Saibu Gas
A Japanese urban-gas utility serving northern Kyushu, including Fukuoka, Saga, Nagasaki, and Kumamoto.
Last updated August 22, 2026
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Overview
Saibu Gas is a Japanese gas utility headquartered in Fukuoka that supplies the northern Kyushu region. Its service territory includes parts of Fukuoka, Saga, Nagasaki, and Kumamoto prefectures, making it a regional energy-infrastructure company rather than a nationwide consumer brand. The company’s core business is the distribution and sale of urban gas to residential, commercial, and industrial customers, supported by liquefied natural gas and related energy services. The company emerged from the consolidation of several early gas businesses in northern Kyushu. The regional history of gas supply dates to 1902, when Nagasaki Gas was established as the first gas company in Kyushu. In 1913, Nagasaki Gas combined with three other gas companies to form the Saibu Gas Conglomerate. Saibu Gas in its modern corporate form was founded on December 1, 1930, through the acquisition of Toho Gas’s Kyushu branch operations in Fukuoka, Kumamoto, Nagasaki, and Sasebo. This origin gave the company a geographically broad operating base across northern Kyushu. Saibu Gas continued to expand through corporate integration and changes to its operating network. It merged with Kyushu Gas in 1943, moved its headquarters within Fukuoka in 1954 and again in 1988, and acquired the business of the Kurume City Gas Bureau in 2009. The Kurume transaction extended its presence in Fukuoka Prefecture and reinforced its role as a regional public-utility operator. In 2018, the company established a representative office in Singapore, indicating an effort to maintain an overseas business presence in addition to its domestic utility operations. Its positioning is based on reliability, regional coverage, and the provision of essential energy infrastructure. Unlike an international fuel or appliance brand, Saibu Gas is primarily experienced by customers through local gas connections, energy supply contracts, safety and maintenance services, and associated household or business solutions. Its business is therefore closely linked to regulated or infrastructure-intensive utility operations and to the long-term development of the communities it serves. The available reference material does not provide sufficient detail to describe current revenue, customer numbers, ownership structure, executive leadership, product-level branding, or the company’s present corporate organization. Those areas should be verified against current corporate disclosures before being added to the dossier.
History
Saibu Gas’s corporate history is rooted in the early development of manufactured-gas and urban-gas services in Kyushu. The regional industry began in 1902 with the establishment of Nagasaki Gas, identified in the reference material as Kyushu’s first gas company. In 1913, Nagasaki Gas merged with three other gas businesses operating in northern Kyushu, creating the Saibu Gas Conglomerate and establishing a precedent for regional consolidation. The present Saibu Gas company was founded on December 1, 1930. It was created by acquiring the Kyushu branch operations of Toho Gas in Fukuoka, Kumamoto, Nagasaki, and Sasebo. The company’s headquarters was located in Chiyo, in Fukuoka’s Hakata ward. This formation gave Saibu Gas a substantial northern-Kyushu footprint from the outset and connected the business to multiple urban markets rather than a single municipality. In 1943, Saibu Gas merged with Kyushu Gas. The merger was part of the continuing concentration of gas operations in the region and broadened the company’s institutional base. Its headquarters moved to Kego in Fukuoka’s Chuo ward in 1954, before returning to Chiyo in 1988. These relocations reflected changes in the company’s administrative and operating arrangements while retaining Fukuoka as its central base. A later expansion occurred in 2009, when Saibu Gas acquired the business of the Kurume City Gas Bureau. The transaction extended the company’s role in Fukuoka Prefecture and brought a municipal gas operation into its regional network. In 2018, Saibu Gas established a representative office in Singapore. The reference material does not specify the office’s activities, but its creation marked an overseas extension of the company’s corporate presence. Across these stages, Saibu Gas developed from a group of locally founded gas businesses into a consolidated regional utility. Its historical continuity has been shaped by mergers, acquisition of municipal gas operations, changes in headquarters location, and gradual geographic and organizational expansion. The available material does not establish additional details about later reorganizations, current ownership, financial performance, or present-day management, so those subjects remain open for verification.
- 2018
Singapore representative office established
[1]The company established a representative office in Singapore, extending its corporate presence outside Japan.
- 2009
Kurume municipal gas business acquired
[1]Saibu Gas acquired the business of the Kurume City Gas Bureau, expanding its regional utility operations in Fukuoka Prefecture.
- 1988
Headquarters returns to Chiyo
[1]Saibu Gas relocated its headquarters to Chiyo in Hakata-ku, Fukuoka.
- 1954
Headquarters moves to Kego
[1]The company moved its headquarters to Kego in Chuo-ku, Fukuoka.
- 1943
Merger with Kyushu Gas
[1]Saibu Gas merged with Kyushu Gas, further consolidating gas operations in northern Kyushu.
- 1930
Saibu Gas is established
[1]On December 1, Saibu Gas was founded through the acquisition of Toho Gas Kyushu branch operations serving Fukuoka, Kumamoto, Nagasaki, and Sasebo.
- 1913
Northern Kyushu gas businesses consolidate
[1]Nagasaki Gas merged with three other gas companies in northern Kyushu to form the Saibu Gas Conglomerate.
- 1902
Nagasaki Gas is founded
[1]Nagasaki Gas was established as the first gas company in Kyushu, providing an early foundation for the region’s later urban-gas industry.
Products and positioning
A major regional gas utility serving northern Kyushu through urban-gas distribution, liquefied natural gas supply, and related energy services.
Utility gas supply
Urban gas
Saibu Gas’s principal offering is urban-gas supply for customers in northern Kyushu. The service connects residential, commercial, and industrial users to the company’s local distribution network. The reference material identifies the company as a regional gas supplier but does not specify individual tariff plans, fuel composition, customer counts, or named consumer packages.
Energy supply
Liquefied natural gas
Liquefied natural gas is part of the company’s broader energy and gas-supply activities. It supports the supply chain behind a regional utility operation, although the available source does not provide details about specific terminals, procurement arrangements, volumes, or customer-facing LNG products.
Energy services
Related energy services
The company also provides services associated with its gas-utility role, potentially including customer support, network-related services, and energy solutions for homes or businesses. The supplied reference material does not identify specific service names or branded packages, so this entry is limited to the general category.
Recent events
NYK signs LNG bunkering partnership MoU[2]
NYK signed a partnership MoU with Itochu Enex, Kyushu Electric Power, and Saibu Gas to explore LNG bunkering operations in the Setouchi and Kyushu areas of Western Japan.
Sources2 sources
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