Fundraising FoxIdemitsu Kosan
Corporate VCSeed–Growth
Also known as 出光興産株式会社
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Investment thesis
Idemitsu Kosan is a Japanese energy company operating refineries, oil terminals and around 6,000 service stations, alongside businesses in petrochemicals, high-performance materials, power and renewable energy, and resource development.
Source: firm website, verified Oct 1, 2026.
What they invest in
from 3 of 3 portfolio companiesCleantech ×3Energy ×3Climate Tech ×1Deep Tech ×1Logistics & Supply Chain ×1
HQs:Australia×1Japan×1United States×1
Investments · 3 tracked
founders shown can be your intro pathBy year:2026 · 12024 · 12 dated
Gyxis is a gas and energy company that handles liquefied petroleum gas (LPG) trading, distribution, and logistics across Japan and globally.
CleantechEnergyLogistics & Supply Chain
Co-investorsSumitomo Corporation
Jet Zero develops sustainable aviation fuel (SAF) projects in Australia to support regional economies, fuel security, and decarbonization in the aviation and transport sectors.
CleantechClimate TechEnergySydney, AU
Co-investorsDragonfly Enviro CapitalAirbus
Quaise Energy develops ultra-deep geothermal drilling using gyrotron-powered millimeter-wave technology to reach depths up to 20 km and temperatures up to 500°C, aiming to build superhot geothermal power plants.
CleantechDeep TechEnergyHouston, US
Matt Houde(Founder)inCarlos Araque(Founder)in
BoardColleen Calhoun(Director)inVinod Khosla(Director)William Restrepo(Director)Frohman Anderson(Director)
Co-investorsCollaborative FundFine Structures VenturesHelium-3 VenturesPrelude VenturesTechEnergy VenturesThe Engine Ventures+6 more
Portfolio news
latest coverage across their companiesQuaise Energy · citybiz.co · Aug 28, 2026
Frequently asked questions
- What stage does Idemitsu Kosan invest at?
- Idemitsu Kosan invests at the Seed, Series A, Series B, Series C, Growth stages.
- What sectors does Idemitsu Kosan focus on?
- Idemitsu Kosan focuses on Sector Agnostic.
Images
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