In 1872 (Meiji 5), the first gas lamps in Japan were lit on the horse-drawn carriage road in Yokohama City, becoming a symbol of the era of enlightenment.
In 1872 (Meiji 5), the first gas lamp in Japan was lit on the present-day Yokohama City horse carriage road as a gas business.
In Meiji 5, the first gas lamp lit in Yokohama, marking the start of gas fuel use in Japan.
In 1874 (Meiji 7), 85 gas lamps were lit in Tokyo from Kinugasa Bridge to Shiba, Ginza, and Keibashi.
In 1874 (Meiji 7), the first 85 gas lamps were lit in Tokyo, from Kanesugi Bridge to Shiba and Ginza, reaching Kyobashi.
By around 1877 (Meiji 10), 356 gas lamps illuminated the streets of Tokyo.
Around 1877 (Meiji 10), 356 gas lamps illuminated the streets of Tokyo.
Around 1877 (Meiji 10), 356 gas lamps illuminated the streets of Tokyo.
In 1818, the Tokyo Gas Company was founded, and in 1835 the first Japanese gas appliance, the "gas stove," was sold.
After the "First Founding" of the company in 1885 (Meiji 18), we have progressed toward the "Second Founding" by achieving LNG introduction and transformation into a comprehensive energy company.
The first founding of the company in 1885 (Meiji 18).
In Meiji 18, the Tokyo Gas Company was founded.
On October 1, 1885 (Meiji 18), the Tokyo Gas Company was founded as a private enterprise, led by Eiichi Shibusawa.
On October 1, 1885 (Meiji 18), the private company "Tokyo Gas Company" was founded.
Eiji Shibusawa, then Director of the Tokyo Prefecture Gas Bureau, founded the private company "Tokyo Gas Company" on October 1, 1885 (Meiji 18).
In 1902, a rice cooker was invented and commercialized, and a monopoly patent was obtained.
In 1818, the Tokyo Gas Company was founded, and in 1835 the first Japanese gas appliance, the "gas stove," was sold.
In 1902, a rice cooker (kamado) was invented and put into practical use, obtaining a monopoly patent.
Aiming to popularize gas in households, the company developed cooking appliances and, in 1902, invented and commercialized a rice cooker, securing a monopoly patent.
In Meiji 35, Japan's first gas appliance, the "gas stove," was sold.
Tokyo Gas cooking classes uphold the philosophy of "supporting a rich life through food," and in 1913 (Taisho 2) the first "cooking workshop" was held in Tokyo's Ushigome with gas fire cooking.
In 1913 (Taisho 2), the first "Cooking Workshop" was held in Niigō, Tokyo.
In Taisho 2, the first cooking class was held in Ushigome. The purpose was to guide the use of gas cooking appliances, and participants experienced the convenience of gas cooking compared to cooking with firewood or charcoal.
The second cooking class opened in Kyobashi in Taisho 3.
The second class was held in Keibashi in Taisho 3, and the class was a success, reflecting the enthusiasm for gas-powered cooking.
In Meiji 5, the first gas lamp in Yokohama lit up, marking the beginning of gas fuel use in Japan.
During the 1923 Great Kanto Earthquake, many fires and damages occurred. Gas leaks were relatively minor due to buried gas pipes, and major damage was avoided.
In September 1923, the Great Kanto Earthquake occurred.
In September 1923, the Great Kanto Earthquake struck. Fires sparked by the quake caused widespread destruction, claiming many lives and homes. The company suffered significant losses, but fortunately the feared gas leaks were minimal due to relatively minor damage to buried gas lines, preventing major incidents.
In 1818, the Tokyo Gas Company was founded, and in 1855, Japan's first gas appliance, the "gas stove," was sold.
The Tokyo Gas cooking class that began in Taisho 2 (1913) held its first class in 1935 (Taisho 14).
The second class was opened in 1914 (Taisho 3) at Kyobashi and was a great success.
It has been confirmed that gas cooking equipment was already in use.
In Showa 11, a booklet titled "Recipe Bookmark" focused on oven cooking was published, introducing high‑class Western dishes such as sweet potato and gratin.
In Showa 11, a booklet titled "Cooking Bookmark" focusing on oven cooking was published, introducing high-class Western dishes such as sweet potato and gratin. By then, the classes had expanded to five locations—Nihonbashi, Yotsuya, Honjo, Ebara, and Shibuya—held 2 to 7 times a week at each site.
From Showa 15 to 27, classes were suspended due to the Pacific War.
From 1940 to 1950, the classes were suspended due to the impact of the Pacific War.
