Kygnus Sekiyu

What Kygnus Sekiyu does

Kygnus Sekiyu K.K. (キグナス石油株式会社) is a Japanese petroleum wholesaler and service station operator founded in 1972, with predecessor activity dating to 1922. The company sells automotive gasoline, kerosene, diesel fuel, heavy fuel oils, lubricating oils, and specialty petroleum chemicals primarily to a nationwide network of approximately 423 franchisee service stations under the "Kygnus" brand, with additional direct sales of industrial fuels and lubricant exports to Taiwan (since 2015). It operates through three regional branches (East Japan in Tokyo, Chubu in Nagoya, West Japan in Osaka), two logistics management centers (Tokyo and Hyogo), and three oil storage terminals (Nagoya, Kanazawa, Takasago), with Cosmo Oil Co., Ltd. as its main supplier since January 2020.

The business runs on a BtoBtoC wholesale model: Kygnus supplies franchisee operators who in turn serve end consumers at the pump. Dedicated sales staff (5–10 dealers per representative) act as operational consultants and business partners to franchisees, alongside ancillary revenue streams from co-branded credit cards, car leasing (Sumacara), and car-care support products. The company has ~78 employees, ¥347.7B in FY2025 net sales, and ¥3.7B ordinary profit (FY2023), with 80% ownership by San-Ai Oil Co., Ltd. and 20% by Cosmo Energy Holdings Co., Ltd.

Kygnus is actively diversifying beyond traditional petroleum into EV charging (launched December 2025 in partnership with Plago Inc.), agricultural solar power (operational September 2025), carbon offset fuels using J-Credits (January 2026), and grid-scale battery storage via the M&K Energy joint venture (April 2026), positioning itself for Japan's energy transition. ISO 14001 certified since 2004 and recognized as a Health Management Outstanding Company for 2025 and 2026.

Name

Kygnus Sekiyu

Legal name

キグ纳斯石油株式会社 (Kygnus Sekiyu K.K.)

Website

https://corp.kygnus.jp

Company type

Private

Founded year

1972

Operating status

Operating

Headcount range

51–100 employees

Short description

Kygnus Sekiyu is a Japanese petroleum wholesaler founded in 1972 that supplies fuel and lubricants to approximately 423 franchisee service stations nationwide, with growing diversification into EV charging, solar power, battery storage, and carbon offset fuels.

Ownership category

akta.pro rank

Product category

Petroleum Wholesale & Distribution

NAICS

Petroleum and Petroleum Products Merchant Wholesalers (4247), Petroleum Bulk Stations and Terminals (424710)

SIC

Wholesale-Petroleum & Petroleum Products (No Bulk Stations) (5172), Wholesale-Petroleum Bulk Stations & Terminals (5171)

akta.pro primary industry

Branded Fuels Wholesaling & Jobber Distribution (EUALAIAB)

Keywords

• Petroleum wholesale
• Fuel distribution
• Service station network
• Petrochemical products
• Energy services

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices8 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Supply Chain, Operations, Personnel, Marketing or Sales, Infrastructure

Revenue model

1. Petroleum Product Sales (Wholesale): Kygnus Sekiyu generates the majority of its revenue through the wholesale sale of petroleum products — including automotive gasoline, kerosene, diesel fuel, heavy fuel oils, lubricating oils, and specialty petroleum chemical products — to its network of approximately 423 franchisee service stations (特約店) nationwide. Revenue also includes direct sales of industrial fuels (灯油・軽油・A重油) to commercial customers, and lubrication oil export to Taiwan since 2015. Main supplier: Cosmo Oil Co., Ltd. (changed from previous supplier in January 2020).

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels5 records

Core offering

Kygnus Sekiyu is a Japanese petroleum wholesaler (石油元売) that supplies automotive gasoline, kerosene, diesel fuel, heavy fuel oil, and lubricating oils to a nationwide franchisee network of approximately 423 service stations, along with direct sales of industrial fuels and ancillary services such as EV charging, car leasing, and credit cards. The company positions itself as 'the wholesaler closest to the franchisee,' providing dedicated sales consulting, supply chain logistics through oil storage terminals, and operational support to affiliated dealers.

Product overview

Kygnus Sekiyu is a petroleum refiner and marketer (one of five domestic oil wholesalers in Japan) operating a nationwide network of approximately 450 service stations through affiliated dealers. The company's core products include automotive gasoline, kerosene, diesel fuel, heavy fuel oil, and various lubricating oils. Beyond traditional petroleum products, Kygnus has expanded into new energy businesses including EV charging services, agricultural solar power generation, battery storage (via M&K Energy joint venture), and carbon offset fuels. Supporting services include credit cards, car leasing, and car care support products. The company operates through three regional branches (East Japan, Chubu, West Japan) and manages logistics centers and oil terminals in Nagoya, Kanazawa, and Takasago.

