Alternatives to Helion

Developing advanced fusion and fission nuclear energy technologies for carbon-free power.

Developing compact, high-field fusion power plants to provide clean, limitless energy.

Developing advanced fusion energy technology for clean, abundant power.

ConnectDER simplifies home electrification by enabling solar, EV charging, and battery storage without costly electrical panel upgrades.

Developing compact modular nuclear systems to make clean nuclear power cheaper than fossil fuels by utilizing high-temperature turbine technology.

Advancing compact fusion reactor technology for clean energy.

Fusion startup developing a commercial fusion power plant.

Developing and deploying solid-state transformers for data centers.

Fusion power startup developing grid-scale power plants using advanced laser technology.

Developing compact fusion power technology for clean, scalable, and sustainable energy solutions.

Developing high-temperature geothermal energy at industrial scale.

Energy-as-a-Service platform for businesses.

Developing pseudo-capacitive electrode technology for ultra-fast EV charging.

World's leading laser fusion company.

Amogy unlocks ammonia's potential as a clean energy source with proprietary reforming technology.

Develops, finances, builds, owns, and operates biomethane and green hydrogen plants for industrial decarbonization.

Platform for installation, operation, and optimization of heat pumps in existing multi-family residential buildings.

World's largest biogas engineering company specializing in full-stack clean fuels technology.

Comerc Energia provides comprehensive energy and decarbonization solutions for the free energy market.

Develops and manufactures a novel, low-cost, flexible solar film technology.

Clean energy company providing heat pumps and home energy-saving solutions directly to consumers.

Singapore-based cleantech company revolutionizing green hydrogen production with advanced materials.

A clean energy company focused on eliminating methane emissions from remote oil and gas operations.

Energy development company focused on the Mexican market.

Green Gravity develops a long-duration energy storage solution using gravity and abandoned mine shafts to store and dispatch renewable energy.

BioLite creates innovative off-grid energy products for outdoor recreation and emerging markets.

A global energy and technology group focused on decarbonizing the energy system and making green energy affordable.

AI-powered benchmarking and valuation platform for energy storage and renewable assets, providing insights for bankable decisions.

Developing a breakthrough, low-cost technology to produce renewable hydrogen using sunlight and any source of water.

Developing flexible, efficient, and low-cost solar cells to turn any surface into an energy source.

Energy technology company focused on innovative solutions.

Geothermal heat and lithium project developer.

Developing, building, and operating large-scale battery storage systems for grid stability and renewable energy integration.

Develops and constructs large-scale battery energy storage systems directly connected to the high-voltage grid.

Enabling the construction industry to build smarter, faster, and greener with physical AI and robotic microfactories.

Industrial electrolysis technology for green hydrogen and e-fuels production.

Kinewell Energy develops innovative subsea cable installation technology to reduce costs and risks for offshore wind farms.

Calgary-based geothermal energy startup developing innovative solutions for clean energy.

Driving Europe's transition to an 'electro-continent' through investment and advocacy.

Physics-informed AI for real-time electric grid simulation and analysis.

General Fusion is advancing practical fusion energy with Magnetized Target Fusion technology to help deliver clean, reliable power for the world.

Building industrial hardware from the atoms up using AI.

ZOOZ Power provides ultra-fast EV charging solutions to overcome grid limitations by leveraging kinetic energy storage.

Developer of micro-modular reactor (MMR) technology for clean energy.

Empowering buildings to generate uninterrupted on-site clean energy and participate in the distributed energy sector.

Developing a magnetized target fusion (MTF) approach to clean energy generation.

Transforms waste heat into zero-emission electricity using an isothermal heat engine.

Electrifying the global steel industry with innovative technology.

A British energy company building an end-to-end energy value chain for low-cost, abundant energy.

Platform for home and vehicle electrification, offering personalized recommendations and supplier connections.

A SPAC combining with a developer of micro-modular nuclear reactor technology.

Leading developer, owner, and operator of utility-scale solar energy projects.

Delivering stable, secure, and cost-effective energy solutions through large-scale battery storage.

Harnessing deep ocean geothermal energy for baseload renewable power.

Taming nuclear power's cost problems by building reactors in shipyards.

Provider of EV charging and energy solutions.

Savion is a renewable energy developer focused on utility-scale solar and energy storage projects.

Industrial company in hydrogen production and separation solutions.

Battery energy storage systems (BESS) for commercial and industrial (C&I) businesses.