Top 10 Renewable Energy VC Funds & Investors in Estonia (November 2026)

Portfolio highlights

• Esgrid — Esgrid provides value-chain sustainability management solutions to medium-sized businesses and financial institutions.
• Soldera — Soldera is unifying energy certificate registries. We give corporate energy buyers, sustainability teams, procurement teams, utilities, and traders one infrastructure layer across fragmented registries so they can procure, manage, and cancel renewable energy certificates with far less manual work.The platform combines aggregated procurement fromthousands of utilities with cleaner registry execution and audit-ready, government-backed cancellation statements traceable to the generating machine. That makes renewable energy certificate management easier to run, easier to evidence, and easier to scale across markets.
• Blackswan Space — for satellite integrators and operators to enable the next step in in-orbit capabilities

Portfolio highlights

• Stargate Hydrogen — Stargate Hydrogen is a European deep-tech company focused on advancing the production of green hydrogen with novel Stacks and turn-key Alkaline Electrolysers.

Portfolio highlights

• Einsted — Einsted is an biotechnology company based in Argentina, developing a BioElectroProcessor for bioindustrial processes optimization. Our goal is to generate NanoPulsed Reactions (NPR) for the Food, Pharma and Cosmetic industries.
• RedoxNRG — RedoxNRG develops advanced carbon capture and conversion technology to transform CO₂ into green fuel using renewable energy.
• RAIKU — RAIKU is a cleantech startup that produces 100% natural packaging material that has also great looks and shock absorption - most importantly, it gives 15-20 times more volume to its raw material making it one of the most resource efficient material uses in the world with high margins. Both the production is and products are clean making no harm tonature. RAIKU has raised over 1.2mln€ in the pre-seed stage, built a team of over 10 people, its own IP and clients are already using its packaging material. This material will up-end the 1 trillion € packaging sector.

Portfolio highlights

• Kastle — One platform that keeps originations, fulfillment, and servicing moving 24/7, built for regulated work and connected to the systems you already use.
• a1Mobile — Your carrier, now AI-native.
• Footprint — Footprint provides an AI-powered risk and compliance platform that automates investigations and manages compliance workflows for financial institutions. Its agentic AI system, Percy, investigates cases, analyzes data, identifies patterns, and executes policies and procedures. The platform generates auditable reports with citations, timestamps, and documented reasoning, while maintaining organizational knowledge across compliance functions such as know-your-customer (KYC), enhanced due diligence (EDD), sanctions screening, and transaction monitoring.

Portfolio highlights

• Bioreactor — Bioreactor is a revolutionary technology that converts bio waste into clean energy through biomass gasification. It's a sustainable, efficient and cost-effective solution that addresses energy poverty, energy security and climate change. With the use of the latest technology in computational fluid dynamics, cloud-optimized digital twin anddeep learning algorithms, the Bioreactor can optimize its performance in real-time over a wide range of fuels and operating conditions. The Bioreactor is a game changer in the energy industry, it can reduce greenhouse gas emissions, drastically lower energy costs, and help to alleviate energy poverty on a national scale.
• Safegrid — Smarter sensors for a smarter grid
• Vensum Power — Revolutionizing power conversion. More power in same package, less energy waste and low maintenance.

Portfolio highlights

• vyzn — Vyzn is a construction planning software focused on life cycle assessment to help projects reduce CO2 emissions and grey (embodied) energy. It targets teams that want to plan construction projects efficiently while meeting sustainability goals.
• Acembee — Acembee is an AI-driven platform designed to automate the tracking, data collection, and reporting of LCA A4+A5 (Life Cycle Assessment phases related to construction site energy use and transport) for construction projects. provides solution that consolidates data from the building site into one platform, enabling precise, real-time insights intoenergy consumption, CO₂ emissions, and compliance with legal environmental requirements. Acembee saves significant time, reduces unnecessary energy use by up to 40%, and helps projects stay within allowed CO₂ limits, ultimately making sustainability management on construction sites.
• Birdsview — Sensor fusion of GPR radar, lidar and camera plus AI analysis: see inside any concrete structure without breaking it.

Portfolio highlights

• Verda — Verda provides a full-stack AI cloud platform for the development, training, and deployment of AI models. Its services include GPU instances, instant clusters, serverless containers, managed storage, and other cloud infrastructure powered by NVIDIA hardware. Verda also operates an AI Lab focused on large-scale training, inference optimization, reinforcement learning, and AI systems engineering. Its platform serves AI developers and organizations across the full AI lifecycle, from prototyping to scalable inference.
• Thor Dynamics — Headquartered in Orlando, Florida, with a European base in Finland, Thor Dynamics specializes in directed energy systems for defense against drones and drone swarms. The company’s innovative solutions are available worldwide to protect critical infrastructure and enhance national security. Laser Armor™ is a complete directed energy counter-dronesolution. Utilizing advanced radar and optical systems it can detect, track, and target hostile targets. High-power directed energy from Thor’s Laser Engines then eliminates the threat in seconds. Multiple safety systems ensure accurate target identification and minimal collateral damage.
• Coherence Quantum — Coherence Quantum is a quantum hardware company that creates integrated cryogenic signaling and control platforms designed for solid-state quantum computers.

Portfolio highlights

• GaltTec — GaltTec focuses on developing and marketing microtubular solid oxide fuel cells. GaltTec specializes in drones, off-grid equipment, IoT, portable devices, and space equipment. GaltTec was founded in 2022 and was headquartered in Tartu, Estonia.
• Bisly — Bisly is an Estonian startup developing intelligent building solutions.
• Nanordica Medical — Nanordica Medical develops novel nanoparticle-based antibacterial wound care products.

Portfolio highlights

• NobodyWho — NobodyWho is a Copenhagen-based software startup specializing in AI inference engines for running large language models (LLMs) locally and efficiently on any device.
• FION Energy — FION Energy GmbH is a Berlin-based company at the forefront of the clean energy transition, specializing in advanced energy storage and management solutions for industrial businesses. Their technology helps companies optimize energy use, reduce costs, enhance grid stability, and accelerate decarbonization by providing economically viable storagesystems tailored to each customer's needs. FION supports grid operators by enabling efficient orchestration of energy consumption and generation, contributing to a more stable and sustainable energy future. They offer personalized consulting, rapid installation, and continuous optimization of energy storage performance to maximize cost savings and flexibility.
• Bubble Robotics — Bubble deploys resident autonomous underwater robots for 24/7 offshore infrastructure monitoring. 70% cost reduction, zero CAPEX, fully unmanned operations.

Portfolio highlights

• Verda (formerly DataCrunch) — DataCrunch is a cloud service provider which facilitates utilization and integration of state of the art AI/ML models
• Lightyear — Lightyear is a simple and approachable way to invest your money globally without unnecessary barriers and fees.
• Starship Technologies — The future of delivery - today!