Energy Startups

H55 develops certified electric propulsion systems and energy storage solutions for aviation, enabling aircraft manufacturers to transition to electric flight. The company transforms commercial lithium cells into aviation-grade battery systems approved by regulators and insurers.

1 investor

Hadron Energy develops 2 MW light-water micro modular nuclear reactors for data centers, industry and remote sites.

1 investor

Hago Energetics develops technology to convert methane into hydrogen for use in transportation, power generation, and other applications, serving municipalities and energy markets seeking to reduce carbon emissions.

1 investor

Halco Lighting Technologies manufactures energy-efficient lighting products including lamps, ballasts, and fixtures for the electrical industry. The company serves distributors and customers through direct sales channels and an online ordering portal.

1 investor

Halide Energy manufactures copper flow battery systems for grid-scale energy storage, designed to discharge power over 4-12 hours. The company serves utilities, power producers, and energy-intensive industrial operations seeking long-duration storage solutions.

1 investor

Hallcon is a transportation and infrastructure services company providing customizable transportation solutions including shuttles, vehicle maintenance, facility cleaning, staffing, and technology integration for technology companies, manufacturers, universities, hospitals, airports, and other organizations.

1 investor

Halocell Energy develops next-generation perovskite photovoltaic (PV) modules that generate power under all light conditions, including low light where its modules provide power equivalent to button batteries. The technology targets IoT devices as a stepping stone toward large-scale full-sun solar products.

1 investor

Halophase provides continuous 4D thermographic monitoring of power grid assets, using heat signatures to detect underperformance and predict failures across transmission lines, power transformers, and utility-scale solar plants. It serves grid operators and power asset owners in the energy sector.

1 investor

Hamara Grid develops and operates solar mini-grids in rural areas of India, serving underserved communities with renewable energy access and productive use of energy services. The company focuses on rural electrification and economic development through distributed renewable energy infrastructure.

1 investor

Hammerhead develops software that orchestrates power, cooling, and compute in real time to unlock idle GPU capacity in data centers for AI workloads. The platform enables AI infrastructure operators and cloud providers to deploy AI workloads faster and more cost-effectively without waiting for grid expansion.

1 investor

HAMR Energy develops low-carbon and renewable fuels projects, including hydrogen and biomass-based solutions, for sectors difficult to decarbonize. The company works on project development, techno-economic analysis, and deployment of clean fuel technologies in Australia.

1 investor

Harvest Waste develops high-efficiency waste-to-energy plants that convert waste into electricity with superior efficiency compared to conventional technologies, serving municipalities and businesses in developing regions. The company builds integrated waste management hubs called Ecoparks that combine energy generation, recycling, and resource recovery to support circular economy transitions.

1 investor

Hav Energy invests in maritime LNG carrier infrastructure, having co-invested in ten newbuild LNG vessels with LNG owner-operator Knutsen LNG under long-term contracts. The company develops a portfolio of energy assets through investments in natural gas infrastructure and the energy transition, based in Norway.

1 investor

Havenhill Synergy Limited is a clean-tech utility company that generates electricity using solar energy for urban and rural areas across Africa, supporting the continent's infrastructure development.

1 investor

Havenwise offers software that automatically controls a home's heat pump based on energy tariffs, weather, and the home's heating behaviour to improve comfort and lower running costs. It connects to supported internet-connected heat pump systems and shifts heating and hot water to cheaper periods, targeting UK homeowners.

1 investor

Haylon Technologies develops battery management systems and software for optimizing performance across drones, electric vehicles, grid storage, and space applications. The company provides hardware and firmware solutions that enable advanced battery chemistries to deliver longer flight times, faster charging, improved reliability, and extended operational range.

1 investor

Hayzel develops technology that captures wasted potential energy from HVAC expansion valves and converts it into electricity to power cooling systems, reducing energy consumption and carbon footprint for building owners. The patented solution installs onto existing chillers without major infrastructure changes.

1 investor

Hazer Group is an ASX-listed technology company developing and commercialising the HAZER Process, a method for producing hydrogen and graphite from natural gas and other feedstocks. It operates in the clean energy and hydrogen sector.

1 investor

HCS Control Systems designs, manufactures, and manages topside and subsea equipment for the oil and gas sector, and is best known for bespoke Intervention Workover Control Systems (IWOCS) used in subsea equipment installation. It offers turnkey services across the product lifecycle including design, manufacture, asset management, and manpower and equipment rental.

1 investor

Haltermann Carless manufactures hydrocarbon-based products and solvents for automotive, life science, industrial, and energy markets. Operating across eight global locations with over 160 years of combined heritage, the company produces specialty fuels, test fuels, performance solvents, and recycled transformer oils.

1 investor

Hunter Dickinson Inc. (HDI) is a private, global mining group that acquires, develops, operates, and monetizes mineral properties, and provides management, technical, financial, and administrative services to a portfolio of mineral companies. It works across multiple commodities including gold, copper, molybdenum, silver, and diamonds, covering exploration through mine operations.

1 investor

Heat Matrix designs and builds turnkey heat recovery systems that capture waste heat from industrial flue gases, baking vapors, and warm air streams to cut energy costs and CO2 emissions. It serves industrial clients in the food & beverage, bakery, manufacturing, and chemical sectors, including those with polluting or corrosive exhaust gases.

1 investor

Heat Solutions develops an Energy Management System (EMS) controller for commercial and industrial sites with distributed energy resources. The H.E.A.T. Energy Gateway integrates batteries, solar, generators, and other equipment from any vendor to optimize energy costs, revenue from grid services, and resilience during outages.

1 investor

heatboss provides a wireless heating control system for existing commercial and public buildings, letting users centrally manage on/off times and target temperatures for individual rooms. It supports radiators, underfloor heating, electric heaters, hot water, and integration with Building Management Systems to reduce energy use and costs.

1 investor