• Aether Fuels

  Participated · Convertible Note · Jan 2026

  Aether Fuels is a clean-energy company commercializing Aether Auror™, a process that transforms industrial waste gas and biomethane into CORSIA-certified sustainable aviation fuel with more than 70 % greenhouse-gas reductions. Its flagship initiative, Project Beacon, is a 50 barrels-per-day (2,000 t per year) SAF plant being co-developed with Aster at the latter’s Bukom Island refinery in Singapore; engineering is underway, construction is slated for 2026, and commercial operations are targeted for 2028. The company is also planning to open a Singapore R&D center in 2026 to support ongoing technology scale-up. To bolster execution, Aether has added Stu Stott as Global Vice President of Projects and expanded its regional business development team. Including the latest round, Aether has raised more than US$60 million to date, funding pilot activities in the U.S. and the move from demonstration to commercial deployment. The new capital will accelerate Project Beacon and further maturation of its core technology.

• Rodatherm

  Participated · Series A · Sep 2025

  Rodatherm Energy is tackling enhanced geothermal power with a closed-loop system that circulates refrigerant through steel pipes instead of water, a design it says boosts heat-transfer efficiency by 50% and cuts water use. The sealed loop also eliminates the need for filters that open-loop water systems require to deal with grit and debris. Fresh from emerging out of stealth, the company has secured $38 million in Series A funding to drill and commission a 1.8-megawatt pilot plant in Utah, which it plans to complete by the end of 2026. Utah Associated Municipal Power Systems has agreed to purchase electricity from that pilot project. If the demonstration proves cost-competitive, Rodatherm intends to scale to larger commercial installations and compete with peers such as Fervo Energy, Sage Geosystems, XGS Energy and Quaise. The Series A is the first publicly disclosed capital for the company and will cover drilling, loop installation and system testing as it works to validate its economic model.

• Tulum Energy

  Participated · Seed · Jul 2025

  Tulum Energy commercializes a methane pyrolysis process that splits natural gas into pure hydrogen and solid carbon using a modified electric arc furnace and no expensive catalysts. The company was spun out after Techint Group engineers rediscovered the reaction and is led by CEO Massimiliano Pieri. Tulum plans to build a pilot plant in Mexico alongside an existing Techint steel plant using its recently raised seed funding. At commercial scale the company projects two tons of hydrogen and 600 tons of carbon per day. It aims to produce hydrogen for about $1.50 per kilogram in the U.S., roughly $0.50 above most hydrogen from natural gas and below some green-hydrogen methods. Tulum intends to sell both the hydrogen and the solid carbon co‑product and competes with firms such as Modern Hydrogen, Molten Industries, and Monolith.

• Electrified Thermal Solutions

  Participated · Series A · Dec 2024

  Electrified Thermal Solutions develops the Joule Hive Thermal Battery (JHTB), an MIT-developed system that uses electrically and thermally conductive patented bricks to generate, store, and deliver near-flame temperatures up to 1,800°C. The JHTB is positioned to electrify industrial heat by leveraging renewable electricity to replace fossil-fuel combustion in boilers, dryers, and furnaces. The company emphasizes integration with existing infrastructure and targets sectors including cement, mining, metals, chemicals, power, and food processing. Electrified Thermal says industrial heat processes account for over 20% of global greenhouse gas emissions, making its zero‑carbon heat approach relevant to hard‑to‑abate industries. The company plans a commercial demonstration in 2025, aims to commercialize the JHTB by 2026, and targets deploying 2 GW of thermal power capacity by 2030. It raised $19 million in venture financing to accelerate its commercial demonstration, scale manufacturing, and expand its industrial customer base. Electrified Thermal Solutions builds the Joule Hive — a thermal battery made from electrically conductive 'e-bricks' doped with semiconductor materials. The bricks are heated by running electricity through them like a toaster, can store heat for hours or days, and ETS says over 95% of input electricity can be recovered as heat. A stack can reach temperatures nearing 2,000°C, enabling use in steel, glass, cement and chemical plants, as well as steam generation or power turbines. ETS says its heat is at least three times cheaper than hydrogen and can be competitive with natural gas in regions with low electricity prices or when a $50/metric-ton carbon price is applied. The company has worked with a brick maker to adapt recipes for industrial-scale equipment, is operating a pilot system about the size of an elevator, and is designing a shipping-container-scale commercial unit. ETS plans to sell either heat from the batteries or the complete system; the technology stems from about a decade of work beginning with CEO Dan Stack's graduate research at MIT. Financially, ETS has raised $4.75 million to date, including a $4.5 million seed round led by Clean Energy Ventures.

• Lithios

  Participated · Seed · Oct 2024

  Lithios builds a device that uses electrified intercalation compounds—materials used in lithium‑ion batteries—to selectively absorb lithium from briny water and then release a concentrated, purified lithium solution into fresh water. The process is designed to minimize water use: remaining brine is injected back underground and much of the release-step water can be reused. Founder Mo Alkhadra pivoted from water remediation research to recovering valuable minerals, starting with lithium to meet rising EV battery demand. Lithios has tested 16 different brines from North America, South America, and Europe as it scales the technology. The company plans to move from bench‑top experiments to a suitcase‑sized pilot, then to a refrigerator‑sized system that could be replicated modularly for large commercial projects. Recent financings will fund scale‑up and equipment purchases to support those pilots.

No current team members are available.