Thin Line Capital

Thin Line Capital is a venture capital firm founded in 2017 and based in Pasadena, California. The firm specializes in seed-stage investments, focusing on low-capital expenditure opportunities in the energy, agriculture, and water sectors, as well as related technology companies. Thin Line Capital is committed to sustainability and cleantech investing, leveraging the extensive market knowledge and entrepreneurial experience of its team to identify and support promising companies within these industries.

Aaron Fyke

Founder and Managing Partner

14 past transactions

XGS Energy

Series A in 2024
XGS Energy is a geothermal heat harvesting technology company focused on developing solutions for clean and renewable energy production. The company specializes in creating innovative geothermal power technologies that allow clients to efficiently and safely extract geothermal heat from deep earth formations worldwide. XGS Energy aims to provide competitively priced renewable energy that is environmentally friendly and accessible in various locations, contributing to a sustainable energy future.

XGS Energy

Venture Round in 2024
XGS Energy is a geothermal heat harvesting technology company focused on developing solutions for clean and renewable energy production. The company specializes in creating innovative geothermal power technologies that allow clients to efficiently and safely extract geothermal heat from deep earth formations worldwide. XGS Energy aims to provide competitively priced renewable energy that is environmentally friendly and accessible in various locations, contributing to a sustainable energy future.

Optiwatt

Series A in 2023
Optiwatt is a developer of a monitoring application that helps electric vehicle (EV) owners understand the costs associated with charging their vehicles at home. The platform connects home electricity rate data with EV battery metrics, allowing users to see the cost of each charge and track their electric utility expenses based on their home address. By providing insights into real-time electricity rates, Optiwatt enables users to forecast their charging costs and calculate the savings achieved by driving electric compared to traditional gasoline vehicles. Additionally, the application aims to alleviate range anxiety by offering charge forecasting features, ensuring users are informed about their charging needs and expenses.

Divirod

Convertible Note in 2023
Divirod is focused on advancing water risk management solutions through its innovative water data analytics platform. By utilizing a geographically distributed monitoring network and leveraging global positioning system satellite signals, the company provides precise measurements of water, soil moisture, and vegetation. This allows Divirod to deliver timely and reliable insights into water-related risks such as floods and droughts. The information generated helps businesses make informed decisions that can mitigate financial impacts, conserve water resources, protect properties, support healthy ecosystems, and ultimately save lives.

Othersphere

Seed Round in 2023
Operator of a SaaS platform intended to accelerate the decarbonization of physical commodity sectors. The company's platform helps to find profitable and sustainable locations for the deployment of zero and low greenhouse gas industrial technologies, enabling companies and businesses to reduce greenhouse gas emissions trajectories and have cost-effective access to unique market insights.

SenseNet Inc.

Seed Round in 2023
SenseNet Inc. specializes in developing advanced Internet-of-Things (IoT) technology aimed at detecting wildfires early to safeguard communities and industries from their devastating impacts. The company offers an integrated IoT system that enhances data collection and analysis for large-scale applications, focusing on effective wildfire monitoring and protection. Utilizing a combination of low-power wide area networks and fifth-generation communications, SenseNet's solutions ensure seamless implementation in both remote and urban environments. This innovative approach provides users with timely insights and critical data necessary for preventing catastrophic wildfires, thereby protecting human lives and environmental resources.

Operant Networks

Seed Round in 2022
Operant Networks is a data-centric networking and cybersecurity technology provider based in Rohnert Park, California. The company specializes in developing a communication networking platform aimed at simplifying networking and cybersecurity for energy companies. Its robust, cyber-secure, and technology-agnostic solutions enable clients to deploy their services more efficiently and adapt to changing market conditions faster than their competitors.

Optiwatt

Seed Round in 2022
Optiwatt is a developer of a monitoring application that helps electric vehicle (EV) owners understand the costs associated with charging their vehicles at home. The platform connects home electricity rate data with EV battery metrics, allowing users to see the cost of each charge and track their electric utility expenses based on their home address. By providing insights into real-time electricity rates, Optiwatt enables users to forecast their charging costs and calculate the savings achieved by driving electric compared to traditional gasoline vehicles. Additionally, the application aims to alleviate range anxiety by offering charge forecasting features, ensuring users are informed about their charging needs and expenses.

Sunairio

Seed Round in 2022
Sunairio is a developer of a weather intelligence platform for renewable energy prediction. Its platform offers simulations that account for correlations between multiple locations and weather features and leverages the complete NOAA sub-hourly historical archive.

Kevala

Series A in 2021
Kevala, Inc. is a data and analytics company established in 2014 and based in San Rafael, California. The company specializes in providing analytical solutions for solar developers, helping them make informed decisions regarding their investments and projects through its cloud-based analytics software. Kevala's key offerings include the Grid Assessor, which identifies and evaluates potential locations for solar and energy storage, and the Impact Assessor, which measures the environmental, social, and economic effects of energy policies and programs. The platform aggregates data on grid infrastructure, market dynamics, and energy consumption, ensuring that users have access to meaningful insights. By serving a diverse clientele, including governments and utilities, Kevala aims to facilitate the integration of renewable energy sources into the existing grid, promoting a more sustainable energy future.

Divirod

Venture Round in 2021
Divirod is focused on advancing water risk management solutions through its innovative water data analytics platform. By utilizing a geographically distributed monitoring network and leveraging global positioning system satellite signals, the company provides precise measurements of water, soil moisture, and vegetation. This allows Divirod to deliver timely and reliable insights into water-related risks such as floods and droughts. The information generated helps businesses make informed decisions that can mitigate financial impacts, conserve water resources, protect properties, support healthy ecosystems, and ultimately save lives.

Solidspac3

Seed Round in 2020
Solidspac3 is a construction software and services firm focused on enhancing efficiency in field construction. The company provides a cloud-based application that enables users to compare actual field conditions against two-dimensional and three-dimensional plans. This functionality helps identify deviations and generate analysis reports, thereby reducing costs, rework, and delays. Solidspac3 also incorporates Building Information Modeling (BIM) and point clouds into its platform, facilitating effective communication among superintendents, foremen, and other field professionals. By ensuring that work in the field aligns with project plans and keeping all stakeholders informed, Solidspac3 aims to streamline construction processes and improve project outcomes.

Sistine Solar

Venture Round in 2019
Sistine Solar is a renewable energy company that designs custom solar panels. The company was founded in 2012 and is headquartered in Somerville, Massachusetts.

Voltaiq

Series A in 2018
Voltaiq has developed an Enterprise Battery Intelligenceā„¢ (EBI) software platform that assists customers in optimizing battery performance, reliability, and financing while minimizing risks associated with recalls and battery failures. This platform is distinguished as the only fully automated solution specifically designed to manage extensive battery data throughout the entire product lifecycle. It offers insights into real-time battery functionality and forecasts future performance. Founded in 2012 by two PhDs from UC Berkeley, Voltaiq serves a diverse global clientele, including major players in transportation, consumer electronics, energy storage, and the broader battery supply chain. The platform enhances safety for new products and supports innovation in how batteries are utilized across various applications, ultimately contributing to improved performance and reliability in the electrified world.
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