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Muus Climate Partners

Family office

New York · Series A–Series B · 16 people tracked

Find your way into Muus Climate Partners

1,476 people in our graph share verified history with the Muus Climate Partners team — schools, employers, funds. One of them is your warm intro.

Cyriac Parisotunlockedknows Kavita Patel · together at BlackRock (overlapped)
knows the team · via Brown University
×3knows the team · via Harvard Business School
×2knows the team · via BlackRock
×2knows the team · via Illinois Mathematics and Science Academy
×2knows the team · via International Finance Corporation
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Investment thesis

MUUS Climate Partners channels the entrepreneurial, philanthropic, and cultural endeavors of Michael Sonnenfeldt and his family. Leveraging their network and resources, the firm invests in mission-aligned, sustainability-focused opportunities intended to deliver strong, risk-adjusted returns while contributing to a brighter, more sustainable future.

Source: firm website, verified Aug 7, 2026.

Stage
Series A–Series B
HQ
New York, New York, US
Instruments
Equity
Founded
1998
AUM
$50M
Tracked investments
6

Team · 16 people

from the firm's website & public directories
Chris Wolff· Chief Investment Officer
Ben Wolkon· Partnerin
Laura DiBonaventura· Principal, Climate Investments
Alan Mantel· Investment Committee Member
Dominique Pierro· Administrative Manager
Kathleen Dunleavy· Vice Presidentin
Mary Beth Bruggeman· Philanthropic Advisor
Peter Joseph· Investment Committee Member
Rami Idriss· Investment Committee Member
Nguyen Le· Associatein

What they invest in

from 5 of 6 portfolio companies

Cleantech ×3Climate Tech ×3Energy ×3Advanced Manufacturing ×1Circular Economy ×1Consumer ×1Fintech ×1Hardware ×1

HQs:United States×4

Investments · 6 tracked

founders shown can be your intro path

By year:2024 · 22023 · 13 dated

Aepnusaepnus.comin

Aepnus is developing a sulfate recycling process that regenerates chemicals on-site from sodium sulfate waste, with a planned demonstration-scale plant designed to process over 500 tonnes of sodium sulfate annually.

Circular EconomyCleantechNew Materials

Lukas Hackl(Founder)in

Co-investorsClean Energy VenturesISVLOWERCARBONLowercarbon CapitalNextFab VenturesVoyager Partners+1 more

AmpUpampup.ioin𝕏Sep 2024 · $15M

AmpUp develops electric vehicle charging infrastructure solutions for drivers, businesses, and communities.

Climate TechConsumerEnergyMobility & TransportationSaaSSan Francisco, US

Thomas Sun(Founder)in

Co-investors2.12 AngelsAutotech VenturesConnecticut InnovationsFoothill VenturesFrontier VenturesY Combinator+2 more

Djreprintsdjreprints.com

Dow Jones Reprints & Licensing provides authorized reprint and licensing options for Dow Jones copyrighted content, handled through its agent Wright's Media.

Media & Entertainment

Co-investorsCapitalG

Energetic Insuranceenergeticcapital.cominOct 2024

Energetic Capital provides insurance and credit enhancement products for clean energy projects, using proprietary underwriting software and analytics to price project finance risk for developers, lenders, and other stakeholders.

CleantechClimate TechEnergyFintechInsurTechBoston, US

James Bowen(Executive Officer, Director, Promoter)inJeffrey McAulay(Executive Officer, Director, Promoter)

BoardJoshua Posamentier(Director)inWilliam Thorne(Director)

Co-investorsClocktower VenturesCongruent VenturesGreensoil PropTech VenturesMS&AD VenturesSE Ventures

Harvestharvest-thermal.cominOct 2023

Harvest Thermal makes an all-in-one home heating, cooling, and hot water system that pairs an air-to-water heat pump with an insulated thermal storage tank and optimization software to shift electricity use to cheaper, cleaner periods.

Advanced ManufacturingCleantechClimate TechEnergyHardwareKensington, US

JanePierreKen Munson(Executive Officer, Director)inElisabeth Jane Melia(Executive Officer, Director)

Co-investors37 AngelsAstiaClimate Impact CapitalCool Climate CollectiveEarth FoundryEnergy Foundry+4 more

Nth Cyclenthcycle.comin

Critical minerals midstream refining company building modular technology to convert industrial scrap, black mass and primary feeds into refined nickel, cobalt, copper and rare earth products for Western supply chains.

Burlington, US

Megan O'Connor(Co-Founder and CEO)inChad D. Vecitis, PhD(Co-Founder and Chief Scientist)Desirée Plata, PhD(Co-founder & Science Advisor)Gabi Knesel(Executive Officer)

BoardRaffi Freeman(Executive Officer)inEdward Meir(Director)

Co-investorsAutodesk FoundationBroadscaleClean Energy VenturesVoLo Earth VenturesClean Energy VentureEquinor Ventures+1 more

Portfolio news

latest coverage across their companies

Frequently asked questions

What stage does Muus Climate Partners invest at?
Muus Climate Partners invests at the Series A, Series B stages.
What sectors does Muus Climate Partners focus on?
Muus Climate Partners focuses on Cleantech, Climate Tech, Energy, Impact & Social Good, New Materials.
Where is Muus Climate Partners located?
Muus Climate Partners is headquartered in New York, US.
Who does Muus Climate Partners co-invest with?
Muus Climate Partners most often shares deals with Autodesk Foundation, Broadscale, CapitalG, among 5 tracked co-investors.

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