Top 20 CleanTech Startup Investors in Denmark (November 2026)

Portfolio highlights

• Tavion — Critical energy storage infrastructure for a sustainable future.
• SNERPA Power — SNERPA Power develops intelligent energy services.
• Helios Innovations — Helios offers on-site industrial waste management of liquid waste. Reduce waste volume by up to 90% without investment.

Portfolio highlights

• Advalight — Advalight is a young, dynamic company dedicated to providing high-quality laser equipment for dermatological treatments. The company has patented an innovative technology for use in the removal of vascular lesions, acne treatment, skin rejuvenation and many other skin-enhancing procedures. The ground-breaking product was launched the summer 2014.Advalight is based on five years of scientific work in the Physics Department at the Technical University of Denmark. The founders include two PhDs and it is their research that forms the basis of Advalight. The company's main focus is on research and development and with the right external partners we believe that the market for dermatological lasers will be transformed. Advalight is therefore seeking collaboration with external partners with established distribution and sales channels.
• Sigma Estimates — Sigma Estimates was founded in 2003 under the name CodeGroup and is less than ten years been the market leader in software solutions for the calculation.For Sigma Estimates is the main task to develop it, to encourage and improve the work of kalkulationsopgaver in the construction industry. But it must be seen in a larger context, and thereforeSigma also the ultimate tool when the company's work processes more efficient and streamlined.Sigma typically helps companies to reach a best practice to select the projects that are profitable and to foster knowledge sharing within the company.Sigma Estimates are more than any other has come to stand for quality and ease of use. The goal is to bring together IT knowledge with kalkulationsviden and have it all to go up to a higher level.
• Merus Audio — Merus Audio is an audio company that develops switching audio amplifiers. The developed audio amplifiers consist a multilevel audio amplifier technology, which is a combination of a multilevel switching topology and a dynamic power management scheme to improve efficiency and compactness. The company's product eximo MA12040/12040P andMA12070/MA12070P are used for home theater systems, TVs, sound bars, stereo systems, mobile phones, and portable media players. They cut down power losses during operations.Merus Audio was found by Mikkel Hoyerby, and Hans Andersen in 2010; and is headquartered in Herlev, Denmark.

Portfolio highlights

• Vaja — Vaja is on a mission to accelerate the transition to a net-zero world via disruptive innovations for solar farms.
• Reel Energy — Reel empowers all companies to procure renewable electricity that makes a real difference for the climate.
• Kvasir Technologies — Imagine a world without fossil fuelsThis is where we come in! We have invented a solution that makes this possible already in 2050.

Portfolio highlights

• Plentify — Plentify connects home appliances with cheaper cleaner energy. It does this with an intelligent residential load management platform which matches demand with clean energy supply for 75% cheaper than batteries. Plentify combines advanced hardware, AI, and user-centric design to create smart home products that delight customers while alsostrengthening electricity systems.
• Flox Intelligence — FLOX is bringing cutting-edge technology and Generative AI to wildlife management, addressing the challenges of human-wildlife coexistence across diverse landscapes.By streamlining and simplifying wildlife management workflows, we empower organizations to keep wild animals away from areas where they pose risks, such as airports, railways, roads,public spaces, agriculture, young forests, and other shared environments. Our autonomous solutions, grounded in advanced wildlife science and powered by Generative AI, ensure safety and efficiency, allowing our clients to focus on their core activities.With FLOX, you can achieve safer, more productive environments, ensuring harmonious coexistence between humans and wildlife.
• Ark Climate — Ark Climate is a climate-tech company that develops software to support municipal climate protection planning and execution.

Portfolio highlights

• Aegir Insights — We enable strategic decision-making about offshore wind with powerful commercial tools and bespoke research. Discover our latest insights online.

Portfolio highlights

• Praktiki — Praktiki is the AI platform for medical education: expert-led, case-based 5-minute modules HCPs love, built in hours and measured for behaviour change.
• ReportsAI — ReportsAI is an impact operating system that automates data collection and reporting for NGOs and industry to ensure audit-ready compliance.
• Plouton AI —

Portfolio highlights

• Blykalla — Blykalla is developing and building small modular reactors to deliver the next generation of clean energy. We take leading research to industrialization through our Swedish Advanced Lead Reactor (SEALER).
• Nuclearn — Most AI tools solve one problem. Nuclearn connects them all. From P&IDs to corrective actions, procedures to parts, everything runs on one platform.
• Aalo Atomics — Creating abundant and dependable clean energy to power humanity for generations.

Portfolio highlights

• Cortas — Cortas is a tech-enabled Danish property management company that offers an end-to-end, institutional-grade management service for real estate portfolios. The company replaces traditional, fragmented real estate administration by combining a dedicated team of industry experts with a proprietary digital platform to streamline operations, compliance, and financial reporting.
• Onomondo — Onomondo is a global IoT network. Our IoT SIM and cloud platform future proof your devices with full data transparency, freedom to leave, and no third parties.
• Rodinia Generation — Rodinia Generation offers environmental clothes manufacturing technologies that helps to eliminate overproduction in the fashion sector.

Portfolio highlights

• Biographica — Biographica is a biotechnology company combining AI and rapid experimentation to design and develop better plant traits.
• Overview Energy — Overview Energy is building space energy for Earth to deliver continuous energy from orbit to solar projects on the grid
• Elemental Impact — Elemental Excelerator is on a mission to redesign the systems at the root of climate change. In 2009, they launched a new non-profit model for funding climate tech deployment.

