Pasadena · Seed · 4 people tracked
Also known as THIN LINE CAPITAL, LLC
Find your way into Thin Line Capital
758 people in our graph share verified history with the Thin Line Capital team — schools, employers, funds. One of them is your warm intro.
Investment thesis
Thin Line Capital views decarbonizing the global economy as a generational economic opportunity. It targets seed-stage, low-capex companies in renewable energy, electrification of transport, and climate resiliency, plus software and data tools that decarbonize the built environment. The firm writes roughly $400K-$600K checks and builds a concentrated portfolio in areas where its team has deep domain expertise. As former entrepreneurs and engineers, the partners act as hands-on advisors and mentors, aiming to be a founder's first and last resource. It is now deploying its second fund to back clean energy and climate-focused companies.
Source: firm website, verified Sep 15, 2026.
Team · 4 people
from the firm's website
What they invest in
from 14 of 17 portfolio companiesCleantech ×10Energy ×8AI & Machine Learning ×7Climate Tech ×5Data & Infrastructure ×5SaaS ×4AgTech ×2Deep Tech ×2
HQs:United States×9Chile×1
Who they back
founder profiles across 7 portfolio companiesAccelerator rootsportfolio companies that came through a program
Investments · 17 tracked
founders shown can be your intro pathBy year:2025 · 12024 · 12023 · 22021 · 12020 · 12019 · 17 dated
Divirod provides real-time global water data by combining IoT sensing with analytics to deliver monitoring, nowcasts, forecasts, and early flood warnings.
CleantechClimate TechData & InfrastructureIoTBoulder, US
Antonio Javier Marti Canales(Executive Officer, Director, Promoter)Javier Marti(Founder and Manager)inHeiko Udluft(Executive Officer)inRichard Brennan(Executive Officer)
BoardNicolas Sauvage(Director)in
Board seatAaron Fyke· per SEC Form D
Co-investorsPortfoliaGoHub VenturesTDK Ventures
.jpeg){kind=logo}
Audette provides a platform for asset and portfolio managers to identify and prioritize building retrofit investments, using data analysis to uncover high-return opportunities that improve net operating income and reduce emissions.
PropTechSaaS
Co-investorsBuoyant Ventures Management, LlcCreative Destruction Lab (CDL)Energy Impact PartnersForesightModerne VenturesPanache Ventures+2 more
Digital Harvest builds data integration and analytics systems for agriculture, combining field, operational, and satellite/sensor data into one platform for planning and performance analysis.
AgTechAI & Machine LearningData & Infrastructure
Kevala operates a cloud-based platform that uses energy data analytics to model the electrical grid, forecast electrification impacts, and support siting of solar and storage projects.
CleantechData & InfrastructureEnergySan Francisco, US
ARAM SHUMAVON(Executive Officer, Director, Promoter)in
BoardMARK FERRON(Director)
Co-investorsC5 CapitalConstellation Technology VenturesHigh AlphaC5 Impact PartnersCostanoa Ventures
Mineral Forecast develops an AI platform for mining exploration that analyzes geoscience data to help identify promising mineral claims and optimize drilling operations.
AgTechAI & Machine LearningClimate TechDeep TechSantiago, CL
Javier Muñoz González(Founder)inJavier Muñoz(CEO & Co-Founder)inArturo Rochefort(COO & Co-Founder)in
Co-investorsMGV.VCSpider CapitalTechstars
Operant provides security and governance controls for agentic AI systems and Model Context Protocol workflows, enforcing per-action authorization, privacy controls, and audit-ready evidence at the network layer for regulated enterprises.
AI & Machine LearningCybersecurityEnterprise SoftwareRohnert Park, US
Co-investorsConstellation Technology VenturesMSIV
Optiwatt provides a load-management and virtual power plant platform for utilities, grid operators, and co-ops in North America, combining a consumer web/mobile app with operator tools and an optimization engine that dispatches distributed energy resources like EVs, chargers, and thermostats.
CleantechEnergySaaS
Co-investorsEast 11 VenturesNavitas CapitalSkyview Ventures
Optiwatt provides a load management platform for utilities and grid operators to run virtual power plant and demand response programs by dispatching EVs, smart thermostats, and Level 2 chargers.
CleantechEnergySaaSSan Francisco, US
Casey Donahue(Executive Officer, Director)in
BoardLouis Schotsky(Director)inPeter Franklin(Director)
Co-investorsUrban InnovationActive Impact InvestmentsNavitas CapitalSkyview Ventures
Othersphere provides location analysis and optimization software for deploying energy-intensive infrastructure, helping teams identify ideal sites faster and with greater confidence.
