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Top 10 CleanTech Startup Investors in Austria (June 2026)

The most active venture capital funds and angel investors investing in Austria CleanTech startups. This investor list is updated monthly from the Shizune investor database, ranked by number of investments in Austria CleanTech startup companies. Find investors to raise a Pre-Seed, Seed or Series A round with Shizune.
Investor Relevant Deals Geography Stage Focus Round Size
Christian Kaar
Angel
3 Austria, United Kingdom Seed, Angel Apps, Software, Information Technology $650k–$3.6M
Peak Pride
VC Fund
2 Austria, Germany Seed, Series A, Pre-Seed Health Care, Medical, Health Diagnostics $165k–$6.5M
The Austrian Research Promotion Agency (FFG)
VC Fund
2 Austria, United States, Belgium Grant, Seed, Pre-Seed Software, Artificial Intelligence, Medical $67k–$3.5M
AWS Double Equity
VC Fund
2 Austria Seed Apps, CleanTech, GreenTech
aws Gründungsfonds
VC Fund
2 Austria, Germany, United States Seed, Series A Software, SaaS, Information Technology $1.1M–$12M
Alfred Luger
Angel
2 Austria, Germany, United Kingdom Seed, Angel, Pre-Seed Software, Apps, E-Learning $650k–$3.6M
Susanne Porsche
Angel
1 Austria Seed Apps, CleanTech, GreenTech
Heinz Hahn
Angel
1 Austria Seed Apps, CleanTech, GreenTech
Triple Impact Ventures
VC Fund
1 Germany, France, Austria Seed, Pre-Seed Software, GreenTech, Renewable Energy $1.4M–$5.9M
Roman Scharf
Angel
1 United States, Austria Series A, Series B, Pre-Seed Energy, FinTech, Medical $20M–$26M
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Investor list

Christian Kaar
Angel · Austria, Pangasinan, Philippines · 3 investments in Austria CleanTech startups

Christian Kaar is the VP of Finance and Business Analytics at Leaders21com. Christian Kaar attended University of Applied Sciences Upper Austria.

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Investment focus

  • Industry: Apps, Software, Information Technology
  • Stage:Seed, Angel
  • Geography: Austria, United Kingdom

Investor stats

  • Total investments: 7
  • Round size: Seed $650k–$3.6M
  • Lead/follow: 0% lead, 100% follow

Portfolio highlights

  • Inoqo — In a world of over, mis- or blurred information, inoqo wants to provide consumers with scientific-based data on the environmental, social and biodiversity impact of familiar grocery products. Our mission is to help all of us aligning our daily purchasing decisions to our key concerns so that we can actively contribute to a sustainableproduction-consumption cycle.The app uses a specific innovative technology that can passively and smartly track the user’s grocery basket for informing them about -for example- the CO2 impact of their purchase and how aligned it is to their environmental priorities or social valuesThe solution will actively recommend alternative products of lower impact and encourage them through personalized content, gamification and community challenges to further pursue a sustainable lifestyle.We strongly believe that our daily habits can change the world. Our vision is to enable millions of consumers around the globe to learn why and how their consumption decisions impact biodiversity, climate and their own well-being. We want to accelerate the change towards sustainable production: as users consume more responsibly, they create healthy competition between companies who start to produce responsibly.We have ten years left to cut our CO2 emissions by half. From now on, every action counts. Join inoqo.
  • Paired — Paired is your guide to improve your relationship via fun daily questions, couple quizzes, couple games and relationship advice. Try the Paired couples app free now.
  • Mimo — Mimo is an app that teaches the computer science in a fun and interactive way. Mimo’s lessons are fun and interactive, fit into people’s everyday lives, and lead them to make a habit of self-improvement. Getting through to more than 1.5 million people and achieving completion numbers far above the industry average, Mimo is well on its way tobecoming the one-stop shop for education and entertainment on the go.
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Peak Pride
VC Fund · Vienna, Wien, Austria · 2 investments in Austria CleanTech startups

Multi family office investing in proptech, digital health & sustainability

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Investment focus

  • Industry: Health Care, Medical, Health Diagnostics
  • Stage:Seed, Series A, Pre-Seed
  • Geography: Austria, Germany

Investor stats

  • Total investments: 10
  • Round size: Seed $165k–$658k; Series A $2.2M–$6.5M
  • Lead/follow: 30% lead, 70% follow