A booklet titled "Recipe Bookmark" was published in 1936 (Showa 11), introducing Western cuisine.
In Showa 30, the first directly operated cooking school was opened in Ereba, holding the first postwar class.
In Showa 30, the first directly operated cooking school was opened in Ebara, conducting the first postwar classes. The majority of participants were housewives, reflecting the postwar recovery economy and the enrichment of home kitchens.
In 1956, Tokyo Gas (Gas) designated 44 appliance contractors and began the distribution of gas appliances.
We certified 44 appliance consignment sales stores among the Tokyo Gas (GAS) bath specification merchants and started consignment sales of gas appliances.
In Showa 33, a cooking class in Ginza also opened.
In 1958, nine of the appliance contractors were designated as service stations, handling general reception, gas fee collection, and construction charges from customers.
Nine of the consignment sales stores were designated as consignment service stations, and they began handling general reception from customers, as well as collecting gas fees and construction charges.
In Showa 33, a cooking school in Ginza also opened.
In 1955 (Showa 30), the first directly operated cooking school was opened in Ereba, holding the first postwar class.
In 1967, amid rapid population growth in the metropolitan area, a business plan was drafted to meet rising energy demand with natural gas, including construction of a new plant and a natural gas ring main.
In 1967, in response to the population increase in the metropolitan area, plans for a new plant and a natural gas ring main were formulated.
Tokyo Electric Power Company (now JERA) and Tokyo Gas signed LNG purchase agreements with Marathon Oil and Phillips Petroleum (now ConocoPhillips) in March 1967, under the import agency support of Mitsubishi Corporation.
In November of the same year, the LNG tanker "Polaris Alaska" carrying 30,000 tons of LNG from Alaska docked at the Negishi plant, marking the opening of the LNG era.
In 1969, Japan's first LNG (liquefied natural gas) introduction. Construction of four LNG tanks at the Negishi plant began.
In 1969, LNG was introduced (contributing to local environment) and the company became a comprehensive energy enterprise.
At the Negishi plant, construction of four LNG tanks began (completed in October 1969; the plant is now renamed Negishi LNG Base).
In November of the same year, the LNG tanker "Polaris Alaska" from Alaska, carrying 30,000 tons of LNG, docked at the Negishi plant, marking the beginning of the LNG era.
In 1971, construction of the Sodegaura plant began.
In 1971 (Showa 46), the gas high‑speed range "Conveck" was introduced.
In 1971, the gas-powered high-speed range "Conveck" was introduced.
In 1971, construction of the Sodegaura plant began, and at the same time, a high-pressure gas transmission pipeline encircling the metropolitan area was started, connecting the new plant with the Negishi plant.
Construction of the Sodegaura plant began, and a high‑pressure urban gas transmission pipeline linking the new plant and Negishi plant around the metropolitan area was also started.
The heat content change from 5,000 kcal to 11,000 kcal was carried out from 1972 to 1988.
With the spread of natural gas, the gas supplied was upgraded from 5,000 kcal to 11,000 kcal per unit, a process carried out from 1972 to 1988.
In 1973, the Sodegaura plant began operation.
Sodegaura Plant Commencement (1973)
The Sodegaura plant became operational.
In 1976, the natural gas ring main connecting the Sodegaura and Negishi plants began operation.
In 1976, the natural gas ring main line (Sodegaura Plant to Negishi Plant) began operation.
The natural gas ring main between Sodegaura and Negishi plants began operation.
In 1981, the development of a safety system incorporating microcomputer technology into gas meters began.
A project to develop a safety system incorporating microcomputer technology into gas meters was launched in 1981.
A project to integrate microcomputer technology into gas meters for safety was launched.
In 1983, the development of a microcomputer meter that shuts off gas during earthquakes was completed and put into use.
In 1983, the development of the "Microcomputer Meter"—which continuously monitors gas flow and can shut off gas during earthquakes—was finally completed and put into use.
Development of the "Microcomputer Meter" that continuously monitors gas flow and can shut off gas during earthquakes was completed and put into use.
In 1988, free installation for all households began.
In 1988, free installation to all households finally began.
Free installation of microcomputer meters was started for all households.
In 1992 (Heisei 4), "Kids in the Kitchen" was launched for children's food education.
In 1992, "Kids in the Kitchen" was launched for children's food education.
In 1995, "Eco Cooking" was started to consider the environment.
The effectiveness of the system was highly praised during the 1995 Great Hanshin-Awaji Earthquake.
The effectiveness of microcomputer meters was highly praised during the Hanshin-Awaji earthquake.
In Showa 37, "Eco Cooking" that considers the environment was started.
