Echo River Capital

Digital Paani operates wastewater treatment optimization technology for buildings and factories, helping them achieve water neutrality and comply with environmental standards.

AI & Machine LearningCleantechClimate TechImpact & Social GoodIoTIndia, IN

Rajesh Jain(Founder)inMansi Jainin

Co-investorsDEDeVCPEpeercheque

WaterSmart provides a digital engagement platform for water, gas, and electric utilities and energy retailers to modernize customer billing, engagement, and data analytics.

EnergyEnterprise SoftwareSaaSSan Francisco, US

Robin Gilthorpe(Executive Officer, Director)

BoardSBSteve Bennet(Director)inThomas Harvey(Director)SWSteve Westly(Director)inWill Rosenzweig(Director)

Board seatPYPeter Yolles· per SEC Form D · $7M raise · filed Apr 2015

Co-investorsSASand Hill AngelsTHThe Westly Group

2050 Accelerator is an accelerator program based in Dublin, Ireland that supports early-stage tech startups addressing sustainability challenges aligned with the EU's 2050 climate goals.

CleantechClimate TechImpact & Social GoodDublin, IE

ACV Capital is an investment firm based in Indonesia and ASEAN that provides capital and strategic support to startups, with a particular focus on impact investing, climate tech, and supporting women-led and MSME-focused companies.

Climate TechFintechImpact & Social GoodSector AgnosticJakarta, ID

Co-investorsBRBRI VenturesQUQuona Capital

Electrochemical water purifier using patent-pending technology to remove contaminants including PFOA.

Mansfield, US

Julie Bliss Mullen(Executive Officer, Director)LHLeanne Hersey(Founder)inPamela Lynch(Executive Officer)Orren Schneider(Executive Officer)

BoardJiten Manglani(Director)TFTom Ferguson(Director)in

Co-investorsDCDCVC (Data Collective)HGHG VenturesMAMassVenturesTHThe Alchemy FundBUBURNT ISLAND VENTURES

Aclarity develops proprietary technology to break down PFAS (per- and polyfluoroalkyl substances) compounds using electricity, offering an alternative to traditional disposal methods that involve landfilling or incineration.

CleantechClimate TechHardware

Michael Shaw(President and Chief Executive Officer)in

Co-investorsBUBURNT ISLAND VENTURESHGHG VenturesMAMaroon Venture Partners FundMAMassVentures

Activate builds community and programs to help scientists and engineers commercialize breakthrough research into real-world solutions.

AgTechAI & Machine LearningDeep TechEdTechImpact & Social GoodNew MaterialsBerkeley, US

LMLeila Madrone(Executive Vice President, New Founder Pathways)inSMSarah Morrill(Executive Vice President, Innovation Lab)inSteven Tran(Executive Vice President, Finance & Contracts)in

Co-investorsGRGrantham FoundationAUAutodesk Foundation

Active Membrane develops electro-active desalination membranes that reduce scaling and fouling to lower costs and environmental impact of fresh water production.

CleantechDeep TechHardwareNorthridge, US

RWRick Wolfen(Co-Founder & Clean-Tech Investor, Board Member)Dr. Eric Hoek(Co-Founder & Board Member)Dr. David Jassby(Co-Founder, Advisor, & Co-Inventor)AEArian Edalat(Executive Officer, Director)inShahrouz Parson Vazan(Executive Officer)

BoardBenjamin Tam(Director)

Ag Startup Engine is an investment and support organization that connects early-stage agricultural startups with investors and industry partners.

AgTechIowa, US

JHJoel Harris(Executive Director)inCHColin Hurd(Co-Director)inKKKevin Kimle(Co-Director)in

Co-investorsNENext Level Ventures

Bluelab manufactures pH, electrical conductivity (EC), and temperature measurement meters, pens, and controllers designed for hydroponics and soil monitoring.

AgTechHardwareIoT

Co-investorsOROriens Capital

AgMonitor provides a SaaS platform with three modular features for crop and ranch management: PumpMonitor for water management, RanchMonitor for energy optimization, and CropMonitor for irrigation planning and crop yield improvement.

AgTechAI & Machine LearningData & InfrastructureSaaSSan Mateo, US

Olivier Jerphagnon(Founder)in

Co-investorsINInvariantes Fund

Agnition finds, builds, and invests in early-stage agricultural technology ventures aimed at helping farmers and growers bring practical solutions to market.

AgTechClimate TechChristchurch, NZ

JVJasper van Halder(CEO)in

Co-investorsNZNZ Growth Capital Partners

AirMiners is a community and accelerator organization that gathers entrepreneurs, scientists, and innovators to develop and commercialize carbon dioxide removal solutions.

