Marunouchi Innovation Partners

About Marunouchi Innovation Partners

Marunouchi Innovation Partners is a venture capital firm based in Japan, focusing on Series A stage investments. The fund actively supports founders building innovative solutions in AI/ML, Climate & Sustainability, providing strategic guidance and capital to help startups scale.

Investment Focus

Location / RegionJapan

Funding StageSeries A

Industry Focus

Ai Ml

Climate Sustainability

Investor Signals Profile

active

Sweet Spot

Growth-stage climate tech founder scaling globally

climate tech

carbon neutral

growth capital

global markets

deep tech

Bullish Signals

Mitsubishi Corp as main sponsorexternal

London branch opening 2026external

Invested Fervo Energy, Fabric8Labs, Ubicquiaexternal

Active follow-on investments ongoingexternal

3-shareholder JV — diversified backingwebsite

Wide climate tech scope — no narrow nichewebsite

Marunouchi Climate Tech Growth Fund activewebsite

ESG policy formally in placewebsite

Contrarian Signals

Corporate JV — strategic agenda may applyexternal

Japan-HQ, global reach still emergingexternal

Founder Do's

Have cutting-edge climate tech

Ready to scale commercially

Seeking growth-stage capital

Open to global market access

Align with carbon-neutral 2050

Founder Don'ts

Early pre-revenue stage

Non-climate tech sectors

No global scaling ambition

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Fund Overview

Fund Size$744M

Saves0

Website

Key People

Chiro Miyoshi