What Taiyo Oil does

Taiyo Oil Co., Ltd. (太陽石油) is a Japanese petroleum company founded in 1964 and headquartered in Tokyo, with operations centered on a refinery in Imabari, Ehime Prefecture. The company manufactures, processes, and sells basic petrochemical products including benzene and xylene, and operates a retail network of approximately 300+ SOLATO-branded service stations across Japan, concentrated in the Shikoku, Chugoku, and Kyushu regions. Its customers are individual vehicle owners purchasing fuel for personal transport and commercial fleet operators procuring bulk fuel through dedicated service stations; the SOLATO Corporate Card supports fleet and business-volume invoicing.

The company's core operations integrate upstream refining with downstream fuel distribution. The Imabari refinery processes crude oil — including Sakhalin-2 Russian crude received in May 2026 amid Middle East supply disruptions — into gasoline, diesel, and kerosene. In March 2026 Taiyo Oil became the first Asian refiner to switch its crude pricing benchmark from Dubai to ICE Brent. Retail operations span multiple station formats under the SOLATO umbrella: SOLATO Self (self-service), SOLATO Full Service (staff-assisted), and SOLATO Express (limited quick-stop service). Service stations offer car-life support services including tire sales, oil changes, vehicle inspection (車検), car washing, KeePer coating, and — at select locations — EV charging and car rental. SOLATO CARD provides a proprietary loyalty program, complemented by the MySOLATO mobile application and integrations with major Japanese payment systems (Rakuten, d Card, PayPay, au PAY/Ponta, Merpay). In December 2024, Taiyo Oil merged with Nansei Oil Co., Ltd. to consolidate regional refining and retail scale.

Taiyo Oil's revenue model is anchored on retail fuel sales distributed through both company-operated and franchisee stations, supplemented by non-fuel retail (automotive accessories, convenience items) and ancillary services (car wash, inspection, tire, coating). The company serves two principal customer segments: individual consumers (primary) and commercial/fleet operators (secondary). Its go-to-market strategy emphasizes regional brand presence in western Japan through targeted promotional campaigns — including the SOLATO Winter Campaign in Chugoku, the Kyushu 88-store cashback program, the Shikoku Jimotoku campaign, and the SOLATO Parenting Stamp Rally — and partnerships with payment providers for point and cashback rewards. Fuel pricing is partially buffered by Japanese government subsidies, with stabilization measures in effect from March 2026.

Name

Taiyo Oil

Legal name

TAIYO OIL CO., LTD.

Website

https://taiyooil.net

Company type

Private

Founded year

1964

Operating status

Operating

Short description

Taiyo Oil Co., Ltd. is a Japanese petroleum company that operates a refinery in Imabari and a nationwide retail network of approximately 300+ SOLATO-branded service stations, selling gasoline, diesel, and kerosene to individual consumers and fleet operators across western Japan.

Ownership category

akta.pro rank

Product category

Petroleum refining and fuel retail

NAICS

Gasoline Stations (4571), Other Gasoline Stations (457120), Petroleum Bulk Stations and Terminals (424710)

SIC

Retail-Auto Dealers & Gasoline Stations (5500), Petroleum Refining (2911)

akta.pro primary industry

Retail Service Station Operations (Company-Owned & Dealer-Operated) (EUALAIAA)

akta.pro secondary industries

Non-Fuel Retail & Ancillary Forecourt Services (Car Wash, Auto Care, ATM/Lottery, Parcel Lockers) (EUALAIAJ), Commercial & Fleet Fueling (Cardlock, On-Site Tanks, Bulk Delivery) (EUALAIAD), Fuel Pricing, Loyalty & Payments Platforms (POS, Mobile Pay, Fleet Cards, Loyalty Programs) (EUALAIAK), Alternative Transportation Fuels Retail (EV Charging, Hydrogen, CNG/LNG, Biofuels Blends) (EUALAIAI)

Keywords

• Petroleum refining
• Fuel retail
• Service station network
• Automotive maintenance services
• Motor oil products

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices2 records

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Fuel Retail: Sale of petroleum products (gasoline, diesel, kerosene) through SOLATO-branded service stations across Japan. Revenue is generated through both company-operated and franchisee stations.
2. Crude Oil Processing: Refining of crude oil at company facilities for distribution through retail network.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Taiyo Oil refines crude oil at its Imabari refinery into gasoline, diesel, and kerosene, and distributes finished petroleum products directly to consumers and fleet operators through a network of approximately 300+ SOLATO-branded service stations concentrated in Shikoku, Chugoku, and Kyushu. Service stations are operated both directly and via franchisees, and offer ancillary car-life services (tires, oil changes, vehicle inspections, car wash and coating, EV charging, car rental) anchored by the SOLATO CARD loyalty program and the MySOLATO mobile app.

Product overview

Taiyo Oil Co., Ltd. operates a network of approximately 300+ SOLATO-branded service stations across Japan, offering a unified retail platform combining fuel sales with ancillary automotive services. The core offering centers on SOLATO service stations providing gasoline, diesel, and kerosene fuels, supported by the SOLATO CARD loyalty program and MySOLATO mobile application. The product portfolio extends through complementary services including tire sales, vehicle inspections, car washing (including KeePer professional coating), EV charging, and rental cars at select locations. The company also operates specialty formats including self-service (セルフ) stations for cost-conscious customers and full-service (フルサービス) stations with staff assistance. Regional promotional campaigns such as the Kyushu 88-store campaign, Shikoku four-prefecture promotions, and Chugoku area campaigns drive customer engagement alongside parenting support and community initiatives.