Differentiator

Problem solved

Functional benefit

Products and services

• Service Station Network (サービスステーション) Network of approximately 423 affiliated Kygnus-branded service stations across Japan operated by franchisee dealers, retailing gasoline, kerosene, diesel fuel, and related petroleum products to end consumers.
• Wholesale Petroleum Products (Gasoline, Kerosene, Diesel, Heavy Fuel Oil, Lubricating Oils) Bulk wholesale supply of automotive gasoline, kerosene, diesel fuel, heavy fuel oil (A-heavy oil), and lubricating oils to franchisee service stations and direct industrial customers. Includes lubricating oil exports to Taiwan since 2015.
• Direct Industrial Fuel Sales (灯油・軽油・A重油) Direct sales of kerosene, diesel, and A-heavy oil to commercial and industrial customers, managed by the company's direct sales department.
• Kygnus Credit Card (クレジットカード) Co-branded credit card offered to Kygnus service station customers to drive loyalty and repeat visits.
• Car Leasing (カーリース / Sumacara) Car leasing service operated under the Sumacara brand, offered through the Kygnus service station ecosystem.
• Car Care Support (カーケアサポート) Vehicle maintenance and car care products and services distributed through the service station network.
• EV Charging Service Electric vehicle charging service deployed at Kygnus service stations in partnership with Plago Inc., enabling franchisees to offer EV charging alongside traditional fuel.
• Agricultural Solar Power Plant Agricultural-type solar power generation facilities co-located with farming operations.
• Carbon Offset Fuel Petroleum fuel products paired with forest-derived J-Credits to provide carbon offset value to environmentally conscious customers.

Quantifiable outcome

• Net sales of 3,477 billion yen in FY2025, with approximately 423 service stations nationwide serving as the core distribution network.

Named customers1 record

Segments1 record

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Three partnerships are on record, tiered core.

• M&K Energy (M＆K Energy)coreStrategic or Co-development Partner · 10 April 2026Kygnus Sekiyu co-founded a joint venture company with a partner to promote grid-scale battery storage systems (系統用蓄電池事業). The JV was established to advance battery storage infrastructure as part of Kygnus's diversification beyond traditional petroleum into clean energy.
• Plago (株式会社プラゴ)coreStrategic or Co-development Partner · 15 January 2025Kygnus Sekiyu entered into an agreement with 株式会社プラゴ (Plago) for a joint demonstration of EV charging services. The partnership aims to install EV chargers at Kygnus service stations, expanding the company's mobility services amid the transition to electric vehicles.
• Cosmo Oil Co., Ltd. (コスモ石油)coreTechnology or Integration · 1 January 2020Cosmo Oil became Kygnus Sekiyu's primary petroleum product supplier starting January 2020, replacing the previous supplier. Cosmo Energy Holdings also holds a 20% equity stake in Kygnus Sekiyu as a financial investor (alongside 80% shareholder San-Ai Oil).

Scale indicators5 records

Recent moves8 records

Expansion highlights5 records

Broad incumbents

• Cosmo Energy Holdings: Kygnus's primary supplier (Cosmo Oil subsidiary) and 20% shareholder. Operates Cosmo-branded service stations nationwide and is the closest comparable domestic fuel wholesaler/retailer in scale and brand architecture.
• ENEOS (JX Nippon Oil & Energy): Largest petroleum company in Japan and the dominant branded service-station operator. Directly comparable to Kygnus as a fuels wholesaler and franchise service-station network, though substantially larger and integrated upstream.
• San-Ai Oil: Parent company holding 80% of Kygnus Sekiyu and itself a petroleum wholesaler/retailer with service stations in Japan. Operates in the same downstream fuel distribution value chain with overlapping customer types.
• Idemitsu Kosan: Major Japanese petroleum company with nationwide refining, wholesaling, and service-station operations. Directly comparable as a fuel wholesaler serving branded service-station networks, with broader upstream and international exposure.

Direct peers

• Taiyo Oil: Japanese petroleum refining and marketing company with domestic fuel distribution. Comparable as a domestic oil wholesaler operating in Japan's downstream fuels market.
• Toa Oil Company: Japanese petroleum refining and sales company. Comparable to Kygnus as a domestic fuel wholesaler serving Japanese industrial and retail petroleum customers.
• Fuji Oil: Japanese petroleum company with domestic refining and petroleum product sales. Directly comparable as a domestic fuel supplier/wholesaler in the Japanese market.

Regional players

• Apex (Japan): Japan-focused petroleum distributor with service-station and commercial fuel operations. Comparable as a domestic petroleum wholesaler, though smaller and more regionally concentrated than Kygnus.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Kygnus Sekiyu