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What is Green Hack?

GreenHack 2025 is the fourth year of international sustainability hackathon tackling environmentally responsible development and future greatest challenges. We are not afraid of the big issues. Climate change, overconsumption, irresponsible production and poor resource management. Let’s take them on.

We are certain that technology, together with our willingness to behave differently, is key to solving 21st century issues. Will you give it a try?

100+ masters of innovation, cutting edge technologies and new materials, product and service design as well as other young experts will compete for great prizes with their solutions for the specific challenges of our partners.

The battle will last two days, non-stop. Dare to join in?

PRIZE MONEY: 4 000 €

Main prize: 2 500 €
2nd Prize: 1 000 €
3rd Prize: 500 €

Tracks 2025 Upcoming

1. Blackout Resilience: Survive the City Without Power

What happens when the lights go out? Design bold, green solutions that help urban communities stay safe, connected, and sustainable during a city-wide blackout.

Challenge partner: Škoda Auto

2. Green Mobility & Transportation

Innovate the systems that move people and goods – sustainably.

Challenge partner: Mycroft Mind

3. Circular Economy

Design out waste and build systems that keep resources in the loop.

Challenge partner: CEPS

4.  Sustainable AI

Design AI that scales responsibly – and sustainably.

Challenge partner: TESCO

5. Sustainable Energy

Reimagine how we power the planet — cleaner, smarter, and more resilient.

Challenge partner: Škoda Auto

5. Sustainable Workplace

We want to challenge you to imagine a more sustainable workplace with us; from the design of the office, the structure of the floorplan, and the materials used to how our offices are run, we believe there is a better, greener way.

You will be welcome to visit our Prague office nearby to see the way it is designed and run, with one of its architects as a mentor; the goal is to figure out bold new ideas on how to build and run a workplace better, so we can apply them not only in our Prague office but also in our offices across Europe.

Challenge partner: Edwards Lifesciences

6. Slash the Food Waste

Revolutionize food consumption practices by developing innovative solutions to tackle food waste in households and hospitality establishments. Utilize your creativity and technical skills to optimize food usage, minimize waste, and create sustainable food management strategies. 

Challenge partner: Potravinové banky

Timeline

Agenda

Friday– 30 May 2025
Hack Day #1

08:30–09:30 – Registration 
09:30–09:40 – Welcome & Keynotes
09:40–10:00 – Organization & Rules
10:00–11:30 – Challenge presentations
11:30–12:00 – Mentor introduction

Saturday – 31 May 2025
Hack Day #2
 
09:00–10:00 – Workshop: How to pitch?
11:30 – Submissions deadline
13:00–17:00 – Pitch session 
17:30 – 18:30 – Winners annoucement

Venues
NEWTON University (Hacking)

Auspices

Industry Partners

Academic partners

Venue partner

Network partners 2024

Organized by

GreenHack 2024

Gallery

Have a look at the hacks that came from previous GreenHacks

Do you want to become a partner of GreenHack?
Drop us a line!