Energy Startups

Metafuels develops aerobrew®, a proprietary technology that converts green methanol into sustainable aviation fuel (e-SAF) for airlines and fuel manufacturers. Developed in partnership with the Paul Scherrer Institut, the process aims to enable large-scale, lower-cost SAF production to help the aviation industry cut carbon emissions.

3 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.

3 investors

Mineralsoft provides AI-powered software and analytics for mineral and oil & gas investors to analyze financial performance, track assets, manage mineral interests, and evaluate investments in wells and properties across North America. The platform combines title research, economic forecasting, portfolio tracking, and marketplace functionality for mineral acquisition and trading.

3 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.

3 investors

Modvion builds wind turbine towers from laminated wood as an alternative to conventional materials, aiming to lower carbon emissions and costs in wind power. The company operates in the renewable energy and materials sector, targeting the wind power industry.

3 investors

Mojave Energy Systems manufactures high-efficiency HVAC systems using liquid desiccant technology for commercial buildings, delivering superior dehumidification and energy savings of 30-60% compared to conventional systems. The company's ArctiDry product family includes both direct-exchange and hydronic air handling units designed to reduce latent cooling loads and extend chiller capacity.

3 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.

3 investors

Monaire develops AI-powered systems to redefine commercial HVAC and refrigeration, delivering improved comfort, efficiency, and sustainability. The company serves commercial facilities and proptech customers seeking eco-friendly heating and cooling solutions.

3 investors

Moonwatt develops energy optimization and management software for grid-scale operations, leveraging renewable energy storage systems. The company applies its team's decade of experience deploying solar and battery systems across continents to build grid infrastructure software.

3 investors

Naco develops PVD high-speed magnetron sputtering nano-coatings for green energy components such as electrolyzers, fuel cells, and batteries, including bipolar plates, porous transport/gas diffusion layers, and catalytic coatings on PEM and AEM hydrogen technologies. The coatings improve durability, prevent corrosion and hydrogen embrittlement, and reduce use of noble materials, and are designed for mass production.

3 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.

3 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.

3 investors

Ndustrial provides the Nsight energy optimization platform that unifies data from energy use, production, controls, and external datasets like energy markets and weather to reduce energy waste in cold chain operations. It serves cold storage and logistics providers as well as retail and food service operators running complex, multi-site temperature-controlled facilities.

3 investors

Nectar builds a utility intelligence platform that aggregates energy consumption data from utility bills and online portals to help companies optimize their energy usage and costs. The platform serves organizations seeking to reduce their energy spend and carbon footprint by providing the data infrastructure needed to identify cleaner energy sources and better rates.

3 investors

Generac makes home generators, portable power products, and energy storage systems for emergency and backup power. The company serves homeowners with products for backup power, energy storage, and on-the-go power needs.

3 investors

nT-Tao develops compact 20 MWe fusion systems, marketed as Tao Energy Boxes, designed to provide distributed, 24/7 firm on-site power on or off the grid. It targets energy-intensive infrastructure such as datacenters and AI power, maritime and ports, national and critical infrastructure, and EV fleet charging.

3 investors

Nuclear Turbines develops advanced modular nuclear generation systems in which a reactor directly heats compressed air to drive a commercial gas turbine, targeting low-cost electricity. It aims to serve markets with high power demand such as AI, advanced manufacturing, and strategic industry where electricity cost is a growth constraint.

3 investors

Octopus Energy is a British renewable-energy supplier that powers over 10 million homes across the UK and internationally with green energy tariffs and customer service, and develops smart energy technology and hardware. It operates as a global group spanning renewable generation, EV services, heat pumps, and energy software, active in the UK, Germany, USA, Japan, Spain, Italy, France, and New Zealand.

3 investors

Okra Solar supplies plug-and-play mesh-grid hardware kits — including smart charge controllers, meters, batteries, solar panels, and inverters — that energy access companies use to connect households to decentralized off-grid power. Its IoT-enabled, low-voltage DC systems target rural electrification, with deployments in Sub-Saharan Africa and Nigeria.

3 investors

Oktogrid makes non-invasive sensing hardware and analytics that add a real-time digital data interface to distribution transformers, installable in about ten minutes without an outage. It serves electricity providers and grid professionals in Europe, offering monitoring, fault detection, load profiling, and capacity forecasting for grid asset management.

3 investors

Open Hydro develops technology to assess and mitigate greenhouse gas emissions from freshwater systems, including reservoir emissions, providing climate mitigation and resilience insights for hydropower utilities and water industries. It serves water users and utilities worldwide with emissions management and climate action tools.

3 investors

Open Access Energy runs a platform that connects private energy generators (Independent Power Producers and traders) with large energy buyers over publicly owned grids, handling wheeling transactions, contract automation, and per-transaction revenue management. It also offers smart metering, tariff automation, billing, and real-time dashboards for municipal electricity operations.

3 investors

OpenSolar provides free software for solar professionals to design, sell, and manage solar installation projects, and connects homeowners and businesses with solar installers. It also offers a partner program for product and service providers in the solar and renewable energy industry.

3 investors

Opt-E offers, implements, and operates energy-saving solutions together with selected partners and supplies energy at competitive terms. It helps businesses reduce energy costs and environmental impact.

3 investors