CleantechClimate TechDeep TechImpact & Social Good

TJTito JankowskiinMEMatthew Eshedin

Co-investorsAVAvila

Alchemist is an accelerator that supports a global community of founders through investment, mentorship, and operational guidance across multiple regions.

AI & Machine LearningDeep TechEnterprise SoftwareSector AgnosticSan Francisco, US

RBRavi Belani(Founder & Chairman)in

Co-investorsSISimya VCDSDSG Consumer PartnersIPIPVUNUnilever Ventures

The University of Texas at Austin is the state's flagship public university, offering undergraduate and graduate education alongside research across fields such as health care and industry.

EdTechAustin, US

Blue Startups is a Honolulu-based accelerator that runs a 12-week, mentor-driven program offering up to $250,000 in seed funding, mentorship, and investor introductions to scalable technology startups, with a founder priority on Hawaii, female, and East-West companies.

Sector AgnosticHonolulu, US

HRHenk Rogers(Co-founder)inMRMaya Rogers(Co-founder)inCFChenoa Farnsworth(Co-founder & Managing Partner)in

Builders Vision is an impact-focused investment platform associated with Lukas Walton that uses a "systems approach," directing capital toward reform-minded organizations to shift entire sectors toward more sustainable and impact-friendly outcomes.

Impact & Social GoodSector Agnostic

LWLukas Walton(Founder)in

Co-investorsCICirculate CapitalCLClean Energy Ventures

Burnt Island Ventures is a venture capital firm that invests in water technology startups and entrepreneurs developing next-generation solutions for the water sector.

CleantechClimate Tech

Tom Ferguson(Founder and Managing Partner)Christine E. Boyle(Partner)Steve Kloos(Partner)

Co-investorsCLClean Energy VenturesSASalica Investments

Cleantech Open is a non-profit business accelerator for early-stage clean technology startups, providing training to entrepreneurs building clean and sustainable technologies.

CleantechClimate TechImpact & Social Good

Co-investorsINInfo Edge Ventures

CREW is a Yale spinout that adds calcium carbonate (ground limestone) to wastewater treatment plants to intensify biological treatment, cut chemical costs, and permanently remove carbon dioxide.

CleantechClimate TechDeep TechNew Haven, US

Joachim Katchinoff(Co-founder & CEO)inNPNoah Planavsky(Co-Founder & Scientific Advisor)in

Co-investorsAPAP VenturesBUBURNT ISLAND VENTURESCOConnecticut InnovationsCOCounteract OneEMEmerald Technology Ventures AgSOSony Ventures Corporation+2 more

Citylogix develops AI-powered pavement condition assessment and enterprise asset management software for municipalities and infrastructure owners across North America.

AI & Machine LearningCircular EconomyCleantechClimate TechConstruction TechGovTechSaaSMississauga, CA

Co-investorsEMEmerald Technology Ventures Ag

Elemental Impact is a nonprofit investment firm that provides catalytic capital, coaching, and network support to early-stage companies developing climate and sustainability technologies across energy, industry, transportation, built environment, water, food, agriculture, and nature.

CleantechClimate TechEnergyImpact & Social Good

Epic Cleantec develops modular water reuse systems for buildings to recycle onsite wastewater in sustainable construction projects.

Circular EconomyCleantechClimate TechConstruction TechPropTech

ATAaron Tartakovsky(Founder)in

Co-investorsJ-J-ImpactJ-J-Ventures

MassChallenge is a startup accelerator that runs programs connecting founders to corporates, customers, regulators, funders, and expert mentors.

Climate TechHealthtechImpact & Social Good

Glanris produces designer biochar (Biocarbon) made from rice waste for use as a soil amendment, a filler in materials like asphalt, concrete, and drywall, and as a water and air filtration medium.

AgTechCircular EconomyCleantechClimate TechNew MaterialsMemphis, US

Anastasia Eagle(CMO & Co-Founder)Andrew Forsdick(CFO (Fractional))Damian Russell(Head of Operations)inBryan M. Eagle III(CEO & Founder)Thomas W. Volinchak(Director)

BoardJBJan Bouten(Director)in

Co-investorsCOCool Climate CollectiveINInnova Memphis, Inc.INInnova

Gybe provides watershed-scale water quality monitoring.

CleantechClimate TechImpact & Social GoodPortland, US

Omar Zurita(Founder)

Co-investorsONOne Planet GroupRORockies Venture Club

Hohonu builds low-cost water level sensors that transmit real-time data on tides, flooding, and sea-level rise for coastal communities and water monitoring teams.

