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Marunouchi Innovation Partners

Marunouchi Kitaguchi Building 12F 6-5, Marunouchi 1-Chome, Chiyoda-ku, Tokyo, 100-0005, Japan

Overview

Assists social adoption of new climate technology.

Founded

2023

Deals · 12mo

4

Links

Website

Stage focus

Series B
Series E

Geographic focus

United Kingdom
United States

Sector focus

—

Investment portfolio

13rounds
NAMEDATESIZE
Emerald AI
Aug 2026Participated
$150 MSeries A
Ubicquia
Feb 2026Led
$106 MSeries D
Fervo Energy
Dec 2025Participated
$462 MSeries E
Fabric8Labs
Nov 2025Participated
$50 MOther Equity
HIVED
Jul 2025Participated
$42 MSeries B
Omnidian
Apr 2025Participated
$87 MOther Equity
Mainspring Energy
Apr 2025Participated
$258 MSeries F
GridPoint
Mar 2025Led
$45 MOther Equity
Amogy
Jan 2025Participated
$56 MOther Equity
Infinitum
Jul 2024Led
$35 MSeries E
Fervo Energy
Feb 2024Participated
$244 MOther Equity
Boston Metal
Jan 2024Led
$20 MSeries C
Emerald AI
Aug 2026Participated
$150 MSeries A
Ubicquia
Feb 2026Led
$106 MSeries D
Fervo Energy
Dec 2025Participated
$462 MSeries E
Fabric8Labs
Nov 2025Participated
$50 MOther Equity
HIVED
Jul 2025Participated
$42 MSeries B
Omnidian
Apr 2025Participated
$87 MOther Equity
Mainspring Energy
Apr 2025Participated
$258 MSeries F
GridPoint
Mar 2025Led
$45 MOther Equity
Amogy
Jan 2025Participated
$56 MOther Equity
Infinitum
Jul 2024Led
$35 MSeries E
Fervo Energy
Feb 2024Participated
$244 MOther Equity
Boston Metal
Jan 2024Led
$20 MSeries C
13
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Insights

Time horizon

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Deal Distribution

Marunouchi Innovation Partners: 13 funding rounds are recorded in the selected participation categories.All available history.
Marunouchi Innovation Partners: 13 funding rounds are recorded in the selected participation categories. All available history
Round typeLed dealsParticipated deals
Series A01
Series B02
Series C+32
Other Equity14

Monthly Deal Activity

Marunouchi Innovation Partners: 13 deals are recorded across 41 months.All available history.
Marunouchi Innovation Partners: 13 deals are recorded across 41 months. All available history
MonthDeals
Jun '231
Jul '230
Aug '230
Sep '230
Oct '230
Nov '230
Dec '230
Jan '241
Feb '241
Mar '240
Apr '240
May '240
Jun '240
Jul '241
Aug '240
Sep '240
Oct '240
Nov '240
Dec '240
Jan '251
Feb '250
Mar '251
Apr '252
May '250
Jun '250
Jul '251
Aug '250
Sep '250
Oct '250
Nov '251
Dec '251
Jan '260
Feb '261
Mar '260
Apr '260
May '260
Jun '260
Jul '260
Aug '261
Sep '260
Oct '260

Sector Breakdown

Marunouchi Innovation Partners: Clean Energy & Sustainability is the largest displayed sector by deal count (10 deals).All available history.

A deal can appear in multiple sectors, so sector totals may overlap. Capital represents disclosed total round sizes, not fund cheque sizes.

Marunouchi Innovation Partners: Clean Energy & Sustainability is the largest displayed sector by deal count (10 deals). All available history
SectorDeals
Clean Energy & Sustainability10
Real Estate & Construction4
Networks, Cloud & Communication3
Manufacturing3
Space & Frontier Tech3
Enterprise Software2
AI & Machine Learning2
Data, Analytics & IT2
Transportation & Logistics2
AR/VR1

Deal Size Distribution

Marunouchi Innovation Partners: 13 rounds have a disclosed size in the displayed size bands.All available history.

Undisclosed round sizes are excluded. Capital represents total round sizes, not fund cheque sizes.

Marunouchi Innovation Partners: 13 rounds have a disclosed size in the displayed size bands. All available history
Round size band (USD)Deals
<$5M0
$5M-$10M0
$10M-$25M2
$25M-$50M3
$50M-$100M3
$100M-$250M3
$250M-$500M2
$500M-$1B0
$1B+0

Deals By Geography

Marunouchi Innovation Partners: United States has the largest recorded deal count among the displayed regions (12 deals).All available history.

Top 2 of 2 regions; European countries are grouped as Europe.

Marunouchi Innovation Partners: United States has the largest recorded deal count among the displayed regions (12 deals). All available history
RegionDeals
United States12
Europe1
Marunouchi Innovation Partners: 20 co-investors are shown, with Data Collective sharing 4 recorded deals.All available history.

Co-Investors

Bubble size = shared deals

Click a bubble to open that fund in a new tab.

Shows up to 20 co-investors ranked by shared deals. Deals may be shared with multiple funds, so rows overlap. Capital is total round size, not fund cheque size.

Marunouchi Innovation Partners: 20 co-investors are shown, with Data Collective sharing 4 recorded deals. All available history
Co-investorShared deals
Data Collective4
Liberty Mutual Investments3
Mitsubishi Heavy Industries3
Aramco Ventures (Saudi Aramco Energy Ventures)2
B Capital Group2
Capricorn Investment Group2
Congruent Ventures2
Devon Energy2
Impact Science Ventures2
Mercuria2
Sabanci Climate Ventures2
Temasek2
67 Capital1
Activate Capital1
ADVentures1
AllianceBernstein1
Alumni Ventures1
Amazon1
AP Ventures1
Atacama1

Investment Strategy

Marunouchi Innovation Partners: Led accounts for 31% and participating for 69% of round participation.All available history.
Marunouchi Innovation Partners: Led accounts for 31% and participating for 69% of round participation. All available history
CategoryDeals (count)Share (%)
Led431%
Participating969%
Marunouchi Innovation Partners: Single-lead accounts for 50% and co-led for 50% of lead dynamics.All available history.
Marunouchi Innovation Partners: Single-lead accounts for 50% and co-led for 50% of lead dynamics. All available history
CategoryDeals (count)Share (%)
Single-lead250%
Co-led250%

Team

Ichiro Miyoshi

CEO & CIO