Portfolio highlights

  • Greenpass — Greenpass is a ClimateTech company providing the official greenpass for climate proof real estate. Build resilience and manage climate-proof assets and portfolios in line with ESG regulations while maximizing return on invest and value with ease.
  • Kranus Health — Kranus Health is a global provider for Men‘s Health Prescription Digital Therapeutics (PDTs). Our therapies make millions of men live a better and longer life and enable doctors to treat their patients more efficiently.
  • HelloBello — HelloBello offers freshly cooked and cooled delivered human-grade food tailored to each dog’s nutritional needs. HelloBello is a PetTech company with a strong focus on the German speaking markets (for now). HelloBello’s personalized meals are free of any by-products and are portioned, packaged, and delivered directly to your door. By working with aspecialized veterinarian, HelloBello is able to derive each dog’s exact nutritional needs based on a proprietary algorithm. The recipes are made of natural sources like millet and seaweed, instead of heavy use of supplements, which makes it easier for the dog to absorb and get true nutritional benefits.Our credo in German is " ... Frisch. Individuell. Geliefert. - Frischfutter ist einfach besser ..."
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The Austrian Research Promotion Agency (FFG)
VC Fund · Vienna, Wien, Austria · 2 investments in Austria CleanTech startups

The Austrian Research Promotion Agency (FFG) is the national funding agency for industrial research and development in Austria. As a "one-stop shop" offering a diversified and targeted programme portfolio, the FFG gives Austrian businesses and research facilities quick and uncomplicated access to research funding.The FFG was foundedon 1 September 2004 (pursuant to the FFG Act on establishing a research promotion agency, Federal Law Gazette I No. 73/2004). The FFG is wholly owned by the Republic of Austria, represented by the Federal Ministry for Transport, Innovation and Technology (bmvit) and the Federal Ministry of Science, Research and Economy (BMWFW). As a provider of funding services, however, the FFG also works for other national and international institutions.

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Investment focus

  • Industry: Software, Artificial Intelligence, Medical
  • Stage:Grant, Seed, Pre-Seed
  • Geography: Austria, United States, Belgium

Investor stats

  • Total investments: 70
  • Round size: Seed $300k–$2.2M; Grant $67k–$3.5M; Pre-Seed $480k–$1.9M
  • Lead/follow: 27% lead, 73% follow

Portfolio highlights

  • OPTIMUSE — Optimuse provides an AI-based solution that supports the pre-design phase of building renovation. The platform converts building data into a digital twin to create accurate models for planning. It integrates data such as room types, thermal properties, and HVAC systems. The system runs energy simulations to calculate heating, cooling, lighting, andequipment needs. It helps design technical systems by defining the quantity, sizing, and configuration of components. The platform develops renovation plans by modeling financial, energy, and emissions outcomes. It also offers tools for cost calculation, performance monitoring, and collaboration across project teams.
  • sequestra — Sequestra is developing a technology platform that allows for permanent binding of CO₂ in industrial residues such as steel slag, incineration ash, and demolition waste while making the carbonated materials usable for construction applications.
  • Another Earth — Another Earth is building an AI-powered simulation and synthetic data platform for Earth Observation. As our planet changes, AI models need scalable, high-quality training data to keep pace. Another Earth provides synthetic data, scenario simulations and predictions required to accelerate AI development, and enable faster, smarterdecision-making—enabling smarter decisions for a more resilient world.
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AWS Double Equity
VC Fund · 2 investments in Austria CleanTech startups

AWS Double Equity

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Investment focus

  • Industry: Apps, CleanTech, GreenTech
  • Stage:Seed
  • Geography: Austria

Investor stats

  • Total investments: 2
  • Lead/follow: 0% lead, 100% follow

Portfolio highlights

  • Inoqo — In a world of over, mis- or blurred information, inoqo wants to provide consumers with scientific-based data on the environmental, social and biodiversity impact of familiar grocery products. Our mission is to help all of us aligning our daily purchasing decisions to our key concerns so that we can actively contribute to a sustainableproduction-consumption cycle.The app uses a specific innovative technology that can passively and smartly track the user’s grocery basket for informing them about -for example- the CO2 impact of their purchase and how aligned it is to their environmental priorities or social valuesThe solution will actively recommend alternative products of lower impact and encourage them through personalized content, gamification and community challenges to further pursue a sustainable lifestyle.We strongly believe that our daily habits can change the world. Our vision is to enable millions of consumers around the globe to learn why and how their consumption decisions impact biodiversity, climate and their own well-being. We want to accelerate the change towards sustainable production: as users consume more responsibly, they create healthy competition between companies who start to produce responsibly.We have ten years left to cut our CO2 emissions by half. From now on, every action counts. Join inoqo.
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aws Gründungsfonds
VC Fund · Vienna, Wien, Austria · 2 investments in Austria CleanTech startups

aws Gründerfonds is Austria's 70m venture capital fund. We invest as co-investor in Austrian high-growth start-ups in their later seed and (pre-)series-A stages.

