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5 new green ideas grew from Climathon Tallinn 2022

Updated: Nov 9, 2022

Climathon Tallinn 2022.

Climathon Tallinn, a 24-hour climate hackathon, took place on the 28th-29th of October at TalTech Mektory. The hackathon brought together 27 participants who worked in teams to find solutions to our climate and sustainability problems.

The participants had the opportunity to attend three workshops (Design Thinking and Pitching training led by Kaisa Hansen and Stakeholder Engagement by Katerina Chantzi), work with mentors from the cleantech ecosystem and receive instant and valuable feedback to develop their ideas.

5 ideas were presented to the jury for the final pitching:

  • Beety Inc. – enhancing city biodiversity through urban beekeeping.

  • C&C – eco-tourism community development in Southern Italy.

  • Cool Arctic – filter system for ships emissions.

  • EASY5 – a 5-minute self-assessment tool for calculating the environmental impact of startups.

  • Plastic Shell – recycled plastic products for construction and logistics.

The top 3 teams (Beety Inc., Cool Arctic, and Plastic Shell) won up to 1000€ and 3 months of mentoring from Cleantech Estonia to develop their ideas further.

The top 3 teams.

In addition, 6 special prizes were given out:

  • Access to Prototron autumn programme – Cool Arctic

  • Access to the pre-accelerator programme of Beamline Accelerator – Beety Inc.

  • 6 months of free co-working space from Mektory – Cool Arctic

  • 1h meeting with an EstBAN angel – Plastic Shell

  • Tickets to sTARTUp Day – Beety Inc.

  • Dinner at Lee Restaurant – EASY5

Climathon 2022 live interview with Katerina Chantzi, Project Manager of Climathon Tallinn.

The jury consisted of Kaisa Hansen (Head of TalTech Startup Center), Toomas Toodu (Green Cluster Community Manager at Pärnu County Development Center), and Indrek Kelder (CFO at Cleantech Estonia).

The teams were mentored by Kadri Piho (Cleantech Estonia), Indrek Kelder (Cleantech Estonia), Kaisa Hansen (TalTech Startup Center), Sander Õun (Suckõrs), Johanna-Maria Siilak (KWOTA), and Yelena Zhovnikova.

Climathon is a global 24-hour climate hackathon that organizes locally. It raises awareness, building or strengthening ecosystems together with participants, to understand what drives climate change locally. This year, Climathon took place in 160 cities around the world.

Climathon Tallinn was organized by Cleantech Estonia and TalTech Mektory.


Cleantech Estonia is an Estonian non-profit that started its activity in the year 2016 dealing with financing startups that develop green/clean technologies and promote environmental education and sustainability topics. Cleantech Estonia has hosted major startup and accelerator programmes such as Beamline Beta, ClimateLaunchpad, Climate-KIC Accelerator, Climathon, and more. To learn about the possibilities of different green technology developments, contact the CEO of Cleantech Estonia Erki Ani by email at

#cleantech #climathon #hackathon

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