Marunouchi Innovation Partners is a private equity firm and venture capital firm. The one team member on file is in Tokyo, Japan. The known portfolio counts 10 companies, including Fervo Energy, Mainspring Energy, Amogy, Fabric8Labs, HIVED and Omnidian.
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Investment focus
Who to pitch at Marunouchi Innovation Partners
Marunouchi Innovation Partners portfolio companies (10)
- Fervo Energy
- Mainspring Energy
- Amogy
- Fabric8Labs
- HIVED
- Omnidian
- Infinitum
- Boston Metal
- GridPoint
- Ubicquia
Co-investors
Funds that share portfolio companies with Marunouchi Innovation Partners.
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About Marunouchi Innovation Partners
The firm's listing covers sectors Climate, Hardware and SaaS, and focus areas Battery, Carbon, Clean Energy and Enterprise SaaS; known deals cluster at Growth, Late-Stage and Seed.
The contact to approach at Marunouchi Innovation Partners is Yoshihide Yamauchi (Senior Manager).
Marunouchi Innovation Partners shares portfolio companies with 20 other investment firms, among them Centrica, Galvanize Climate Solutions and Devonshire Investors.
Frequently asked questions
What is Marunouchi Innovation Partners?
Marunouchi Innovation Partners is a private equity firm and venture capital firm whose one person on file is in Tokyo, Japan, with a known portfolio of 10 companies. The portfolio comes from public investment records rather than from the firm, so deals that never surfaced publicly are not in it.
What does Marunouchi Innovation Partners invest in?
Listed sectors include Climate, Hardware and SaaS; listed focus areas include Battery, Carbon, Clean Energy and Enterprise SaaS. Those tags come from the portfolio attached to the firm, so they describe what has been backed rather than a stated mandate for what comes next.
What stage does Marunouchi Innovation Partners invest at?
The known deals of Marunouchi Innovation Partners include Growth, Late-Stage and Seed rounds. Check that against your own round before reaching out: stage mismatch is the most common reason a well matched sector still goes nowhere.
Who should I pitch at Marunouchi Innovation Partners?
One person at Marunouchi Innovation Partners is on file, listed as a contact for the firm, with their own profile page.
How do I contact Marunouchi Innovation Partners?
Any email address on file for the firm is masked on this page and readable inside RaiseHunt after you create an account. The one person attached to the firm has their own page, which shows whether an address is on file for them.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal