Cleantech Startups

Numat develops metal-organic frameworks (MOFs) and manufactures them at industrial scale through an integrated campus with ISO 9001:2015 certified quality management. The company serves industrial customers seeking advanced materials for applications requiring precision chemistry and high-volume production.

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

Oobli develops sweet proteins derived from equatorial fruits and berries, using a fermentation process to produce a sugar alternative that is thousands of times sweeter than sugar. The company creates consumer products made with these fermentation-produced sweet proteins as a healthier form of sweetness.

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

Ossia develops and licenses Cota, an RF-based wireless power technology that delivers targeted energy to devices at a distance without pads or contact-based charging, along with receivers, transmitters, and cloud software. The company licenses its technology to OEMs worldwide serving the wireless power ecosystem.

3 investors

Ostrom provides a multilingual energy management platform that enables consumers to switch, monitor, and reduce their electricity consumption. The company operates as a green energy provider in Germany, focusing on making renewable energy more accessible and inclusive.

3 investors

Othersphere provides AI-driven site assessment and analytics to evaluate locations across infrastructure and energy projects, helping investors and developers screen opportunities, spot red flags, and reduce due diligence time. It serves teams making capital-intensive location and site-selection decisions in the energy and infrastructure sectors.

3 investors

Oxford Flow designs and manufactures industrial flow control valves, pressure regulators, and pilot valves using precision engineering and fluid dynamics. Its patented axial valve designs aim to eliminate common failure points and fugitive emissions while reducing cost, maintenance, size, and weight across industrial applications.

3 investors

Paptic is a material innovation company that developed Paptic®, a fibre-based, recyclable material designed to replace plastics in packaging. Founded in 2015 and based in Espoo, Finland, it has supplied its packaging material on an industrial scale since 2018.

3 investors

Parallel Carbon develops hardware technology to produce low-cost hydrogen, renewable fuels, and chemicals such as fertilizers and methanol as alternatives to fossil fuels. The company targets fuel and chemical producers, aiming to reduce costs and remove site constraints.

3 investors

Peak Power provides AI-enabled battery energy storage systems and optimization services that help large commercial and industrial facilities reduce peak demand charges, generate grid revenue, and cut energy costs with no upfront cost. It combines proprietary peak-prediction software with financing models, serving plant, facility, energy, and sustainability managers, with projects in Ontario, Canada and the US.

3 investors

Pelikan Mobility provides long-term leasing of electric utility vehicles combined with a fleet management software (FleetPilot) that optimizes vehicle transition timing, costs, and decarbonization trajectories for commercial fleets in France. The company serves energy, telecom, construction, and logistics companies managing large dispersed vehicle fleets.

3 investors

Phase Change makes BioPCM phase change material products used for thermal management, with applications in building insulation, telecom sites and data centers, and cold chain packaging for transporting food. Its products serve industries requiring temperature control across construction, telecommunications, and logistics.

3 investors

Piana offers an all-in-one fleet management platform that helps companies control fuel and charging expenses while reducing their fleet's carbon footprint. It provides access to fuel stations and EV charging points across Europe for business fleets.

3 investors

Piclo operates an independent online marketplace for energy flexibility, connecting owners of flexible energy assets (sellers) with grid operators and other buyers procuring flexibility services. The platform serves the electricity grid sector across multiple regions including the UK, US, Italy, Portugal, Australia, and Belgium.

3 investors

Pila makes plug-and-play home batteries that connect to a standard wall outlet to provide automatic backup power during outages and optimize household energy use, including solar charging and time-of-use bill management. The batteries link together in a mesh network so homeowners and renters can add units room by room to build a decentralized energy backup system.

3 investors

Planetary removes carbon dioxide from the atmosphere using ocean alkalinity enhancement, introducing purified alkaline minerals into coastal outfalls at existing infrastructure sites like power plants and wastewater treatment facilities. The company produces certified carbon removal credits verified by third-party monitors.

3 investors

Podero provides energy flexibility software for utilities that steers connected household devices such as EVs, heat pumps, batteries, and solar systems, and trades their flexibility on day-ahead and intraday electricity markets. It helps utilities launch new energy products, monetize device flexibility, and support grid stability across Europe.

3 investors

Ponda develops biomaterials made from fibres of Typha latifolia grown through paludiculture on regenerated wetlands, including its BioPuff insulation as an alternative to feather and synthetic fillers. It works with brands, farmers, landowners, and conservation partners to supply lower-impact textile materials while restoring wetland ecosystems and sequestering carbon.

3 investors