Climate TechGovTechHardwareIoT

BGBrian Glazer(Founder)inSLStanley Lio(Co-founder / Engineer)

Co-investorsBLBlue StartupsTETELUS Pollinator Fund for Good

Imagine H2O is an innovation platform that connects investors, founders, and corporate partners to support startups addressing water infrastructure and climate challenges.

CleantechClimate TechImpact & Social Good

Scott

Innospark is a venture capital firm that invests in AI-native companies and founders building technology-driven solutions across enterprise, healthcare, and physical-world applications.

AI & Machine LearningDeep TechEnterprise Software

DVDr. Venkat Srinivasan(Founder and Managing Director)inDVDeepak Verma(Operating Partner)in

Co-investorsINInnospark VenturesTSTSVCY Y Combinator

Irrigreen manufactures smart in-ground sprinkler systems for residential lawns that use mapping technology to reduce water waste by up to 50% compared to traditional irrigation.

AgTechHardwareIoT

Co-investorsBUBURNT ISLAND VENTURESMFMFV PartnersSASand Hill AngelsTATamiami AngelULUlu VenturesANAnorak Ventures+1 more

J-Ventures is an investment platform or advisory network that lists prominent technology executives, venture capitalists, and business leaders as investors and advisors.

Sector AgnosticPalo Alto, US

Co-investors2B2B.VCRHRhodium

Kairos Space Tech publishes research and experiments on hydroponic nutrient solution chemistry, examining how factors such as dissolved oxygen, pH, and oxidation-reduction potential affect fertilizer salt solubility and nutrient stability.

AgTech

A philanthropic nonprofit foundation established in honor of Susan Cohan, focused on colon cancer awareness and support for those affected by the disease in the United States.

Impact & Social GoodLutherville, US

Mana Impact directs capital and resources toward social and environmental solutions by building relationships between investors and impact-focused organizations.

AgTechCircular EconomyClimate TechImpact & Social Good

ManholeMetrics designs and deploys wastewater level sensors paired with a monitoring software platform (Porthole) that give water utilities real-time visibility into sewer and stormwater networks.

CleantechClimate TechIoT

Will Dubin(Founder/CEO)in

Co-investorsAVAvonmore DevelopmentsBRBritish Design FundSYSyndicateRoom

MassCEC is a venture capital and investment fund that commits $50 million through 2030 to support climatetech companies, with a focus on hard technologies that reduce greenhouse gas emissions, advance clean energy, and build community climate resilience.

CleantechClimate TechEnergyBoston, US

Co-investorsCLClean Energy Ventures

Natural Ventures is a venture capital and investment firm focused on water technology, agriculture, and energy transition sectors.

AgTechCleantechEnergyImpact & Social Good

Mark Jenkins(Managing Partner)inMaarten ter Keurst(Managing Partner)in

New Climate Ventures is a venture capital firm focused on backing emerging technologies in materials, energy, and circular economy sectors that can achieve cost parity with incumbent solutions while supporting resilient, efficient, and secure supply chains.

Circular EconomyClimate TechNew Materials

Open Hydro develops technology to assess and mitigate greenhouse gas emissions from freshwater systems, including reservoir emissions, providing climate mitigation and resilience insights for hydropower utilities and water industries.

CleantechClimate TechEnergySaaSLondon, GB

Co-investorsCACarbon13SUSustainable Ventures

PAGE Technologies provides real-time environmental monitoring using solid-state sensors and AI analytics to deliver continuous visibility into chemical, physical, and biological signals for operational and regulatory compliance.

AgTechAI & Machine LearningDeep TechHardwareIoT

PureTerra is a venture capital or investment firm focused on water technology companies with disruptive innovations and positive environmental impact.

CleantechClimate TechImpact & Social Good

Co-investorsEUEuropean Investment FundINInvest-NL

RareBreed Ventures is a pre-seed venture capital fund that invests in founders primarily located outside of major tech ecosystems, writing checks of up to $250K as one of the first investors.

Sector Agnostic

M(McKeever (Mac) Conwell,II(Founder)in

A tool that helps businesses evaluate and compare packaging options by analyzing costs, carbon emissions, and material use in real time.

Circular EconomyCleantechClimate TechData & InfrastructureLogistics & Supply ChainSaaS

EREmily Rogers(Founder)in

Sage Hill Capital is a wealth management and financial advisory firm that helps clients pursue their financial goals through an unbiased asset allocation process.

Fintech

Shower Stream develops IoT-enabled showerheads that reduce water and energy consumption for hospitality properties while providing operational data analytics.

