Climatetech · Finland
Climatetech startups in Finland
Early-stage climatetech companies headquartered in Finland, founded in the last 5 years. Drawn from public sources.
How we choose these companies
A public directory of early-stage European climatetech startups. We aim to list every company that fits, not a hand-picked few. Here is exactly what that means, and why:
- European: headquartered in Europe (EU, EEA, UK, Switzerland and nearby). We go by where a company is based, not just where it sells, because this is a map of the European ecosystem.
- Early-stage: founded in the last 5 years. That is where the new ideas and the most active part of the ecosystem are; established household-name scaleups are a different list.
- A real product company: builds a scalable technology product or platform. We leave out agencies, consultancies and local service businesses, which do not follow the same path.
- Independent: a standalone company, not a subsidiary or brand of a larger corporation.
- Active: currently operating, with a live website. We re-check regularly and remove companies that shut down, get acquired, or move out of scope.
We list only public information about what each company does. We deliberately do not track or show fundraising: who is raising, who is investing, or how much. This is a directory of companies, not a deal database.
Missing a company, or see something off? Suggest an addition or report an issue.
8 early-stage climatetech startups in Finland
A comprehensive list from public sources, not a hand-picked few.
Cactos
Helsinki, FinlandBuilds smart battery energy storage systems utilizing repurposed electric vehicle batteries to optimize energy consumption and stabilize the grid.
Carbonaide
Joensuu, FinlandDevelops CO2 mineralization technology that permanently sinks carbon dioxide into precast concrete during curing to produce carbon-negative building materials.
CarbonLink
Helsinki, FinlandAutomates corporate carbon footprint tracking and reporting by translating financial administration data into real-time emission insights.
Liquid Sun
Tampere, FinlandLow-temperature electrolysis technology that converts captured CO2 and hydrogen into synthetic aviation fuel using renewable electricity.
Steady Energy
Espoo, FinlandDevelops low-temperature and low-pressure small modular nuclear reactors specifically engineered to decarbonize municipal district heating.
Synergi
Helsinki, FinlandProvides a smart software platform that connects and optimizes home energy assets, helping households save on bills and support grid flexibility.
TheStorage
Tampere, FinlandDevelops sand-based high-temperature thermal energy storage systems to decarbonize industrial heat processes.
Woamy
Espoo, FinlandProduces recyclable, biodegradable, wood-based cellulose foam to replace expanded polystyrene and other plastic foams in packaging.
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