Organization · Venture Capital
Thin Line Capital
Thin Line Capital is a venture capital firm based in the United States, focusing on seed-stage investments in low-capital expenditure companies within the energy and sustainability sectors.
Overview
What Thin Line Capital does
What Thin Line Capital is
Thin Line Capital is a venture capital firm based in the United States, focusing on seed-stage investments in low-capital expenditure companies within the energy and sustainability sectors.
How it participates in the startup ecosystem
The current public profile supports funder capabilities. Each capability below is shown separately so organization identity and role-specific information do not get conflated.
Operational profile
Organization status and context
Organization status describes the entity itself. Funding and program availability appear within the relevant capability profile.
- Operational status
- Active
- Organization type
- Venture Capital
- Structured capabilities
- Funder
- Last reviewed
- March 18, 2026
Official channels
Find Thin Line Capital elsewhere
Open the official website or a supported primary organization account.
Capability profile
Thin Line Capital as a funder
Investment thesis
Thin Line Capital focuses on investing in early-stage companies that are innovating in the clean energy sector, particularly those addressing the decarbonization of the global economy.
Focus narrative
Thin Line Capital invests in seed-stage companies that require low capital expenditures and focus on sectors such as renewable energy, electrification of transportation, and climate resiliency. The firm aims to capitalize on the significant economic opportunities presented by the decarbonization of the global economy, deploying between $400,000 and $600,000 into selected companies where they possess deep domain expertise.
Value beyond capital
Thin Line Capital adds value to its portfolio companies through deep domain expertise in clean energy and sustainability, providing strategic guidance and support to help them scale and succeed in their respective markets.
Terms and economics
- Typical check
- $400,000–$600,000
Focus and fit
- Stages
- Seed
- Regions
- United States
Availability
- Currently deploying
- Yes
Portfolio and track record
- Recorded portfolio count
- 14
Portfolio context
Thin Line Capital's portfolio includes notable companies such as Audette, which develops software for decarbonization planning; Kevala, providing analytics for energy data; and Optiwatt, optimizing electric vehicle charging. Other portfolio companies include Sistine Solar, Trace Air Quality, Digital Harvest, and Voltaiq, among others, each contributing innovative solutions to the clean energy landscape.
Common questions
What to know about Thin Line Capital
Upseed classifies Thin Line Capital under the Venture Capital organization type. Its current public profile includes funder capabilities.
Source and update disclosure
Know what this page is based on
Source basis
Public organization and program material, official websites, and structured Upseed records.
Last reviewed
March 18, 2026
Known limits
Capability profiles appear only when a structured public profile also contains decision-useful role evidence. Terms and availability can change.
Upseed is an independent guide. It is not affiliated with or endorsed by the organization described on this page.