About
Carl Stjernfeldt is a Managing Director at ArcLight Capital Partners focused on energy transition investments, including asset-light and software solutions across digital infrastructure and power generation, at deal stages ranging from growth to buyout. He previously led corporate development for Shell New Energies, overseeing investments and M&A in renewable energy and emerging business models, and spent over a decade as a venture investor at top-tier firms with concentration in software. Stjernfeldt has served on boards of multiple companies spanning software, networking, and clean energy sectors, and is active in entrepreneurial ecosystems through MIT affiliations, industry organizations, and advisory roles.
Experience
- ArcLight Capital Partners, LLCManaging Directorcurrent2021 — presentBoston, Massachusetts, United States
- EVPE Private EquityAdvisory Board Member2019 — 2021Houston, Texas, United States
- ShellHead of Corporate Development, New Energies – Americas2018 — 2021Greater Boston Area
- ShellNorth American Venture Manager2013 — 2018Boston / Houston
- Massachusetts Technology Leadership CouncilBoard of Trustees Member2009 — 2013Greater Boston Area
- Castile VenturesGeneral Partner2007 — 2013Greater Boston Area
- 12x12VC member2010 — 2012Greater Boston Area
- UMichigan Advisory boardBoard Member2004 — 2012Ann Arbor, MI
- New England Venture Capital AssociationBoard Member2006 — 2012Greater Boston Area
- Massachusetts Network Communications CouncilBoard member2007 — 2009Greater Boston Area
- Battery VenturesPartner2000 — 2007Greater Boston Area
- Cambridge Technology PartnersClient Partner1997 — 1998Greater Boston Area
- Summa FourEngineer, Engineering Manager1994 — 1997Manchester, NH
Education
- MIT Sloan School of ManagementMBA, Entrepreneurial Finance1998 — 2000
- KTH Royal Institute of TechnologyMSc, Elektro1989 — 1993
- Northeastern UniversityMS, EE1992 — 1993
- KTH Royal Institute of TechnologyMaster's degree, Computer Engineering
Skills & more
Energy TransitionRenewable EnergyEnergy IndustryFinanceInvestments1Corporate Venture Capital1Venture Capital99Start-ups69Entrepreneurship74Mergers5Business Strategy34Business Development15
+12 more
Private EquityProduct ManagementDue DiligenceManagement ConsultingProduct DevelopmentBusiness PlanningMarketing StrategyStrategic PartnershipsStrategyStrategic PlanningLeadershipManagementLanguages English · German · Swedish
From Carl's professional profile.
Colleagues at Castile Ventures
Frequently asked questions
- Where does Carl Stjernfeldt work?
- Carl Stjernfeldt is at Castile Ventures.
Same school
Also attended MIT Sloan School of Management488
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
+ 482 more
Also attended KTH Royal Institute of Technology128
William JilltoftDirector of Strategy and Operations at NorthzoneJohanna OlnénData Analyst at NorthzoneRobin WänlundAssociate at Notion CapitalMagnus BergmanInvestor at Luminar VenturesGiuseppe LacerenzaPartner at Keen Venture PartnersRajiv DatarEntrepreneur-In-Residence at The Innovation Space
+ 122 more
Also attended Northeastern University259
Matt GuineyChief Financial Officer at Flybridge Capital PartnersSaunaz MoradiPartner, Communications at Lux CapitalBrian DixonManaging Partner at Kapor CapitalMurat BicerGeneral Partner at CRV (Charles River Ventures)Arjun BalajiPartner, Investing & Research at ParadigmAyesha AroraVenture Partner at S32
+ 253 more
Shared employers
Also worked at Shell101
Rob van der MeijPartner at Capricorn Venture PartnersElina HolkkoPartner and CFO at Lifeline VenturesKatie ClasenPartner at Prelude VenturesSamuel MugoyaGeneral Partner Advisor at Beyond Capital VenturesBikram DangInvestor Relations at Group 11Mira InbarPartner at ArcTern Ventures
+ 95 more
Also worked at New England Venture Capital Association21
Ian ChiangPartner at Flare Capital PartnersRudina SeseriFounder and Managing Partner at Glasswing VenturesMaia HeymannFounder & General Partner at ConvergeSarah HodgesGeneral Partner at Pillar VCLily LymanPartner at Underscore VCKevin BittermanPartner at Atlas Venture
+ 15 more
Also worked at Battery Ventures110
Logan BartlettManaging Director at Redpoint VenturesNeeraj AgrawalGeneral Partner at Battery VenturesChiraag DeoraPrincipal at GreycroftJoe ChernovInvestor at Battery VenturesDavid HartwigOperating Partner at Sapphire VenturesSanjiv KalevarPartner at Mucker Capital
+ 104 more
Also worked at Cambridge Technology Partners8
Lak AnanthGlobal Managing Partner at Next47Jim SimsInvestor at Silicon Valley Data CapitalScott SegellValue Based Care + Payor Relations / Healthcare Investor at Pave Health VenturesFergal MullenPartner at Highland EuropeHitoshi YoshidaVenture Partner at ETF PartnersLars NordwallAdvisor at Creandum
+ 2 more