/Investor DB

Helios Climate Ventures — Full Portfolio

22 tracked investments · listed companies and verified rows first

Factorialenergyfactorialenergy.comin𝕏NASDAQ: FAC

Factorial develops solid-state batteries for electric vehicles, supplying prototype and sample cells to global automotive OEMs for testing.

CleantechDeep TechEnergyHardware

Siyu Huang(Founder)inAlex Yu(Founder)inPeter Yu(Chairman and Chief Executive Officer)Rafael de Luque(Chief Financial Officer and Director)

Co-investorsFraser McCombs CapitalGVP ClimateSnatched VenturesWAVE Equity Partners

zinc-fivezincfive.comin𝕏✓ verified

ZincFive develops nickel-zinc (NiZn) batteries that provide backup and uninterruptible power for mission-critical applications across multiple industries and infrastructures.

CleantechEnergyHardwareTualatin, US

Tim Hysell(Co-founder & Strategic Advisor)inTod Higinbotham(CEO)inMarty Heimbigner(Chief Financial Officer)

BoardMark Perutz(Director)inJesse Johnson(Director)inMarc van den Berg(Director)

Co-investorsClimate InvestmentAlpha Ascent Ventures LlcAngeleno GroupBraemar Energy VenturesDBL PartnersJapan Energy Capital+1 more

Aimipamp.tech

Matanya Horowitz(Founder)in

Co-investors8VC

Alsym Energyalsym.comin𝕏

Alsym Energy develops non-flammable, high-performance sodium-ion batteries for energy storage applications.

AI & Machine LearningCleantechDeep TechEnergyMalden, US

Mukesh Chatter(Co-Founder and CEO)inDr. Kripa Varanasi(Co-Founder, Alsym Energy and Professor of Mechanical Engineering, MIT)inDr. Nikhil Koratkar(Alsym Co-Founder and Professor of Mechanical Engineering, RPI)

Co-investorsGeneral CatalystInnova Capital Partners, LLC

Ambient Photonicsambientphotonics.comApr 2022

EnergyMill Valley, US

Bates Marshall(Executive Officer, Director)Chris Hill(Director)

BoardSasha Brown(Director)

Co-investorsAt One VenturesEcosystem Integrity FundFine Structures VenturesRegeneration.VCI Squared CapitalSustainable Future Ventures+1 more

Aqua Membranesaquamembranes.comin𝕏

Aqua Membranes makes precision-printed elements for industrial reverse osmosis (RO) systems, designed to increase production, lower energy costs, reduce cleaning cycles, and improve recovery without retrofits.

Advanced ManufacturingCleantechHardwareNew MaterialsAlbuquerque, US

Rodney Herrington(Founder)inCraig Beckman(CEO)inChristopher Kurth(Chief Technology Officer)inRick Sanders(Director)Michael Reardon(Director)Stuart Schoenmann(Director)

Co-investorsBURNT ISLAND VENTURESClean Energy VentureClean Energy VenturesMicron VenturesNovaCapitalCycle Capital

Coreshellcoreshelltech.comin𝕏

CoreShell Technology develops metallurgical silicon materials for electric vehicle batteries as a more economical and scalable alternative to synthetic silicon.

CleantechEnergyNew Materials

Co-investorsBaruch Future VenturesBlue Bear VenturesEntrada VenturesFoothill VenturesTrousdale VenturesZeon Ventures

Gdinrggdinrg.comin

Graphenix Development Inc.

CleantechEnergyNew MaterialsRochester, US

Rob Anstey(Founder & CEO)inSteve Wolk(COO)inSung Lim(CTO)inJennifer(CFO)

Liminal Insightsliminalinsights.comin𝕏

Liminal Insights uses ultrasound-based technology to provide quality control and inspection for battery cell R&D and manufacturing, targeting battery cell manufacturers and automotive OEMs.

Advanced ManufacturingAI & Machine LearningCleantechDeep TechEnergyHardwareBay Area, US

Andrew Hsieh(Executive Officer, Director)inShaurjo Biswas(CEO, CTO, & Co-Founder)inDan Steingart(Co-Founder)inBarry Van Tassell(Co-Founder)inMinhye Mueller(COO & CFO)inAlfred Lam(Director)in

Co-investorsArcTern VenturesChrysalixEcosystem Integrity FundGood Growth CapitalISVLG Technology Ventures+4 more

Maxterialmaxterial.cominJun 2024 · $8M

Maxterial develops advanced chemicals and coatings, including a coating platform designed to protect surfaces against wear, heat, and corrosion.

Advanced ManufacturingDeep TechNew Materials

Co-investorsAnthropocene VenturesDellin InvestmentsIdeashipBreakout LabsUP2398

ProductionProproduction.proSeed · Jul 2017 · $1M

ProductionPro is an entertainment technology platform that connects the latest script, breakdown, and media in one hub for film, television, and theatre productions.

Future of WorkMedia & EntertainmentSaaS

Co-investorsDisney Accelerator

Solarlytics [Exited 2025]solarlytics.netinFeb 2015

Solarlytics develops a smart IoT platform that increases energy output at large solar installations by 3-10% through string-level performance optimization and real-time fault detection.

AI & Machine LearningCleantechEnergyIoTWalnut Creek, US

Thomas Mart(MD Europe, Co-founder)inPeter Cohn(Executive Officer)Dale E Fredericks(Executive Officer, Director)Robert P McNamara(Executive Officer, Director)Douglas M Raymond(Executive Officer, Director)

BoardRobert C Roeper(Director)

Co-investorsInnova Capital Partners, LLCBaruch Future VenturesWAVE Equity Partners

Summit Nanotechsummitnanotech.comin𝕏

Summit Nanotech develops an integrated Direct Lithium Extraction (DLE) platform called denaLi, combining a proprietary multi-column system, its eLivate sorbent, and predictive multi-physics modeling to extract lithium from brine with low water use and high recovery.

CleantechEnergyNew MaterialsCalgary

Amanda Hall(Director, Executive Officer)inJoe Arencibia(Executive Officer, Director)inVivian Farris(Executive Officer)inJeremy Patt(Executive Officer)inCheri Corbett(Director)inJoseph Lowry(Director)

Co-investorsForesightLG Technology VenturesRBCxThird DerivativeXoraCapricorn Investment Group+3 more

Summitlithiumsummitlithium.tech𝕏

Summit Lithium develops direct lithium extraction (DLE) technology to produce lithium at lower cost and with reduced environmental impact compared to conventional methods.

CleantechDeep TechEnergyNew MaterialsDenver, US

TechsoMedtechsomed.cominSeed · Jan 2018 · $1M

TechsoMed develops BioTrace, an FDA-cleared software platform for image-guided minimally invasive cancer therapy that uses AI to provide real-time 3D visualization, tumor margin control, needle path planning, and post-ablation tissue response prediction.

AI & Machine LearningDigital HealthMedical Devices

Co-investorsNextLeap VenturesAxil Capital

Other

Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.

AMPEmerjGamiteeGDIGreen OnyxLiminalTrusted Health

Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.