Thin Line Capital
Venture capitalSeed Β· 1 people tracked
Investment thesis
Decarbonizing the global economy represents the largest economic opportunity since the Industrial Revolution. The firm targets three primary verticals: renewable energy, which is growing at 17% annually with solar and wind now providing the cheapest new electricity in most markets; electrified transportation, with a $53 trillion market opportunity through 2050 as the automotive industry transitions; and climate resilience solutions, as natural disaster losses continue to escalate. The firm invests in low-capex software, analytics, and IoT solutions that improve logistics, reduce manufacturing costs, and enhance climate adaptation.
Source: firm website, verified Jul 21, 2026.
Team Β· 1 people
from the firm's websiteAaron Fyke is an investor, engineer, and entrepreneur with thirty years of experience who has cofounded six companies including two unicorns in fuel cells, ocean power, concentrating solar, and grid-scale energy storage. He previously served as CEO of Heliogen (backed by Bill Gates and others) and Energy Cache, and led investments at Starfish Ventures. He holds an MBA and MSME from MIT as an LGO fellow and a BEng in Mechanical Engineering from the University of Victoria, and is a certified Professional Engineer in California and British Columbia.
What they invest in
from 3 of 15 portfolio companiesAI & Machine Learning Γ2Climate Tech Γ2AgTech Γ1Cleantech Γ1Data & Infrastructure Γ1Deep Tech Γ1Energy Γ1InsurTech Γ1
HQs:ChileΓ1United StatesΓ1
Investments Β· 15 tracked
founders shown can be your intro pathAudette 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. The software serves commercial real estate asset managers seeking to optimize capital allocation for property upgrades.
PropTechSaaS
Mineral Forecast develops an AI platform for mining exploration that analyzes geoscience data to help identify promising mineral claims and optimize drilling operations. The platform serves geologists and mining executives seeking to accelerate mineral discovery for critical metals needed in the transition to zero-emissions energy.
AgTechAI & Machine LearningClimate TechDeep TechSantiago, CL
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. The platform serves the energy sector, providing risk management insights for managing grid variability and extreme weather events.
AI & Machine LearningCleantechClimate TechData & InfrastructureEnergyInsurTechBaltimore, US
Rob Cirincione(Founder & CEO)
Frequently asked questions
- 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 β $600K.
- What sectors does Thin Line Capital focus on?
- Thin Line Capital focuses on Cleantech, Climate Tech, Energy.
- Does Thin Line Capital lead rounds?
- Thin Line Capital typically participates in rounds rather than leading them.
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