22 Best Climate Tech Green Tech Startups in Tallinn to Watch in 2025

The Definitive Seedtable Ranking of Climate Tech Green Tech Startups in Tallinn

We track 71,000+ companies and rank them dynamically using our Seedtable Score – a score that uses quantitative and qualitative data points to signal the momentum behind a company. We then monitor the list manually leveraging our expertise as founders and investors.

There are 22 start-ups with an aggregate funding of $468.7m. The average funding per company in this subset is $21.3m.

Last update to the database: Feb 18, 2025. See changelog.

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6

Funding Rounds

$61.7m

Money raised

Skeleton Technologies is a Tallinn-based energy storage company developing energy storage technology and solutions.

Location:

Key people:

5

Funding Rounds

$593.3k

Money raised

Comodule is an Estonia-based company that offers scooters and bikes to companies interested in entering the micromobility field. The company manufactures the vehicles, as well as the necessary software to launch and manage a fleet of scooters or bikes.

Location:

Key people:

1

Funding Rounds

$230.0m

Money raised

Sunly is a renewable energy producer founded in 2019 by Priit Lepasepp.

Location:

Key people:

2

Funding Rounds

$6.7m

Money raised

UP Catalyst is a sustainable battery materials producer from CO2 emissions founded in 2019 by Gary Urb.

Location:

Key people:

1

Funding Rounds

$130.0k

Money raised

Membo is a Tallinn, Estonia-based marketplace company offering a place for users to purchase fresh and seasonal groceries from local producers.

Location:

Key people:

2

Funding Rounds

$50.6m

Money raised

Elcogen is a manufacturer of fuel cells and hydrogen power solutions.

Location:

Key people:

2

Funding Rounds

$1.5m

Money raised

Esgrid is an AI-powered supplier management platform for SMEs founded in 2023 by Oksana Tolmatsova, Ott Ilves, Jevgeni Bogatyrjov and Katrin Isotamm.

Location:

Key people:

1

Funding Rounds

$12.0m

Money raised

Stargate Hydrogen is a manufacturer of electrolyzer stacks and systems founded in 2021 by Marko Virkebau.

Location:

Key people:

2

Funding Rounds

$1.7m

Money raised

KWOTA - Carbon Credits Marketplace

1

Funding Rounds

$1.7m

Money raised

Arbonics is a forest-based carbon credits marketplace founded in 2022.

8

Funding Rounds

$56.4m

Money raised

Manufacturer of high energy and power density ultracapacitors.

1

Funding Rounds

$2.4m

Money raised

Automating defect analysis for power lines. Bringing 3 dimensional world to everyone, everywhere.

2

Funding Rounds

$6.0m

Money raised

Insect farming startup producing protein and fat from black soldier flies.

4

Funding Rounds

$18.0m

Money raised

Roofit.Solar is a solar roofs manufacturer founded in 2016.

Location:

1

Funding Rounds

$990.0k

Money raised

RR is a tracking and trading platform for recyclable textile waste

Location:

3

Funding Rounds

$5.8m

Money raised

RAIKU is a sustainable packaging founded in 2021.

Location:

1

Funding Rounds

$240.0k

Money raised

Provider of modular SaaS solutions for power utilities, commercials, and industries to integrate renewable energy, reduce energy imbalances, and generate revenue.

1

Funding Rounds

$980.0k

Money raised

Gridio is a smart EV charging software provider founded in 2018.

1

Funding Rounds

$2.7m

Money raised

Ecobase is a carbon financing platform for European landowners founded in 2021.

1

Funding Rounds

$2.2m

Money raised

CupLoop is a manufacturer of reusable, automatic packaging founded in 2018.

Location:

1

Funding Rounds

$4.8m

Money raised

Efenco is a cold plasma technology founded in 2015.

Location:

1

Funding Rounds

$1.6m

Money raised

Spacedrip is a wastewater treatment robots founded in 2019.

Industries:

Location:

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