Idemitsu Kosan
Corporate VCSeed–Growth
Also known as 出光興産株式会社
Investment thesis
Idemitsu Kosan is a Japanese energy company that refines and supplies fuels through a network of refineries, oil depots, and around 6,000 service stations, and also operates in petrochemicals, functional materials, renewable and thermal power generation, and resource development.
Source: firm website, verified Aug 3, 2026.
What they invest in
from 1 of 1 portfolio companiesCleantech ×1Deep Tech ×1Energy ×1
HQs:United States×1
Investments · 1 tracked
founders shown can be your intro path
Quaise Energy develops superhot geothermal drilling technology using millimeter-wave powered drilling to access deep geothermal energy sources at unprecedented depths and temperatures for large-scale clean power generation globally.
CleantechDeep TechEnergyHouston, US
Carlos Araque(Executive Officer, Director)Matt Houde(Founder)in
BoardColleen Calhoun(Director)inVinod Khosla(Director)William Restrepo(Director)Frohman Anderson(Director)
Co-investorsCollaborative FundFine Structures VenturesHelium-3 VenturesPrelude VenturesTechEnergy VenturesXplorer Capital+5 more
Portfolio news
latest coverage across their companies
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.
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