas from coal meant hauling and storing the coal, running the works, and reaching every customer, a heavy plant business that a prefecture short of capital could not push forward.

Shibusawa had in fact stopped an earlier sale, resolved by the prefectural assembly in 1881, and spent four years opening up indoor demand, enlarging the plant and sending engineers to Shanghai; only once the business was in the black did he take it on, for ¥270,000. What settled the company’s shape as a metropolitan monopoly, though, was the war: in 1944–45 it absorbed Kanto Gas and eighteen other suppliers in the capital region, folding nineteen companies into one and fixing the skeleton of the supply network for the next eighty years. Listing on the Tokyo Stock Exchange followed in 1949.

In September 1962 the company raised the calorific value of its gas from 3,600 to 5,000 kilocalories, switching feedstock from coal to oil-based gas. The exercise taught it that changing the raw material is never only a fuel decision — it obliges the supplier to rebuild its plant and to deal with every appliance in every customer’s kitchen at the same time. Within a decade that lesson would be applied on a scale nobody had attempted anywhere.

By the late 1960s two pressures pointed the same way. Gas demand in the capital region was climbing with the growth economy, and urban air pollution had become a political problem; low-sulphur, high-calorie natural gas answered both at once. The Negishi terminal started up in 1966, purchase contracts with Marathon Oil and Phillips Petroleum were signed in 1967, and in November 1969 the tanker Polar Alaska berthed at Negishi with Japan’s first cargo of LNG — the beginning of a trade that would make the country the world’s largest LNG consumer.

The economics of tankers, terminal and pipelines would not close on Tokyo Gas’s own account. Of the 960,000 tonnes a year, it took only 240,000; the other three quarters went to Tokyo Electric Power, its competitor for the same demand for heat and light and, at that point, the owner of not one LNG-fired plant. What drove the decision was not the resource security later read back into it — the oil shock was still six years away — but the air the city breathed.

From June 1972 the calorific value was raised again, from 5,000 to 11,000 kilocalories, and roughly four million households had to have their appliances converted one at a time. Switch-over dates were set district by district so that old and new gas never mixed, and the visits were made by the company’s own staff rather than contractors, on the reasoning that the call was itself the customer relationship. Brunei LNG and the Sodegaura terminal arrived in 1973, widening both sourcing and receiving capacity. Unregistered appliances, ageing equipment and protest movements over safety left the in-house phrase “conversion hell”; two oil shocks passed while the work went on. It finished in October 1988, sixteen years after it began.

With conversion complete, the task became supplying the entire capital region on natural gas alone — which meant never depending on one seller. Malaysia (1983), Australia (1989), Indonesia (1994) and Qatar (1998) were added until the supply base was a portfolio of twenty- to twenty-five-year contracts spread across the Asia-Pacific and the Middle East, a structure that spread volume and price risk across buyer and seller alike and became the model other Japanese gas and power utilities followed.

The receiving end was built to match. The Ohgishima terminal opened in 1998, giving three terminals on Tokyo Bay alongside Negishi and Sodegaura, while the natural-gas ring main (1976) and the Tokyo Bay subsea trunk line (1977) tied them together so that a failure at any one terminal need not interrupt supply. From the 2000s the pipelines pushed north — the Saihoku line in 2001, the Tochigi line in 2005, the Chiba–Kashima line in 2012 — and the Hitachi terminal followed in 2016 as a fourth receiving point outside Tokyo Bay, reaching inland industrial demand directly.

Growth in sales, however, did not translate into growth in profit. Revenue nearly doubled from $10.9B (¥1.27tn) in the year to March 2006 to $18.9B (¥2.29tn) in the year to March 2015, while operating profit moved only from ¥112.3bn to ¥171.8bn. Under the fuel-cost adjustment mechanism, regulated tariffs track the raw-material price: when LNG rises, revenue rises with it and the margin is compressed. The rule smoothed earnings, but it also meant that selling more gas was not a route to a larger business — and that finding a second source of profit was now the long-term problem.

Full liberalization of electricity retailing in April 2016 was, for Tokyo Gas, an opening rather than a threat. It already sold some 10 billion kWh a year to factories and large sites; now it entered the household market with bundled gas-and-power tariffs and a target of 30 billion kWh by 2020. Operating profit in the power segment grew from ¥4.5bn in the year to March 2017 to ¥51.1bn by the year to March 2023, a second pillar behind gas. But the entry was also defensive: gas retailing was liberalized in April 2017 and Tokyo Electric Power’s retail arm came into the capital’s gas market, so the company was attacking and defending at once.

The first year of that exchange showed the cost. Consolidated operating profit fell to ¥58.4bn in the year to March 2017 from ¥192.0bn a year earlier, as cheaper crude pulled down gas unit prices and the cost of winning electricity customers landed at the same time. Profit recovered to ¥116.3bn the following year, but the stable structure of the regulated era did not return: earnings now had to be won back annually on price and service.

The strategic answer was to stop depending on volume. Compass2030, set out in November 2019, accepted that domestic gas sales would shrink structurally with population decline and efficiency, and shifted the target mix toward power, overseas and solutions — ¥50bn of a ¥200bn profit goal to come from abroad. In April 2022 the pipeline business was carved out into Tokyo Gas Network under a holding structure, separating regulated from competitive businesses. Then Russia’s invasion of Ukraine lifted LNG markets: the year to March 2023 brought record revenue of ¥3,289.6bn, up 53%, and net profit of ¥280.9bn — much of it inventory gains and trading, and therefore not repeatable. In December 2023 the company spent $2.9B (¥405bn), almost exactly that year’s record ordinary profit, on the US shale producer Rockcliff Energy, quadrupling its North American output; in 2025 Elliott Management surfaced with a 5% stake, and the capital policy was rewritten within a year.