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Investment focus

  • Industry: Software, SaaS, Information Technology
  • Stage:Seed, Series A
  • Geography: Austria, Germany, United States

Investor stats

  • Total investments: 85
  • Round size: Seed $1.1M–$5.2M; Series A $1.1M–$12M
  • Lead/follow: 13% lead, 87% follow

Portfolio highlights

  • Upnano — Upnano engages in the manufacture and commercialization of 3D printing systems.
  • OPTIMUSE — Optimuse provides an AI-based solution that supports the pre-design phase of building renovation. The platform converts building data into a digital twin to create accurate models for planning. It integrates data such as room types, thermal properties, and HVAC systems. The system runs energy simulations to calculate heating, cooling, lighting, andequipment needs. It helps design technical systems by defining the quantity, sizing, and configuration of components. The platform develops renovation plans by modeling financial, energy, and emissions outcomes. It also offers tools for cost calculation, performance monitoring, and collaboration across project teams.
  • vitrealab — Enlighten. Your perspective. Light Engines for AR glasses.
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Alfred Luger
Angel · Austria, Pangasinan, Philippines · 2 investments in Austria CleanTech startups

Alfred Luger

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Investment focus

  • Industry: Software, Apps, E-Learning
  • Stage:Seed, Angel, Pre-Seed
  • Geography: Austria, Germany, United Kingdom

Investor stats

  • Total investments: 17
  • Round size: Seed $650k–$3.6M; Angel $713k–$1M; Pre-Seed $768k–$1.9M
  • Lead/follow: 6% lead, 94% follow

Portfolio highlights

  • eco.mio — eco.mio enables companies to reach their climate targets while realizing significant savings: Incentivize employees to travel consciously with eco mio's end-to-end integrated software solution.
  • Viora - visible through confidence — Ada Growth is on a mission to put a mentor in every woman's pocket. We combine AI with microlearning to provide professional growth and development tools for women in the workplace and help companies attract, retain, and grow female talent. Download the Ada App today!The Ada App is a microlearning app that provides 2 minute short formvideos, miniquizzes, action items, and summaries that lead to long-term behavioral changes in the workplace. It also contains a digital mentor that can provide dynamic coaching in the spirit of the Ada App library of content, so that Ada App users have access to casual lessons when they have a few minutes a day as well as immediate feedback for any upcoming situation.Ada Growth serves the B2B enterprise and SME space primarily to companies with over 400 employees. We sell a professional growth / EdTech / L&D solution to HR, Employee Training and DEI administrators. We are vertical agnostic and provide a growth experience for both white collar and blue collar workers. Most EdTech solutions tend to flow to the corporate office layer of an enterprise, where this is a saturation of resources available. Many of our users have not been given professional growth tools purposefully built for them before or made flexible for their lifestyle, unlocking value for both the employee as well as the employer.We are the first enterprise-ready professional EdTech solution built specifically for women.
  • 123-Transporter — Transporter mieten ab nur 45€ Volle 24h | Unlimitierte KM | digitale Vignette inkl. Einfach. Flächendeckend. Kundenzentriert: https://de.trustpilot.com/review/123-transporter.at
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Susanne Porsche
Angel · 1 investments in Austria CleanTech startups

Susanne Porsche

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Investment focus

  • Industry: Apps, CleanTech, GreenTech
  • Stage:Seed
  • Geography: Austria

Investor stats

  • Total investments: 1
  • Lead/follow: 0% lead, 100% follow

Portfolio highlights

  • Inoqo — In a world of over, mis- or blurred information, inoqo wants to provide consumers with scientific-based data on the environmental, social and biodiversity impact of familiar grocery products. Our mission is to help all of us aligning our daily purchasing decisions to our key concerns so that we can actively contribute to a sustainableproduction-consumption cycle.The app uses a specific innovative technology that can passively and smartly track the user’s grocery basket for informing them about -for example- the CO2 impact of their purchase and how aligned it is to their environmental priorities or social valuesThe solution will actively recommend alternative products of lower impact and encourage them through personalized content, gamification and community challenges to further pursue a sustainable lifestyle.We strongly believe that our daily habits can change the world. Our vision is to enable millions of consumers around the globe to learn why and how their consumption decisions impact biodiversity, climate and their own well-being. We want to accelerate the change towards sustainable production: as users consume more responsibly, they create healthy competition between companies who start to produce responsibly.We have ten years left to cut our CO2 emissions by half. From now on, every action counts. Join inoqo.
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Heinz Hahn
Angel · Vienna, Wien, Austria · 1 investments in Austria CleanTech startups

Heinz Hahn is an Angel Investor .

