Alternatives to Capstone Green Energy Holdings

Revolutionizing data center power management with solid-state transformer technology.

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

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

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

Develops and manufactures hydrogen fuel cell generators for defense and commercial use.

Exowatt develops modular, dispatchable solar energy systems for energy-intensive industries.

Green tech firm developing AI data centers powered by renewable energy in arid regions.

Battery company focused on energy storage solutions.

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

Zola Electric provides clean energy solutions, including solar and battery storage, for homes and businesses.

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

Alpenergia is a startup focused on developing innovative solutions for sustainable energy and smart grid management.

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

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

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

Global leader in smart energy technology, providing solar inverters, power optimizers, and energy storage systems.

Developing disruptive technologies for lithium extraction and battery storage to accelerate the clean energy transition.

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

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

Sustainable infrastructure platform providing affordable, reliable resource solutions for companies, communities, and cities.

A full-stack residential solar platform for households and housing societies.

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.

Develops and delivers holistic energy systems for commercial businesses, combining battery storage with intelligent energy management.

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.

European electric vehicle charging infrastructure company.

Data center infrastructure developer providing power sources and site development, focusing on clean-powered, shovel-ready sites for energy-intensive workloads like AI.

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

Nation's leading platform for distributed energy infrastructure built on commercial real estate.

Fusion energy startup aiming for commercial power generation.

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

Industrial thermal energy storage solutions using sand.

Ultra-high temperature thermal energy storage solutions for industrial decarbonisation.

Energy-as-a-Service platform for businesses.

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.

Geospatial AI platform that accelerates renewable energy project development by automating site selection, permit processing, and grid connection analysis.

Global leader in developing, financing, and operating utility-scale solar energy projects.

Voltify is electrifying the rail industry by retrofitting diesel locomotives with battery power and a smart microgrid charging network.

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

Harnessing deep ocean geothermal energy for baseload renewable power.

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

Partnering with utilities for grid modernization and energy storage solutions.

ZincFive is a specialized battery maker supplying data centers.

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

Danish biofuel startup developing a patented process to convert lignin-based residues into climate-neutral marine fuels.

Aquarius Engines develops and manufactures a lightweight, compact, and highly efficient single-piston linear engine for various applications.

Advanced biofuels company focused on accelerating growth.

Seetrum promotes energy efficiency through solutions, insurance, and training.

AI and thermal energy storage to cut the cost and energy demand of industrial cooling.

Qasar is building the global energy-to-compute network, transforming abundant renewable energy into AI infrastructure.

Specialists in renewable energy solutions, including solar PV, battery storage, and EV charging, for residential and commercial clients.

RED is a company focused on energy and climate tech, particularly in the renewable energy sector.

Developing predictable renewable power systems from tidal flow.

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

A platform for businesses to monitor, control, and optimize their renewable energy installations.

Designs, manufactures, and sells electric vehicles, battery energy storage, and solar energy products.

Gridoro provides an all-in-one marketing platform to automate business processes for lead management, follow-ups, appointment booking, and website building.