Differentiator

Problem solved

Functional benefit

Products and services

• SOLATO Service Stations SOLATO is the primary retail brand for Taiyo Oil's network of approximately 300+ service stations across Japan, offering fuel sales (gasoline, diesel, kerosene), car maintenance, and convenience retail through directly operated and franchisee-operated stations, including full-service, self-service, and express formats.
• SOLATO CARD Proprietary membership loyalty card that accumulates points on fuel purchases at SOLATO service stations, redeemable for discounts and exclusive promotions, for individual consumer customers.
• SOLATO Corporate Card (SOLATO法人カード) Business-oriented membership card designed for commercial fleet operators and corporate customers with volume-based pricing and invoicing features for fuel purchases at SOLATO stations.
• SOLATO Oil Series (SOLATOオイルシリーズ) Proprietary line of Taiyo Oil-branded motor oils and automotive fluids sold at SOLATO service stations for vehicle maintenance.
• EV Charging Services at SOLATO Stations Electric vehicle rapid charging facilities available at select SOLATO service stations in Japan, providing charging services for EV owners.
• Car Rental Services Car rental services offered at select SOLATO service stations, providing convenient vehicle access for customers.
• Car Wash and Coating Services Car washing services including drive-through wash, hand wash, and professional coating services such as KeePer coating treatments at designated SOLATO stations.
• Tire Sales Services Tire sales and replacement services offered at SOLATO service stations with various tire brands available.
• Vehicle Inspection Services Vehicle inspection (車検証) services at certified SOLATO stations, including both staff-assisted and self-service options.

Named customers2 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration10 records

Partnerships

Four partnerships are on record, tiered minor.

• Global Centre for Green FuelsminorStrategic or Co-development Partner · 25 June 2026Taiyo Oil participated as an industry representative in the International Conference on Sustainable Aviation Fuel organized by the Global Centre for Green Fuels in Hanoi, Vietnam. The conference brought together policymakers, aviation regulators, airlines, fuel suppliers, and technology providers to discuss SAF policy frameworks, market development, and investment opportunities.
• Vietnam AirlinesminorStrategic or Co-development Partner · 25 June 2026Taiyo Oil participated alongside Vietnam Airlines at the International Conference on Sustainable Aviation Fuel, discussing Vietnam's potential role in emerging regional SAF value chains.
• AirbusminorStrategic or Co-development Partner · 25 June 2026Taiyo Oil participated alongside Airbus at the International Conference on Sustainable Aviation Fuel discussing SAF development opportunities in Asia-Pacific.
• BoeingminorStrategic or Co-development Partner · 25 June 2026Taiyo Oil participated alongside Boeing at the International Conference on Sustainable Aviation Fuel discussing SAF policy frameworks and market development.

Scale indicators1 record

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• ENEOS Holdings: Japan's largest petroleum refining and marketing company, operating thousands of service stations nationwide and multiple refineries. Directly comparable vertically integrated model spanning refining to retail, though at far greater scale than Taiyo Oil's regional western Japan footprint.
• Idemitsu Kosan: Second-largest Japanese refiner and fuel marketer with nationwide station network and integrated petroleum operations. Comparable as a vertically integrated fuel company in Japan, though Idemitsu's scale and petrochemical exposure materially exceed Taiyo Oil.
• Cosmo Energy Holdings: Major Japanese refiner-marketer operating the Cosmo Oil brand with refineries and a nationwide service station network. Directly comparable fuel retail and refining business model; larger scale but similar vertically integrated structure.
• Showa Shell Sekiyu (ENEOS subsidiary): Former independent Japanese refiner-marketer now operating under ENEOS. Comparable vertically integrated fuel retail model under the Shell brand heritage in Japan; represents the consolidated competitive landscape Taiyo Oil operates within.
• Tonen General Sekiyu (ENEOS subsidiary): Former independent Japanese refiner now part of ENEOS, with historical Esso/ExxonMobil brand retail network. Comparable refining and retail fuel operations in Japan; illustrates consolidation pressure on smaller regional refiners.

Direct peers

• Fuji Oil Company: Mid-sized Japanese petroleum refiner and marketer with a regional footprint overlapping Taiyo Oil's. Closely comparable scale and vertically integrated upstream-to-retail structure among Japan's secondary refiner-retailers.
• Itochu Enex: Japanese petroleum products distributor and service station operator under multiple brands. Comparable downstream fuel retail and car-life service offering, though without the owned refinery that distinguishes Taiyo Oil.
• San-Ai Oil: Japanese fuel marketing and service station operator with petroleum and car-life service offerings. Comparable mid-sized fuel retail competitor to Taiyo Oil in the Japanese downstream market.

Regional players

• Kyushu Oil Co., Ltd. Regional Japanese refiner and fuel marketer focused on the Kyushu area, overlapping directly with Taiyo Oil's strongest station density region. Comparable mid-sized regional integrated refiner-retailer competing in the same geography.

Others

• Mitsui & Co. Energy: Major Japanese trading house with petroleum trading and downstream fuel marketing interests. Tangentially comparable as a sophisticated Japanese market participant in crude procurement and fuel distribution, relevant as both a competitor and potential strategic partner.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries2 records

Funding overview

Funding rounds

Investors

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

M&A

Investments2 records

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

Frequently asked questions about Taiyo Oil