AI & Machine LearningCleantechData & InfrastructureEnergy
Robert Murphy(CEO)inMatt Hammond(CPO)in
Co-investorsForesightKeiki CapitalActive Impact InvestmentsKDX
Sistine Solar develops SolarSkin, a customizable overlay for solar panels that lets the panels match a roof's aesthetic or display custom designs.
CleantechEnergyHardwareSomerville, US
Senthil Balasubramanian(Executive Officer, Director)Lisa Khanna(Director)Tom Dinwoodie(Director)
Co-investorsEnergy Foundry
Sunairio develops grid forecasting software that integrates energy, weather, and climate data to help energy traders, grid operators, and renewable asset developers optimize commercial decisions.
AI & Machine LearningCleantechClimate TechData & InfrastructureEnergyInsurTechBaltimore, US
Rob Cirincione(Founder & CEO)inMitchell Walk(Director)
BoardAlex Behar(Director)inDavid Arcara(Director)
Co-investorsBuoyant Ventures Management, LlcConstellation Technology VenturesKeiki CapitalMassMutual VenturesRosecliff VenturesTechstars
Traceaq focuses on understanding, monitoring, and managing air quality through technology and science.
AI & Machine LearningCleantechClimate TechDeep TechIoT
Victor Gill(Chief Executive Officer)Taylor "Kai" Wilmot(Chief Technology Officer)inHeather Holmes(Co-Chief Science Officer)Derek Mallia(Co-Chief Science Officer)in
Voltaiq offers an AI-powered SaaS platform for the battery industry that collects and harmonizes data across the battery lifecycle, automates anomaly and quality detection, and provides root-cause analysis and natural-language data querying.
AI & Machine LearningCleantechEnergyEnterprise SoftwareSaaSBrooklyn, US
Tal Sholklapper(Co-founder & CEO)inEli Leland(Co-founder & CTO)in
BoardMichael Berolzheimer(Director)in
Co-investorsAnzu PartnersBee PartnersConductor CapitalSJF Ventures
XGS Energy develops a proprietary solid-state, closed-loop geothermal system that uses thermally conductive materials and a pipe-in-pipe heat exchanger to generate clean, round-the-clock power without dependence on water or specific rock geology.
CleantechClimate TechEnergyPalo Alto, US
Richard Chong(Chief Financial Officer)inMichael Danaher(Executive Officer)Ghazal Izadi(Executive Officer)inJoshua Prueher(Executive Officer, Director)Glen Robinson(Director)David Seldin(Director)
Co-investorsAligned Climate CapitalClearSkyClimate Innovation CapitalConstellation Technology VenturesValo VenturesVoLo Earth Ventures+2 more
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
Digital HarvestSensenetSolidspac3
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.
Portfolio news
latest coverage across their companiesXGS Energy · amp.axios.com · Aug 18, 2026
Voltaiq · beepartners.vc · Apr 20, 2026
Optiwatt · malwaretips.com · Mar 11, 2026
Audette-Logomark-Hot-pink · investing.com · Feb 28, 2026
Frequently asked questions
- How many investments has Thin Line Capital made?
- Thin Line Capital has 17 tracked investments, including 1 dated in the last 24 months.
- What stage does Thin Line Capital invest at?
- Thin Line Capital invests at the Seed stage.
- What is Thin Line Capital's typical check size?
- Thin Line Capital typically writes checks of $400K – $600K.
- What sectors does Thin Line Capital focus on?
- Thin Line Capital focuses on Cleantech, Climate Tech, Energy, IoT, Mobility & Transportation.
- Where is Thin Line Capital located?
- Thin Line Capital is headquartered in Pasadena, US.
- Does Thin Line Capital lead rounds?
- Thin Line Capital typically participates in rounds rather than leading them.
- Who does Thin Line Capital co-invest with?
- Thin Line Capital most often shares deals with Constellation Technology Ventures, Buoyant Ventures Management, Llc, Foresight, among 28 tracked co-investors.
Media · Podcasts & interviews
featuring the teamAaron Fyke — Thin Line Capital
LA Venture Podcast · Aaron Fyke
Similar investors
Abies Ventures is a venture capital firm that invests in deep tech startups with unique technologies, primarily in Japan and the United States, supporting founders solving global-scale challenges.
Alumni Ventures (AV) is a venture capital firm that co-invests alongside lead VCs in startups, backing founders with capital and access to a large investor and operator community.
OnePlanetCapital is a UK-based venture capital fund investing in climate tech and environmental businesses tackling climate change. It backs pre-seed and seed companies across AI, software, and hardware with real-world impact.
Eviny Ventures is the venture fund of the Eviny group, investing in startups and growth companies focused on the future renewable energy society.
2080 Ventures is a global venture ecosystem partner that connects founders, investors, corporates, and governments to accelerate innovation locally and globally, running accelerator programs and offering tools for founders, M&A, and secondaries.