27
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5
Early stage
8
Mid stage
10
Late stage
12y
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Portfolio
27 investments · sorted by recency
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Investor
Apr 2026
Type One Energy Group is mission-driven to provide sustainable, affordable fusion power to the world. The company was formed in 2019 by a team of globally-recognized fusion scientists with a strong track record of building state-of-art stellarator fusion machines, together with veteran business leaders experienced in successfully scaling companies and commercializing energy technologies. Type One Energy applies proven advanced manufacturing methods, modern computational physics and high-field superconducting magnets to develop its optimized stellarator fusion energy system. Its FusionDirect development program pursues the lowest-risk, shortest-schedule path to a fusion power plant over the coming decade, using a partner-intensive and capital-efficient strategy.
Investor
Jan 2026
Addionics is a growing, progressive startup based in Israel, the UK and the US.
Addionics provides specialised improved rechargeable batteries by redesigning their architecture. With a novel and patent pending 3D metal fabrication method, we enhance performance, mileage, safety, cost and charging time of batteries. Addionics architecture work with current and emerging LIB technology. In short - we are betting on the race, not the horse. So whatever battery chemistry wins, our technology will enhance it yet further. There are two sides to the company - hardware making smart 3D current collectors, and software where AI will optimise given structures for given performance attributes.
Investor
Jan 2026
A network for entrepreneurs building in stealth.
Submit your information here so investors can find you:
harmonic.ai/get-discovered
Investor
Oct 2025
Antora Energy delivers affordable, reliable energy to industry, data centers, and the grid. Antora’s thermal batteries turn low-cost electricity into always-on heat and power, without supply-constrained critical minerals or multi-year construction timelines.
Investor
Apr 2025
RepAir Carbon was founded in 2020 with a mission to pioneer the most sustainable carbon dioxide removal solution.
To realize the sustainable gigaton, we’re building an ecosystem of innovative partners — from world-leading material suppliers and storage and utilization providers to forward-thinking investors and offsetters.
Investor
Dec 2024
ZutaCore’s waterless, direct-to-chip liquid cooling, with its exclusive pool boiling technology, represents a fundamental shift from traditional air or single-phase liquid cooling. Instead of moving heat away gradually, it removes it instantly at the source by turning liquid into vapor, keeping processors consistently cool even under the most extreme workloads.
For operators, the impact is immediate:
Higher performance per rack — Run more AI and HPC workloads in the same footprint.
Lower energy costs — Drive PUE and pPUE closer to the ideal of 1.0, cutting power bills dramatically.
Greater reliability — Eliminate risks of condensation, corrosion, or hardware damage.
Sustainability gains — Reduce both water and electricity use, accelerating ESG progress.
Investor
Nov 2024
Voice is the interface of the future. That’s why we developed Voice AI that hears and understands like people do. It makes voice UI work as it should, providing frustration-free voice experiences anywhere, anytime for AI products that people love to use.
Kardome gives your voice-integrated products the ability to hear and localize sound sources, identify who’s speaking, and understand what they mean in context, for natural, intuitive voice interactions that perform reliably in the most complex environments: Powered by our Spatial Hearing AI and Cognition AI.
Investor
Feb 2024
Discover Bites, the game-changing training platform that revolutionizes the way knowledge is communicated.
With Bites, you can easily create and manage training content, wherever and whenever you want.
Our full learning cycle combines Short Videos, questions, and summary cards to ensure maximum comprehension of the content.
Train better, one Bite at a time.
Investor
Jan 2024
Carrar develops battery systems for electric vehicles with unprecedented heat dissipation capability, temperature control, and uniformity throughout the battery pack.
Our system significantly lowers the Total Cost of Owning commercial fleets and increases the return on investment for passenger cars, lowering consumer range and power anxiety.
Our battery lifespan is up to three times longer than the industry standard, with a patented thermal management system that leverages two-phase immersion cooling to maintain an optimal battery temperature in all climate and work conditions and through ultra-fast charging.
Our future-proof technology reduces charging times to minutes, increases range, extends battery life, enhances battery safety, and minimizes the environmental impact of batteries.
Carrar contributes to the environment by extending battery life and reducing GHG emissions. We also lower rare metal mining, and our batteries maintain higher capacity, longevity, and health through second life. We are committed to UN SDG No. 7.3, 12 and 13.