CleantechEnterprise SoftwareHardwareIoTPropTech

Co-investorsBUBURNT ISLAND VENTURESNENew Stack VenturesNENewlin VenturesSWSWAN Impact NetworkTRTrue Wealth VenturesNONorth Texas Angel Network

Solidec builds autonomous electrolyzer-based generators that use air, water, and electricity to produce essential chemicals on site and on demand, removing supply-chain, delivery, and storage burdens.

Advanced ManufacturingCleantechClimate TechNew Materials

Ryan(Co-founder & CEO)inYang(Co-founder & CTO)inHaotian(Co-founder & Chief Scientist)in

Co-investorsNENew Climate VenturesNENew York AngelsCHChevron Technology VenturesCOCollaborative FundECEcosphere VenturesPLPlug and Play Ventures+1 more

MCJ Collective is a venture capital firm that invests in founders building companies in energy, climate, and industrial technology.

Co-investorsDADay One VenturesMOMOL Switch

Sustainable Ocean Alliance supports emerging ocean leaders and startups through grants, mentorship, investment access, and community, including a year of online programming and travel to ocean conferences.

CleantechClimate TechImpact & Social Good

DVDaniela V. Fernandez(Founder)in

SWAN Systems provides web-based software for irrigation management, helping farmers optimize water and nutrient application to increase yields and reduce costs.

AgTechClimate TechSaaS

THTim HydeinIGIvor GaylardinRCRod Campbellin

Co-investorsDODoon CapitalPUPureTerra Ventures

The Water Council is a Milwaukee-based organization that convenes water industry leaders, companies and innovators to advance water technology solutions and sustainability practices.

CleantechClimate TechImpact & Social GoodMilwaukee, US

RMRich Meeusen(Co-founder)PJPaul Jones(Co-founder)

Transition is a venture capital firm that backs founders building full-stack companies combining hardware, software, and frontier science in areas such as AI, energy, robotics, and climate resilience.

Climate TechDeep TechEnergy

Ulu Ventures is a seed-stage venture capital firm that finds and funds early-stage founder teams, using a data-driven investment approach with an emphasis on diversity.

Sector Agnostic

CKClint Korver(Founder)inMRMiriam Rivera(Founder)in

Co-investors50500 GlobalFAFarvatn VentureINInvariantes FundPIPivotal Ventures

Uravu develops water extraction technology using proprietary liquid salts to harvest moisture from air, serving water-stressed regions with scalable on-site and industrial solutions.

Advanced ManufacturingCleantechClimate TechDeep TechHardwareBangalore, IN

Co-investorsAMAmritam HoldingsANAnicut CapitalJIJITO Angel NetworkRORocketship.vcSPSpeciale Invest

Verdi provides hardware controllers and sensors that add automation and remote control to existing farm irrigation systems, letting growers manage valves, pumps, and drip lines at the block, row, or plant level.

AgTechAI & Machine LearningClimate TechHardwareIoTSaaS

Co-investorsBABaker Hall CapitalRARareBreed VenturesCYCyan VenturesDADangerous VenturesJEJetstreamPOPonderosa Ventures+4 more

VODA.ai provides an AI-based decision support platform that analyzes water pipe and service line health to predict failures, helping water utilities plan maintenance, reduce water loss, and prevent catastrophic pipe failures.

AI & Machine LearningCleantechSaaSBoston, US

JFJim Fitchett(Co-founder of VODA.ai)inGDGeorge Demosthenous(Co-founder)inGeorgios Demosthenous(Executive Officer, Director)

Co-investorsCRCRH Ventures

A Berlin-based water data company developing optical and AI-powered technology to measure water quality in real time.

AI & Machine LearningCleantechClimate TechIoTBerlin, DE

Heather Tugaoen(Ph.D., PE)Leonel Aguilar

Co-investorsTOToba Capital

Waterplan provides a platform that assesses water risk for industrial and consumer goods companies by combining operational data with satellite imagery, then recommends mitigation strategies ranging from infrastructure upgrades to ecosystem-based approaches.

AI & Machine LearningClimate TechEnterprise SoftwareSaaSSan Francisco, US

JIJose Ignacio Galindo(Founder)inNWNicolas Wertheimer(Founder)in

Co-investorsANAngel Collective Opportunity FundCECemex VenturesCOCool Climate CollectiveGIGiant Ventures Global LlpJEJetstreamSUSur Ventures+6 more

The WET Center at California State University, Fresno is an incubator and resource hub supporting startups and entrepreneurs in the Central Valley's food, energy, and agriculture industries.

AgTechFoodTechImpact & Social GoodFresno, US