Top 10 Green Startups You Need to Know in 2025


A manifesto in ten acts. Not just a list — a glimpse into the world that could be.
Top 10 Green Startups You Need to Know in 2025


1. Made of Air (Germany)

They transform agricultural waste into carbon-negative thermoplastics, turning buildings into carbon sinks. Their materials store CO₂, making architecture a climate solution.

2. Notpla (UK)

Using seaweed, Notpla creates biodegradable packaging that disappears naturally. From edible water pods to takeaway boxes, they offer a plastic-free alternative that leaves no trace.

3. Spiber (Japan)

Spiber produces Brewed Protein™, a plant-based, biodegradable fiber inspired by spider silk. Their materials offer a sustainable alternative to animal-derived and synthetic fibers.

4. Voltpost (USA)

Voltpost retrofits existing lampposts into modular EV charging stations, democratizing access to electric vehicle infrastructure without the need for new construction.

5. Simbiose Agro (Brazil)

Simbiose develops biological fertilizers and inoculants using microorganisms, enhancing soil fertility naturally and reducing the need for chemical inputs in agriculture.

6. BettaF!sh (Germany)

BettaF!sh offers TU-NAH, a 100% plant-based tuna alternative made from European seaweed and plant proteins, providing a sustainable option that protects marine life.

7. Cemvision (Sweden)

Cemvision reinvents cement by replacing traditional materials with industrial by-products, achieving a significant reduction in CO₂ emissions while maintaining performance.

8. Plan A (Germany)

Plan A provides a certified carbon accounting platform, enabling companies to measure, report, and reduce their emissions effectively, aligning with global sustainability goals.

9. Reel Paper (USA)

Reel produces bamboo toilet paper and recycled paper towels, offering a plastic-free, biodegradable alternative that supports reforestation and reduces environmental impact.

10. Carbonauten (Germany)

Carbonauten creates NET Materials® by converting biomass into biocarbons and bio-oils, offering CO₂-negative materials for industrial applications and contributing to carbon sequestration.

These startups are not just businesses; they are blueprints for a sustainable future.
What would you do if you were already living in the world of tomorrow?