Portfolio highlights

• Ammobia — Ammobia's advanced reactor technology enables economical ammonia production at any scale. 50% lower CapEx, 10-40% lower costs for fuel, fertilizer, and energy.
• Thea Energy — Discover Thea Energy, a fusion energy company reinventing the stellarator to create a limitless source of zero emission energy for a sustainable future.
• Commonwealth Fusion Systems — The fastest path to clean, limitless fusion energy.

Portfolio highlights

• Reco — SaaS Security Leverage Reco's context analysis to streamline SaaS security, minimize data and identity risk, and automate remediation
• Verso — Verso is an AI-powered qualitative market research platform that automates consumer insights at scale. It uses adaptive AI to conduct 1-on-1 video or voice interviews with consumers worldwide, turning open-ended conversations into structured, actionable insights in under a week.
• groundcover — Instantly pinpoint bleeding issues in production & troubleshoot quickly with groundcover. All with zero code changes.

Portfolio highlights

• EnsoData — The future of sleep diagnostics demands scalable, connected intelligence across the entire sleep care journey
• Modo Energy — Energy market data, benchmarking, and projections. All in one place and backed by Modo Energy insights.
• ContactMonkey — ContactMonkey is an internal communications software to send, track and improve employee emails, newsletters, SMS and Teams posts from Outlook or Gmail.

Portfolio highlights

• Eqon — Revolutionary heat management with up to 80% lower consumption. EQON provides smart solutions for energy, smart cities, and offshore.
• Nature Robots — Nature Robots is a young robotics and AI start-up with the aim of supporting regenerative agriculture. Social challenges such as global climate change, rising global populations and increasing local trade for organic food require resilient and local bio-intensive farming systems. Nature Robots develops new technological solutions for humans, nature and technology, such as long-term autonomous agricultural robots that use outdoor navigation to navigate uneven and semi-structured terrain and record high-resolution 3D maps of plants in terms of time and space in order to provide recommendations for gardeners.
• Rodinia Generation — Rodinia Generation offers environmental clothes manufacturing technologies that helps to eliminate overproduction in the fashion sector.

Portfolio highlights

• VEIR — Discover VEIR's cutting-edge technology for superconducting power lines that offer 5-10x greater transfer capacity and 90% less resistive line losses.
• Superlight — 19-tonne cargo volume in a 7.5-tonne platform. 73% savings per pallet per kilometre.
• CorePower Magnetics — CorePower Magnetics delivers U.S. manufactured, high-efficiency, power-dense inductors, transformers, and motors using amorphous and nanocrystalline materials.

Portfolio highlights

• PATS — PATS Indoor Drone Solutions provides intelligent pest monitoring and control systems designed for your greenhouse. Our software targets adult pests before they can spread.
• BioScout — Welcome to BioScout, your partner in revolutionizing the agriculture industry with cutting-edge automated disease detection technology for crop growers and viticulture.
• Sensie — Sensie translates direct physiological signals into clear, daily cultivation decisions. Stop guessing, optimize resources, and maximize your yield.

Portfolio highlights

• Kodama Systems — Kodama Systems is developing technologies to improve forest health and reduce the risk of destructive wildfire
• Type One Energy — Type One Energy is a fusion power system developer whose goal is to provide clean fusion power to cities. Through innovations in high-temp superconducting magnets and additive manufacturing, the company's system connects the compact, cost-effective stellarator fusion power plant to the grid, allowing people to access power when it is needed.
• Prolific Machines — Difficult protein production made simple. A next-generation expression system for next-generation therapeutics.

Portfolio highlights

• Rilian Technologies — Rilian develops cybersecurity and defense technology platforms that enable organizations to deploy, integrate, and operate advanced security tools across complex and regulated environments. The company provides an AI-driven security orchestration platform that unifies multiple cybersecurity tools into a single interface, allowing analysts toautomate workflows, monitor threats, and respond to incidents more efficiently. Its offerings include systems for automated deployment and compliance that allow security technologies to operate in air-gapped, sovereign, and highly regulated environments without relying on traditional cloud infrastructure. The company also maintains a curated ecosystem of cybersecurity tools that are pre-integrated and validated for use in mission-critical settings, reducing complexity in adoption and integration.
• Hark — At Hark, we are building the most advanced personal intelligence in the world.
• Blue Energy — Factory-built nuclear plants delivered in 3 years at $5k/kW. Blue Energy makes nuclear power financeable and repeatable on a global scale.

Portfolio highlights

• Ravel — Ravel revolutionizes textile recycling through purification technology, effectively separating and repurposing blended materials. Join us in shaping a circular textile economy.
• Reuse — Reuse is an end-to-end online marketplace for buying and selling refurbished electronics in LATAM.
• Mojave Energy Systems — Mojave Energy Systems is a company that provides air conditioning solutions that reduce energy use, improve indoor comfort, and lower costs.

Portfolio highlights

• Blue Energy — Factory-built nuclear plants delivered in 3 years at $5k/kW. Blue Energy makes nuclear power financeable and repeatable on a global scale.

Portfolio highlights

• Adsmurai — Adsmurai presents the solution to plan, launch, measure, and scale your Paid Media campaigns across all platforms.
• Wiremind — Wiremind is a start-up dedicated to the field of Revenue Management & Pricing decision tools for the transportation & tourism sector.
• NeuralTrust — Protect your AI Agents and Applications from attacks, hallucinations and data leakages with our AI native entreprise-grade cybersecurity solutions