Overview
Portfolio
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Propellervc
Boston, United States
Invests in early‑stage climate‑tech companies at the ocean‑climate nexus, focusing on maritime, energy, food, data, robotics and marine carbon removal.
Portfolio
17+
Employees
10+
Founded
2022
AUM
≈ $117.0M
Investment focus
Stages
No stages listed
Industries
No industries listedGeographic scope
Global
Fund details
Funds
Propeller Fund I
Vintage 2024 • $117.0M
Sources
Propellervc
Invests in early‑stage climate‑tech companies at the ocean‑climate nexus, focusing on maritime, energy, food, data, robotics and marine carbon removal.
Portfolio
17+
Employees
10+
Founded
2022
AUM
≈ $117.0M
Funds
Propeller Fund I · Vintage 2024 • $117.0M
Stages
No stages listed
Industries
No industries listedGeographic scope
Global
Sources
Showing 17 of 17 matched portfolio companies
Aikido Security offers a unified platform that integrates open source dependency scanning, static code analysis, and cloud posture management to continuously monitor code and cloud environments for vulnerabilities. This solution reduces the noise from irrelevant security alerts, enabling developers to focus on critical issues and streamline vulnerability management across their tech stack.
Funding: $24.6M
Rough estimate of the amount of funding raised
Funding: $24.6M
Rough estimate of the amount of funding raised
Allium Engineering develops innovative stainless steel cladding technology for steel construction materials to prevent rebar corrosion. This process extends infrastructure lifespans significantly while offering a lower-cost alternative to traditional materials. Their coated rebar technology enhances structural resilience against environmental stressors like storms and freeze-thaw cycles.
Funding: $4.3M
Rough estimate of the amount of funding raised
Funding: $4.3M
Rough estimate of the amount of funding raised
Aquatic Labs develops scalable, low-power solid-state sensors for aquatic monitoring across various industries. Their technology provides real-time, high-quality data without requiring consumable reagents. This enables pervasive, persistent environmental measurements for accurate, data-driven insights.
15+
700+Approximate amount of employees
Funding: $4.8M
Rough estimate of the amount of funding raised
Funding: $4.8M
Rough estimate of the amount of funding raised
Banyu Carbon develops a direct air capture technology that utilizes sunlight to drive a chemical reaction for releasing CO2 from seawater. This process yields both sequesterable carbon dioxide and solar electricity, aiming to significantly lower the cost of carbon removal. The company provides low-cost, verifiable carbon credits to organizations pursuing net-zero targets.
Funding: $6.8M
Rough estimate of the amount of funding raised
Funding: $6.8M
Rough estimate of the amount of funding raised
Blue Energy manufactures and operates modular nuclear power plants, focusing on predictable cost and reliable timelines through centralized fabrication. They de-risk construction via fixed-price contracting, enabling project finance for new nuclear assets. The company sells dispatchable, baseload megawatts to industrial customers through long-term power purchase agreements.
10+
700+Approximate amount of employees
Funding: $45.0M
Rough estimate of the amount of funding raised
Funding: $45.0M
Rough estimate of the amount of funding raised
The startup develops a decarbonization technology that utilizes accelerated weathering of limestone to capture carbon emissions from point sources. This process converts captured emissions into stable oceanic bicarbonate, effectively reducing atmospheric CO2 levels and promoting ocean health.
Funding: $3.5M
Rough estimate of the amount of funding raised
Funding: $3.5M
Rough estimate of the amount of funding raised
CarbonRun develops technology to enhance natural carbon sequestration processes in rivers, helping to remove carbon dioxide from the atmosphere. Their solutions also aim to protect and improve aquatic ecosystems.
Provides a centralized platform for creators to build and manage online communities, combining tools for content sharing, member engagement, and monetization. It streamlines community management by integrating features like discussion forums, event scheduling, and subscription-based access, enabling creators to foster deeper connections and generate revenue from their audiences.
Funding: $30.5M
Rough estimate of the amount of funding raised
Funding: $30.5M
Rough estimate of the amount of funding raised
Ebb develops electrochemical water technology that processes desalination brine to produce additional freshwater and valuable industrial products. This process also facilitates permanent atmospheric carbon dioxide removal by returning alkaline seawater to the ocean. The modular systems integrate with existing desalination infrastructure to enhance water security and support decarbonization efforts.
Funding: $24.8M
Rough estimate of the amount of funding raised
Funding: $24.8M
Rough estimate of the amount of funding raised
Coastal Carbon utilizes artificial intelligence and remote sensing technology to verify and monitor blue carbon projects globally, ensuring accurate data collection and analysis. This approach addresses the challenge of tracking carbon sequestration in coastal ecosystems, providing reliable metrics for climate action initiatives.
Hydr provides a cash flow management platform that enables businesses to receive 100% of their invoice value within 24 hours through a digital onboarding process and integration with cloud accounting software. This solution addresses the issue of delayed payments, enhancing financial liquidity and allowing companies to focus on growth rather than chasing invoices.
Funding: $2.1M
Rough estimate of the amount of funding raised
Funding: $2.1M
Rough estimate of the amount of funding raised
Indeximate offers continuous subsea power cable health monitoring using fiber optic sensing to detect and quantify degradation like abrasion and fatigue. Its platform transforms existing cable fiber into virtual strain gauges, providing precise geolocation and urgency for issues to enable proactive maintenance and reduce downtime.
Naviers is developing a new type of watercraft designed to significantly reduce the operational costs associated with marine vessels through advanced hydrodynamic engineering and fuel-efficient propulsion systems. The 2024 N30 Pioneer Edition, which is currently sold out, exemplifies this technology, with reservations for the 2025 model available by invitation only.
Nexa AI provides an on-device generative AI development platform that optimizes AI models for edge deployment. Their proprietary NexaQuant technology significantly reduces model size and memory footprint, enabling sub-second inference for multimodal AI tasks directly on diverse hardware.
Funding: $16.5M
Rough estimate of the amount of funding raised
Funding: $16.5M
Rough estimate of the amount of funding raised
rpheus AI develops optimized artificial intelligence solutions that enhance blockchain-based machine learning networks, enabling decentralized data processing and decision-making. The company addresses the inefficiencies in current AI systems by creating a more intelligent and interconnected web ecosystem.
Rewind is a multi‑year, virtual weight‑loss program that combines medical nutrition therapy, continuous 1:1 virtual visits with physicians and registered dietitian coaches, and a peer‑support community. The three‑phase curriculum—Reset (rapid weight loss via meal‑replacement), Transition (gradual food reintroduction) and Sustain (long‑term maintenance and clinical monitoring)—aims to put Type 2 diabetes into remission and keep weight off.
Funding: $2.5M
Rough estimate of the amount of funding raised
Funding: $2.5M
Rough estimate of the amount of funding raised
Vatn Systems develops affordable autonomous underwater vehicles (AUVs) that operate in cooperative swarms, utilizing advanced navigation software for effective performance in GPS-denied environments. These AUVs enable rapid deployment and execution of complex underwater missions while minimizing hardware costs through a modular design tailored to specific operational requirements.
Funding: $13.0M
Rough estimate of the amount of funding raised
Funding: $13.0M
Rough estimate of the amount of funding raised