Carrar partners with leading international OEMs, including Volvo Group. Volkswagen and General Motors.
Investor
Oct 2023
SeeTree offers you complete transparency into the health and production of each of your trees by leveraging the most powerful innovations available. An end-to-end Intelligence Network providing you visibility, monitoring, and actionable analytics to optimize your farming. SeeTree uses the power of machine-learning algorithms to get smarter, and offer you the most precise window into the strength of your trees.
Investor
May 2023
Pioneering Sustainable Innovation for Earth and Beyond.
We are a forward-thinking tech-based company, that develops novel technologies, to ensure viable and sustainable life on earth and beyond.
From Moonshot to Earth Impact: Helios began as a space technology company with the bold mission to extract oxygen from the moon, with the challenge to enable the separation of oxygen from lunar minerals in extreme environments, where zero emissions are not an option but a necessity. Our efforts resulted in a breakthrough zero-emission process for metal production, applicable also on Earth – known as the Helios Cycle™.
Enabling Zero-Emission Iron Production: the Helios Cycle™ revolutionizes iron production. It produces iron from iron ore using mostly thermal energy, emitting only oxygen. This eco-friendly method requires significantly less energy, cuts costs, minimizes environmental impact, and maximizes existing resource utilization.
Beyond Iron: the Helios Cycle™ doesn’t stop at iron. It extends to other critical elements—silicon, copper, nickel, and lithium—offering a greener path for resource extraction.
Expanding our vision from our lunar origins, we’ve evolved into leaders in green steel innovation. Through strategic partnerships and collaborations, we’re poised to transform the trillion-dollar steel industry.
Follow us on this journey toward a sustainable future - on earth and beyond!
Investor
May 2023
Houston-based Quidnet Energy is an energy storage company that uses the subsurface as a sustainable natural resource. Quidnet Energy’s patented Geomechanical Energy Storage technology utilizes excess electricity from the grid to store water beneath the ground under pressure, delivering that energy later to provide firm, reliable power to the grid.
Board Member and Investor
Dec 2022
We are a reforestation company using aerial mapping software, drone technology, automation, ecological science and a lot of passion to reforest post-wildfire areas at a rapid pace.
Investor
Nov 2022
Wind Catching Systems develops floating offshore wind technology. Our multi-rotor floating wind technology takes a disruptive approach to harvesting the vast wind resources available in deep-water ocean areas.
Show all 27 investments ↓
Experience · 30 entries
All (30)
Investments (27)
Board (5)
2026
Investor
Apr 2026
Type One Energy Group is mission-driven to provide sustainable, affordable fusion power to the world. The company was formed in 2019 by a team of globally-recognized fusion scientists with a strong track record of building state-of-art stellarator fusion machines, together with veteran business leaders experienced in successfully scaling companies and commercializing energy technologies. Type One Energy applies proven advanced manufacturing methods, modern computational physics and high-field superconducting magnets to develop its optimized stellarator fusion energy system. Its FusionDirect development program pursues the lowest-risk, shortest-schedule path to a fusion power plant over the coming decade, using a partner-intensive and capital-efficient strategy.
Investor
Jan 2026
Addionics is a growing, progressive startup based in Israel, the UK and the US.
Addionics provides specialised improved rechargeable batteries by redesigning their architecture. With a novel and patent pending 3D metal fabrication method, we enhance performance, mileage, safety, cost and charging time of batteries. Addionics architecture work with current and emerging LIB technology. In short - we are betting on the race, not the horse. So whatever battery chemistry wins, our technology will enhance it yet further. There are two sides to the company - hardware making smart 3D current collectors, and software where AI will optimise given structures for given performance attributes.
Investor
Jan 2026
A network for entrepreneurs building in stealth.
Submit your information here so investors can find you:
harmonic.ai/get-discovered
2025
Investor
Oct 2025
Antora Energy delivers affordable, reliable energy to industry, data centers, and the grid. Antora’s thermal batteries turn low-cost electricity into always-on heat and power, without supply-constrained critical minerals or multi-year construction timelines.
Show all 30 entries ↓
Investment activity
2014–2026 · 27 investments
Recent (last 2 years)Earlier