In 1997, a legal amendment made it mandatory to install microcomputer meters on gas meters with a maximum flow rate of 16 m³/h or less.
A legal amendment made installation of microcomputer meters mandatory for gas meters with a maximum flow of 16 m³/h or less.
In 1998, LNG reception began at Aoi Island, Tsurumi Ward, Yokohama City.
In 1998, development of household fuel cells began, and through countless tests, a catalyst for converting city gas to hydrogen for home use was completed.
LNG reception began at Aoi Island in Tsuruimachi, Yokohama City.
We started developing fuel cells for home use and, through countless tests, completed a catalyst that converts city gas into hydrogen for household use.
In 1995 (Heisei 7), "Eco‑Cooking" was started, emphasizing environmental consideration.
In 2001, the operation of "SUPREME," which automates earthquake detection and gas shutoff, began.
In 2001 (Heisei 13), a cooking class for men titled "Men's Kitchen" was launched.
In 2003, a cooking class for men called "Men's Kitchen" was launched.
Since 2001, the earthquake disaster prevention system "SUPREME" has been in operation.
The earthquake disaster prevention system "SUPREME" began operation.
In 2002, Tokyo Gas Customer Service Co., Ltd. was established, transferring meter reading, fee collection, and periodic safety inspections from Tokyo Gas.
Tokyo Gas established Tokyo Gas Customer Service Co., Ltd. and transferred the meter reading, fee collection, and periodic safety inspection operations that Tokyo Gas had previously performed.
In May 2009, the world's first residential fuel cell for single-family homes, "Enefarm," was released.
Since 2005, participation in the Ministry of Economy, Trade and Industry's "Large-Scale Demonstration Project for Fixed Fuel Cells".
We participated in the Ministry of Economy, Trade and Industry’s "Large-Scale Demonstration Project for Stationary Fuel Cells."
In 2006 (Heisei 18), "La Cucina Espresso" was introduced, a style that brings out the flavor of ingredients with the power of flame, enjoying the senses at speed and simultaneous cooking.
In 2008, "La Cucina Espresso" was introduced, a style of simultaneous cooking that brings out the best of ingredients with the power of flame and enjoyment of the five senses.
In Showa 40, the "La Cucina Espresso" style, which brings out the best of ingredients with the power of flame and offers a sensory, simultaneous cooking experience, was launched.
The establishment began in April 2008 with Eneasta, Tokyo Gas Customer Service, and Tokyo Gas forming a trinity to provide a one-stop solution for the diverse needs of local customers, called Tokyo Gas Life Ball.
EneSta, Tokyo Gas Customer Service, and Tokyo Gas formed a triad and began establishing "Tokyo Gas Life Ball," a one-stop service to meet the diverse needs of local customers.
In May 2009, the residential fuel cell "Enefarm" was released.
In May 2009, the world’s first residential fuel cell "Enefarm" for detached houses was launched.
We launched the world’s first residential fuel cell for single-family homes, "EneFarm."
In November 2011, the management vision "Challenge 2020 Vision" was announced.
We announced the management vision "Challenge 2020 Vision."
In Showa 45, the Tokyo Gas cooking school celebrated its 100th anniversary.
In February 2013, to accelerate new upstream project development in North America, Tokyo Gas America Co., Ltd. (TG America) was established.
To accelerate new upstream projects in North America, we established Tokyo Gas America Inc. (TG America).
In March 2013, a sales contract was signed with Quick Silver Resources in the Barnett Shale Basin of Texas, and the first rights to shale gas development were obtained.
We signed a purchase agreement in the Barnett Shale Basin in Texas with Quick Silver Resources Inc., and for the first time acquired rights to a shale gas development project.
In 2012, Tokyo Gas cooking classes celebrated their 100th anniversary.
In 2014, the Enefarm for condominiums was added to the lineup, and improvements continue to this day.
We added a residential fuel cell for condominiums to our lineup.
In December 2014, Tokyo Gas Asia Co., Ltd. was established in Singapore as the headquarters for business and investment activities in Southeast Asia.
We established Tokyo Gas Asia Inc. in Singapore as the headquarters for business and investment activities in Southeast Asia.
In 2016, LNG reception began in Hitachi City, Ibaraki Prefecture.
In March 2016, the Hitachi LNG base built outside Tokyo Bay began operations.
Operations began in March 2016
LNG reception began at the Hitachi LNG base in Hitachi City, Ibaraki Prefecture.
In April 2016, the full liberalization of electricity retail began, and efforts to expand the business were initiated.
