Participated · Series B · Jul 2026

Quaise Energy develops superhot geothermal power systems and the millimeter wave drilling technology to access deep, high-temperature rock. Its drilling approach, developed after research at MIT, ablates rock and aims to reach temperatures of roughly 300–500°C at depths beyond what conventional drilling can economically access. The company has demonstrated field progress, drilling more than 100 meters through granite in 2025 and is approaching one kilometer of depth at its Central Texas site. Quaise is both a technology innovator and project developer and is constructing Project Obsidian on federal geothermal leases in Oregon with construction underway. The company says Project Obsidian has gigawatt-scale potential and plans to deliver first electrons to the grid by 2030. Quaise has raised $230 million to date, with the recent $134 million Series B serving as the initial equity component of a broader capital program that includes project-level equity and debt.

Participated · Series B · May 2026

Thea Energy builds pixel-inspired rectangular magnets and software to generate and fine-tune stellarator magnetic fields, using many smaller planar coils to shape plasma confinement. The company says its approach lets software control arrays of regular magnets to create complex stellarator fields, and it has built dozens of full-scale magnet iterations in its Jersey City lab. Thea originally spun out of the Princeton Plasma Physics Laboratory and has iterated its design to include a set of larger magnets alongside more than 300 smaller coils that fine-tune the plasma. With $130 million in total private funding after the new Series B, Thea is scaling magnet manufacturing and plans to begin construction of its Eos demonstration reactor next year. The company aims to complete Eos by 2030 and bring a commercial device, Helios, online in 2034.

Participated · Series A · May 2026

CREW Carbon offers a process intensification solution for wastewater treatment that uses strategically-sourced alkaline minerals to optimize pH and alkalinity, improving biological performance, settleability, and plant capacity while permanently sequestering CO2. Since beginning commercial operations in 2024, CREW has deployed at nearly 10 facilities across the U.S. and Europe and secured long-term RFPs with utilities. The company has captured over 2,000 tons of CO2 and secured more than $33 million in carbon removal offtake agreements, delivering verified carbon removal credits to corporate buyers. CREW has developed proprietary measurement, reporting, and verification (MRV) capabilities and is developing a scalable analytics platform to provide operational insights and process optimization. Financial and strategic support from the Series A will be used to scale deployments, expand customer engagements, and add key hires in wastewater process, technology, supply chain, and business development.

Participated · Series B · Nov 2025

Founded in Durban in 2017, maxwell+spark builds a unified battery ecosystem to decarbonise industrial logistics. Its flagship products include fridge.li, the world’s first battery-powered transport refrigeration system, which entered commercial service with SPAR in 2018, and motive.li lithium-ion packs that allow warehouses to shift fleets to cleaner, maintenance-free electric power. The company’s solutions target forklifts, cold-chain trailers and stationary backup units, cutting energy use and improving uptime versus diesel and lead-acid alternatives. Having expanded operations to the US and EU, maxwell+spark intends to use new capital to accelerate global rollout and broaden its product line. While no revenue or customer counts were disclosed, management emphasizes growing demand from cost-sensitive logistics operators seeking electrification. CEO Clinton Bemont views the firm’s technology as critical for decarbonising one of the world’s toughest, most price-driven sectors.

Participated · Seed · Oct 2025

Vycarb develops a carbon neutralization and measurement system that converts CO₂ into stable dissolved bicarbonate (HCO₃⁻), allowing safe, low-cost, and verifiable carbon capture directly at the emission source. The platform leverages ocean-based chemistry combined with real-time sensors to quantify and monitor captured carbon. By turning CO₂ into bicarbonate, the company provides permanent storage without the need for geological sequestration. Vycarb positions its solution as both scalable and measurable, addressing critical requirements for carbon management in heavy-emitting industries. The company plans to use recently raised capital to accelerate the commercialization of its water-based carbon storage technology, indicating an upcoming push toward market deployment and customer acquisition. While no revenue or user metrics were disclosed, the seed financing represents its first publicly reported round and supports continued technology development and early sales.