Aaron Fyke
InvestorFounder and Managing Partner at Thin Line Capital
Pasadena, California, United States
About
A three-decade investor, engineer, and entrepreneur who cofounded six companies including two unicorns (Heliogen and Energy Vault) across fuel cell, ocean power, concentrating solar, and grid-scale energy storage. Previously a partner at Starfish Ventures and developer of a $10M energy XPRIZE; holds MBA/MSME from MIT and a BEng from University of Victoria.
Contact· self-published, not guessed
Experience
- Thin Line CapitalFounder and Managing Partnercurrent2017 — presentPasadena, CA
- RekenAdvisorcurrent2024 — present
- OthersphereInvestorcurrent2023 — present
- Operant NetworksInvestorcurrent2022 — present
- SunairioInvestorcurrent2022 — present
- OptiwattInvestorcurrent2021 — present
- divirodInvestorcurrent2020 — present
- VoltaiqInvestorcurrent2020 — present
- Kevala, Inc.Investorcurrent2019 — present
- FlickCofounder/Advisorcurrent2018 — presentPasadena, California, United States
- Strategic News ServiceInnovation Ambassador2020 — 2024
- Energy Vault SAAdvisor2017 — 2022Pasadena, CA
- Heliogen Inc.Advisor2016 — 2021Pasadena
- Heliogen Inc.CEO/Cofounder2014 — 2015Pasadena
- MicaSenseCofounder2014 — 2019Pasadena
- USC Viterbi School of EngineeringAdjunct Lecturer2017 — 2018Greater Los Angeles Area
- National Science Foundation (NSF)I-Corps Adjunct Faculty2017
- Extended Leave - Colombia/Latin AmericaSabbatical2016Bogotá D.C. Area, Colombia
- Remodel It, an Idealab companyFounder and CEO2013Pasadena
- IdealabEntrepreneur in Residence2013
- Energy CacheFounder and CEO2009 — 2013
- X PRIZE FoundationDirector, Energy Prize Development2009
- Starfish VenturesInvestment Director2007 — 2008
- Soliant EnergyDirector of Manufacturing2006
- AeroVironmentLogistics Operations Manager2004 — 2006
- AeroVironmentNew Business Development Manager2002 — 2004
- VisteonConsultant to VP Product Development2001
- Ballard Power SystemsFuel Cell Engineer1997 — 2000
- BC Research Inc.Research Engineer1995 — 1997
- EssoReservoir Engineer1994
- Institute for Integrated Energy SystemsResearch Associate1993
- NortelIS Engineer1992
Skills & more
Lean Manufacturing10Venture Capital44Financial Analysis2System Dynamics1Aerospace5Automotive2Fuel Cells6Energy14Entrepreneurship27Product Development18Manufacturing7Cleantech29
+12 more
Energy EfficiencyEngineeringElectric VehiclesEngineering ManagementBusiness PlanningStart-upsNew Business DevelopmentRenewable EnergyStrategic AdvisorStarting new organizationsFanatical numerical analysisOrganizationLanguages English · French · German · Japanese · Spanish
- Advanced Open Water Diver — PADI
- Professional Engineer — Board for Professional Engineers and Land Surveyors of California
From Aaron's professional profile.
Deals · 2
DivirodBoard seat
via Thin Line Capital · filed May 2025 · $1.9M raise
Digital HarvestBoard seat
via Thin Line Capital · filed May 2020 · $1.5M raise
Attribution from SEC filings, press coverage, and firm rosters.
Colleagues at Thin Line Capital
Frequently asked questions
- Who is Aaron Fyke?
- A three-decade investor, engineer, and entrepreneur who cofounded six companies including two unicorns (Heliogen and Energy Vault) across fuel cell, ocean power, concentrating solar, and grid-scale energy storage. Previously a partner at Starfish Ventures and developer of a $10M energy XPRIZE; holds MBA/MSME from MIT and a BEng from University of Victoria.
- Where does Aaron Fyke work?
- Aaron Fyke is Founder and Managing Partner at Thin Line Capital.
- What boards does Aaron Fyke sit on?
- Aaron Fyke holds tracked board seats at Digital Harvest, Divirod.
- Where did Aaron Fyke go to school?
- Aaron Fyke studied at MIT Sloan School of Management (MBA, Operations); Massachusetts Institute of Technology (MS, Mechanical Engineering); University of Victoria (BEng, Mechanical Engineering).
Same school
Also attended MIT Sloan School of Management518
Doug LeonePartner at Sequoia Capital; former Global Managing PartnerHemant TanejaCEO & Managing Director of General CatalystBrad FeldCo-founder of Foundry and TechstarsChris MorrisProcess Specialist, Exit Readiness at Mayfair Equity PartnersBirgitteInvestor at InvestinorOlaInvestor at Investinor
+ 512 more
Also attended Massachusetts Institute of Technology1,387
Fred WilsonCo-founder & Partner at Union Square VenturesElad GilSolo general partner investing through Gil CapitalAileen LeeFounder & Managing Partner of Cowboy VenturesHemant TanejaCEO & Managing Director of General CatalystNat FriedmanCo-lead of Meta Superintelligence Labs; co-founder of NFDGBrad FeldCo-founder of Foundry and Techstars
+ 1,381 more