In April 2016, the full liberalization of electricity retail (electricity deregulation) began.
The wholesale retail liberalization of electricity (electricity liberalization) began.
In May 2018, long-term LNG contracts derived from U.S. shale gas were accepted at the Negishi LNG base.
In May 2018, for the first time in Japan under a long-term contract, LNG derived from U.S. shale gas (produced at the U.S. Maryland Cove Point LNG Project) was accepted at the Negishi LNG terminal.
In a long-term contract, we accepted LNG derived from U.S. shale gas—the first in Japan—produced at the Cove Point LNG Project in Maryland, at the Negishi LNG terminal.
In 2019 (Reiwa 1), an "Online Cooking Class" was conducted to realize classes during the COVID‑19 pandemic.
In 2019, "Online Cooking Class" was held to realize a classroom during the COVID-19 pandemic.
In November 2019, the Tokyo Gas Group management vision "Compass2030" was formulated.
As a compass to guide us through uncertain times, we formulated the Tokyo Gas Group management vision "Compass2030." This vision declared, for the first time among domestic energy companies, a challenge toward CO₂ net zero, demonstrating our resolve to face new challenges.
In December 2019, investment was made in a Mexican renewable energy company, and joint development of wind and solar power began.
In December 2019, TG America acquired 50% of the shares of Eorius Enthe, a joint development and operation company established by French Engie as a platform for renewable energy development and operation in Mexico.
TG America acquired a 50% stake in Eorius Enthe, a joint development and operation company established as a business platform for renewable energy development and operation in Mexico by Engie France. The investment was in two projects planned by Eorius Enthe: wind power and solar power, marking our first investment in overseas renewable energy projects and joint development and operation companies.
In February 2020, Tokyo Gas and its subsidiary completed a demonstration experiment of a smart energy network.
In February 2020, TGES, Calbee Inc., Canon Inc., and Kumi Pharmaceutical Co., Ltd. launched the first domestic integrated energy-saving project between factories, "Kiyohara Industrial Estate Smart Energy Project," in Utsunomiya City, Tochigi Prefecture, achieving about 20% energy and CO₂ savings that would be difficult for a single facility.
TGES, Calbee Co., Ltd., Canon Inc., and Kumikoh Pharmaceutical Co., Ltd. launched the first domestic integrated energy‑saving project between factories, "Kiyohara Industrial Estate Smart Energy Project," in Utsunomiya City, Tochigi Prefecture.
In July 2020, our company and our wholly-owned subsidiary Tokyo Gas Engineering Solutions Co., Ltd. (TGES) completed the Smart Energy Network project in the northern area of JR Tamachi Station, East Exit, Minato Ward, Tokyo, in collaboration with the city.
Our company and our 100% owned subsidiary, Tokyo Gas Engineering Solutions Co., Ltd. (TGES), completed the Smart Energy Network (Smart Ene) project, which was being carried out in the northern area of JR Tamachi Station East Exit in Minato-ku, Tokyo, in collaboration with the Tokyo Metropolitan Government.
By the end of August 2020, the number of customers surpassed 2.5 million.
The number of "Always Electric" contracts surpassed 2.5 million by the end of August 2020.
In October 2020, a joint development agreement was signed with FirstGen (FGEN) of the Republic of the Philippines for the construction and operation of an LNG receiving terminal, and a mutual cooperation agreement for the construction and operation of a floating LNG terminal was also signed.
Following the signing of a joint development agreement for the construction and operation of an LNG receiving base with FirstGen (FGEN) of the Republic of the Philippines, we also signed a mutual cooperation agreement for the construction and operation of a floating LNG base. This agreement enabled the construction of a floating LNG base in Batangas City, southern Luzon.
Triggered by the 2011 nuclear accident, the management vision "Challenge 2020 Vision" was announced in November 2011.
Agreed on a strategic partnership with Octopus Energy (2020 December).
We agreed to a strategic partnership with Octopus Energy Ltd.
Established a joint venture domestically (February 2021) and invested in Octopus Energy through Tokyo Gas United Kingdom Co., Ltd., newly established in the UK.
We established a joint venture domestically and invested in Octopus Energy Ltd. through Tokyo Gas United Kingdom Ltd., which was newly established in the UK.
In March 2022, a methanation facility was installed at Yokohama Techno Station in Tsurumi-ku, Yokohama, and a demonstration test began.
Methanation technology demonstration tests began in March 2022 at the methanation facility installed at Tokyo Gas Yokohama Techno Station.
We began a demonstration test of methanation technology at the methanation facility installed at Tokyo Gas Yokohama Technostation (Tsurumi-ku, Yokohama City).
