Energy Startups

Krosslinker develops aerogel-based materials for thermal insulation, including cooling paints, composite boards, and silica aerogel powders. Its products target industrial and building applications requiring lightweight, high-performance insulation.

4 investors

Lava is a climate-tech startup developing isothermal heat-engine and heat-pump technology, including research into knitted metallic structures, metamaterials, and phase-changing materials, to generate clean power at megawatt scale. Its systems aim for high thermal efficiency alongside factory-ready manufacturability.

4 investors

LI-IND develops patent-protected, closed-loop production technology for making low-cost, high-performance battery materials. The company automates traditionally manual processes to reduce economic and environmental costs and secure the supply of critical battery materials.

4 investors

Lumen develops software and services to help real estate owners monetize their properties through distributed clean energy installations. The platform automates the complex underwriting and deal structuring process across multiple markets and properties.

4 investors

Lumenaza provides a SaaS platform for energy utilities, suppliers, and new market entrants to manage direct marketing, billing, customer relationships, and grid operations in the German energy market. The platform enables utilities and energy traders to operate as power suppliers with end-to-end solutions including market communication, billing automation, and flexibility management.

4 investors

Manie is an online platform that analyzes a user's electricity and gas bill to compare energy tariffs across suppliers and handle the switching process on the customer's behalf, including an AutoSwitch feature that changes contracts automatically when a better offer appears. It serves residential energy consumers in Portugal and is free for users, earning commissions from energy suppliers.

4 investors

Mantle8 is a natural hydrogen exploration company developing proprietary geoscience technology—including its GeoLogix prospect-generation algorithm and HOREX multiphysics imaging—to locate and quantify naturally occurring hydrogen resources. It aims to produce commercially viable natural hydrogen as a fuel for industrial applications, building on geological research originally conducted at its predecessor consultancy M&U.

4 investors

Marel builds ultra-compact power-conversion building blocks — power modules and power stacks — that integrate semiconductor packaging and cooling to reduce the size, weight, and cost of high-power converters, inverters, and breakers. It serves system builders in mobility, defense, and data centers, offering products compatible with silicon and silicon carbide and available for purchase or through IP licensing.

4 investors

Marengo uses AI to automate engineering design for data centers, aiming to speed up and reduce the cost of the design process. It works with large-scale data center builders.

4 investors

Material develops HYBRID3D, a proprietary manufacturing platform that produces full-stack batteries in-situ—including anode, cathode, separator, and casing—without molds, enabling batteries to be shaped to fit curves, edges, and voids. The company designs in-house nanomaterial chemistries and current collector-free battery architectures that scale from prototype to production without retooling.

4 investors

Maverickx develops precision chemical solutions for resource extraction and processing across oil & gas, metals, water, and chemical industries. The company creates non-hazardous, biodegradable chemistries derived from organic feedstocks designed to improve extraction efficiency and environmental safety.

4 investors

MCJ Collective is a venture firm that invests in founders building companies in climate, clean energy, and related industries, and produces an "Inevitable" podcast and newsletter covering the sector. Its portfolio spans areas such as data centers, grid technology, long-duration energy storage, and domestic copper production.

4 investors

Mercanis provides a software platform that combines AI agents with human expertise to automate and optimize procurement processes, including sourcing, supplier management, and tendering for enterprise teams.

4 investors

Mesodyne develops patented electricity generation technology, including LightCell, for military and commercial users requiring portable and durable power solutions.

4 investors

Metafuels develops sustainable aviation fuel through its aerobrew technology, taking the process from lab scale to demonstration and commercial plants. The Switzerland-based company focuses on decarbonising the aviation sector.

4 investors

Metris is an AI-native operating system for renewable energy owners and operators, integrating asset data and automating workflows such as billing (FiT, PPA, CfD), O&M, and document management. It serves independent power producers (IPPs) and O&M teams managing renewable portfolios, including solar and battery energy storage systems.

4 investors

MODO provides software and data analytics for energy asset owners and investors, enabling portfolio benchmarking, underwriting, risk assessment, and real-time trading optimization in the renewable energy and storage sectors.

4 investors

Mojave manufactures liquid desiccant HVAC systems that independently control humidity and temperature with lower energy consumption than conventional systems. The company offers two product lines: packaged rooftop units and hydronic air handling units for building climate control.

4 investors

Monalee provided residential solar and battery storage installations to homeowners; as of September 2025 it paused all new solar and storage installations to shift its focus toward technology and support, while continuing to service existing customers' systems.

4 investors

Mysa makes smart thermostats for high-voltage electric heating systems such as electric baseboard, fan-forced in-wall, hydronic baseboard, and in-ceiling radiant heaters, offered in energy-monitoring and lower-priced LITE models. The devices connect to a mobile app and work with Google Home, Amazon Alexa, and Apple HomeKit, and support utility demand response programs for residential users in cold climates.

4 investors

Naco Technologies develops nano coatings using high-speed ion-plasma magnetron sputtering technology, initially for automotive parts and now focused entirely on the hydrogen industry. Founded by material scientists in Latvia, the company applies its coating R&D toward hydrogen energy goals.

4 investors

Natel Energy develops FishSafe turbine runners for hydropower plants, available in Francis, Kaplan, and propeller configurations that retrofit into existing civil works to improve efficiency while enabling high through-turbine fish passage survival. The company serves grid operators and hydropower asset owners aiming to modernize aging fleets and meet environmental fish-passage mandates.

4 investors

NRN appears to operate a smart grid or energy program that pays participating hosts a monthly "Smart Grid Credit" applied directly to their bill, with quarterly reviews to adjust payments to market rates. The page provides limited detail beyond this host-payment model.

4 investors

NeoCarbon converts industrial waste heat into captured CO₂, cooling, and recovered water by retrofitting existing industrial cooling and waste-heat infrastructure. The Berlin-based company serves industrial manufacturers looking to decarbonize while recovering value from their existing assets.

4 investors