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Investment focus

  • Industry: Apps, CleanTech, GreenTech
  • Stage:Seed
  • Geography: Austria

Investor stats

  • Total investments: 1
  • Lead/follow: 0% lead, 100% follow

Portfolio highlights

  • Inoqo — In a world of over, mis- or blurred information, inoqo wants to provide consumers with scientific-based data on the environmental, social and biodiversity impact of familiar grocery products. Our mission is to help all of us aligning our daily purchasing decisions to our key concerns so that we can actively contribute to a sustainableproduction-consumption cycle.The app uses a specific innovative technology that can passively and smartly track the user’s grocery basket for informing them about -for example- the CO2 impact of their purchase and how aligned it is to their environmental priorities or social valuesThe solution will actively recommend alternative products of lower impact and encourage them through personalized content, gamification and community challenges to further pursue a sustainable lifestyle.We strongly believe that our daily habits can change the world. Our vision is to enable millions of consumers around the globe to learn why and how their consumption decisions impact biodiversity, climate and their own well-being. We want to accelerate the change towards sustainable production: as users consume more responsibly, they create healthy competition between companies who start to produce responsibly.We have ten years left to cut our CO2 emissions by half. From now on, every action counts. Join inoqo.
Show all investments...

Triple Impact Ventures
VC Fund · Vienna, Wien, Austria · 1 investments in Austria CleanTech startups

Backing impact-driven founders

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Investment focus

  • Industry: Software, GreenTech, Renewable Energy
  • Stage:Seed, Pre-Seed
  • Geography: Germany, France, Austria

Investor stats

  • Total investments: 6
  • Round size: Seed $4M–$5.9M; Pre-Seed $1.4M–$2.5M
  • Lead/follow: 0% lead, 100% follow

Portfolio highlights

  • Ark Climate — Ark Climate is a climate-tech company that develops software to support municipal climate protection planning and execution.
  • Recupere Metals — Recupere Metals focused on recycling copper scrap into high-quality electrical wires. It uses a patented mechanical process enhanced by AI to boost conductivity from impure scrap, bypassing energy-intensive smelting.
  • A&B Smart Materials — The A&B Smart Materials Using innovative cooling technologies to boost photovoltaic efficiency.
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Roman Scharf
Angel · Vienna, Wien, Austria · 1 investments in Austria CleanTech startups

General Partner at 3VC.

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Investment focus

  • Industry: Energy, FinTech, Medical
  • Stage:Series A, Series B, Pre-Seed
  • Geography: United States, Austria

Investor stats

  • Total investments: 6
  • Round size: Series B $20M–$26M
  • Lead/follow: 17% lead, 83% follow

Portfolio highlights

  • ZELF — Zelf is a neobank targeting Gen Z to bring financial services to where they live – in messengers. This is the lightest bank with the easiest onboarding process taking up to 60 sec to issue a card, receive and send money without leaving the messenger. We are uniquely offering AI-powered voice control over the most of financial operations, whichmakes us first voice-enabled banking for Gen Z who prefers voice interactions with their devices.
  • Kaia Health — Kaia Health is a digital therapeutics company that creates evidence-based treatments for a range of disorders including back pain and COPD. Working with experts in various medical fields, the company uses machine learning to deliver individualized app interventions that aim to empower and motivate patients to take control and self-manage theircondition with digital alternatives from their home using devices they already own (i.e. smartphones and tablets).The company has enrolled more than 400,000 users to date in its digital therapy program. It was founded in 2016 and is headquartered in Brooklyn, New York.
  • neoom — Humanity is finally saying goodbye to the energy generation from oil, gas, coal or nuclear fission, to renewable energy from wind, water, and sun. This energy transition is THE megatrend of our time! The challenges include the rapid increase in electric mobility and the increasing electricity demand for heating and cooling buildings. However, thegeneration of energy from renewable sources is characterized by certain volatility, i.e. fluctuations. We take on these challenges with our neoom battery storage and e-mobility charging solutions. With an innovative energy storage system, every private and commercial user can provide cheap, safe and above all clean energy on-site and react to the flexibility of the market. Our neoom hardware products are unique in design, functionality, and quality. Our intuitive, device-open software NTUITY represents the missing link in the field of energy management. Energy from renewable sources can be stored and used with maximum efficiency through our solutions. And best of all: we can deliver today! Take the first step into a sustainable life, visit our website, call us and now connect to neoom group.
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CleanTech Investor funding in Austria at a glance

Stats across 10 deals from 19 investors.

19
investors
in Austria CleanTech startups
10
deals
in Austria CleanTech startups
$6.3M
median round
in Austria CleanTech startups
16%
lead investors
lead at least one round
40%
Seed
most common funding stage
58/42
VC / Angel
share of investor count

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