In April 2022, Tokyo Gas announced a new group management philosophy.
The company announced a new "Group Management Philosophy".
In November 2023, investment was made in a UK offshore wind investment fund, and shares of Dutch offshore wind assets were acquired.
Decided to invest in the offshore wind investment fund established by Octopus Energy in the UK in October 2022, and signed a contract to acquire 5% of the shares of a 731.5 MW offshore wind power asset in the Netherlands as the first project.
Launched a new solution business brand "IGNITURE".
Starting in January 2024, deployment across the entire supply area began.
We began installing smart meters (microcomputer meters with remote communication capability) throughout the entire supply area.
In August 2024, participation in a floating offshore wind power project in Portugal was announced.
Decided to participate in floating offshore wind power projects in Portugal.
We decided to participate in a floating offshore wind power project in Portugal. The project involves a floating offshore wind farm with a 10 MW class turbine, one of the few of its kind in the world, operating commercially.
In the new "Materiality" of the Tokyo Gas Group, the group has set two values: "coexistence of stable energy supply and carbon neutrality" and "providing solutions that contribute to decarbonization, optimization, and resilience."
The Tokyo Gas Group announced its new "Materiality," highlighting two values created by the group: "the coexistence of stable energy supply and carbon neutrality" and "providing solutions that contribute to decarbonization, optimization, and resilience."
Tokyo Gas Group celebrated its 140th anniversary on October 1, 2025.
Tokyo Gas Group will celebrate its 140th anniversary in October 2025.
Towards 2030, efforts are underway to realize a carbon-neutral society through the production of e-methane and the expansion of offshore wind.
Tokyo Gas Co., Ltd. acquired 106,500 shares (totaling 685,479,990 yen) via a trust established for its stock compensation program on November 10, 2026. The acquisition result was officially announced in a press release on November 12, 2026.
Tokyo Gas confirmed that a third party gained unauthorized access to the email distribution service of its outsourcing partner, Arara, resulting in the external leakage of email addresses of customers registered in the gas pipeline inspection service. The leak involved 85,565 records, and did not include names, addresses, phone numbers, company names, or other personal information.
Tokyo Gas Engineering Solutions (TGES) and Getworks have entered into agreements concerning land use and power supply to launch a container-based data center operation at the Kushiro facility of Nippon Paper. TGES will handle foundation work, equipment design, and construction, while Getworks will be responsible for planning, design, construction, and operation. Nippon Paper will provide the site and supply power using its existing energy infrastructure.
Press Release: Tokyo Gas Expands IGNITURE, a Solution to Social Challenges in the AI and GX Era
Tokyo Gas Co., Ltd. has entered into an investment agreement with startup PXP, which develops film-type next-generation solar cells. The two companies have already conducted multiple pilot experiments, and this investment will strengthen their collaboration and accelerate the societal implementation and widespread adoption of calcopalladium solar cells.
Tokyo Gas Engineering Solutions Co., Ltd. (TGES) and Macnica Co., Ltd. have signed a Memorandum of Understanding (MOU) to utilize Physical AI for daily inspections of plant and utility equipment, and have commenced joint verification. The verification involves step-by-step testing of humanoid robot autonomous walking, information acquisition, and equipment operation, aiming to establish a future autonomous inspection model. By combining TGES's O&M expertise with Macnica's AI and robotics technology, verification will also be conducted on a digital twin.
Tokyo Gas Co., Ltd. has decided to implement an employee stock compensation plan (stock grant trust). This plan aims to enhance welfare benefits and foster employees' sense of belonging and participation in management, thereby improving corporate value.
Tokyo Gas Co., Ltd. resolved at a board meeting held on October 29, 2026, to acquire treasury shares pursuant to Article 165, Paragraph 3 of the Companies Act. The purpose of the acquisition is to return profits to shareholders in accordance with the shareholder return policy announced on October 29, 2025.
In the interim period of the fiscal year ending March 2027, net sales were ¥1,375.8 billion, operating profit was ¥103.2 billion, and ordinary profit was ¥107.9 billion, all exceeding the levels for the same period of the previous year. Interim net income attributable to owners of the parent was ¥99.0 billion, down from the same period of the previous year. The equity ratio was 42.4%.
Tokyo Gas will adjust the unit price of gas for the December 2026 meter readings based on the raw material cost adjustment system. Compared to the November 2026 meter readings, the rate will increase by 7.66 yen per m³ (45 MJ) in the Tokyo area and 7.8 yen in the Gunma area, both including tax. The applicable rates will be announced in advance on Tokyo Gas's website and other channels.