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COMPANY

Planeteers was founded in Hamburg with a simple idea – to bring science and engineering together for measurable climate impact.

Founded in

2022

Nationalities

12

Projects

5

Mission
Guided by our purpose to turn the tide for a livable future, we develop science-based technologies that remove CO₂ where it matters most: directly at emission sources and within the ocean’s natural systems. We keep the emphasis on what can be measured and verified – pairing careful engineering with transparent monitoring.

Vision
What started as an experiment has grown into a mission-driven company building scalable, verifiable solutions for permanent carbon removal. We aim to advance a livable future for all – by turning rigorous science into reliable operations – project by project, site by site.

The Team

Alexander Leuschner

Projects

Camila Hernandez

People & Culture

Chris Barrera

Operations

Dr. Ben Wanxuan Yao

R&D

Dr. Frank Rattey

Founder & Managing Director

Dr. Isabell Bagemihl

R&D

Dr. Matthias Kellermann

Projects

Dr. Michael Rieger

Engineering

Dr. Thorben Amann

R&D

Florian Birner

Founder & Managing Director

Helge Offermann

R&D

Ina Nipper

R&D

Janis Flach

Engineering

Julieta Schneider

R&D

Kala Jackway

Sales & Marketing

Kelvin Weru

Operations

Lucas Puttfarcken

Operations

Manan Shah

Engineering

Martin Keim

Projects

Natasha Perrott

Engineering

Pia Schlemmer

Stakeholder Engagement

Prof. Jens Hartmann

Founder & Chief Scientist

Rachele Penven

Finance

Sylvie Stößer

People & Culture

Tatum Herrero

R&D

„Planeteers’ solution closes a technological gap for capturing and storing CO2. As a municipal wastewater operator, it opens new revenue streams from negative emissions for our existing infrastructure, while simultaneously preparing us for future decarbonization regulation.“

Julia W. (Planning & Construction Lead, Wastewater Treatment)

„Planeteers’ approach stands out for its ability to integrate carbon capture and storage into existing industrial water streams, unlocking a cost-efficient and scalable pathway for durable CO2 removal. This type of infrastructure-enabled deployment model is critical for bringing high-quality carbon removal to gigaton scale.“

Frauke K. (Head of Science, Frontier)

„Planeteers’ end-to-end approach to decarbonization closes a technological gap for industrial plants. Especially for us as a lime producer, it opens up new opportunities to integrate this CCS solution into our existing facility, permanently remove CO2 economically, and even put our own waste materials from lime production to use.“

Arnt S. (Managing Director, Lime Producer)

2023 – First days in our Garage

2023 – ILA2023 Malaysia Flo Birner on stage

2023 – Hamburg Investors Network Pitch Award

2024 – Frank on stage May Ocean Deep Tech Day Kiel

2024 – May signing SEED ROUND

2024 – October International Lime Association Conference Oslo Frank on stage

2024 – Pilot at AZV Südholstein in Hetlingen

2024 – Pilot in Kiel

2024 – Pilot in Wuppertal

2024 – Pilot in Hamburg

2024 – Pilot Upgrade

2024 – September WINNER Gründerpreis (mit Bürgermeister Tschentscher)

2025 – December Deutscher Nachhaltigkeitspreis ALL WINNERS Frank on stage

2025 – December Deutscher Nachhaltigkeitspreis WINNER Frank on stage

2025 – May Hamburg Sustainability Conference

2025 – October Isometric validation Site Visit HETLINGEN

2025 – Team Retreat at Wir bauen Zukunft in Gallin

2025 – Team Retreat at Wir bauen Zukunft in Gallin

2025 – NEP (Negative Emissions Platform) Event Brussels Frank on Stage

2026 – Grand opening of our plant in Hetlingen

Award-winning impact

Our work has been recognized with two of Germany’s most respected awards for entrepreneurship and sustainability:

The Hamburg Founder Award 2024 (Hamburger Gründerpreis 2024) and the German Sustainability Award 2025 (Deutscher Nachhaltigkeitspreis 2025).

These honours validate our mission to drive rigorous science into scalable, measurable CO₂ removal – with integrity, transparency, and real-world implementation at the core.

In addition, we have also been recognized by the European Innovation Council for our disruptive, breakthrough technology.

Partner with Planeteers to make carbon removal part of your operations. Our technology integrates with existing industrial and municipal systems, enabling measurable, permanent climate impact.

Milestones

2022 – Foundation

Planeteers founded in Hamburg, uniting engineering, business, and geoscience expertise.

2023 – Validation & Prototype

Technology validated under lab conditions and replicated in a Hamburg garage as the first full-scale prototype.

2024 – Field Pilot & Recognition

Pilot reactors tested at wastewater treatment sites, Planeteers wins the Hamburg Startup Award, and completes its Seed Round.

2025 – First Certified Ton

First certified ton of CO₂ removed under Isometric standards. German Sustainability Award winner.

2026 – Industrial Scale

Deployment of the 1,000-ton unit, marking the transition from pilot to industrial scale.

2027 / 2028 – Scale-Up

Commissioning of the 2,500-ton and 10,000-ton units, expanding operational capacity and regional coverage.

2030s – Megaton Era

Advancing toward megaton-scale carbon removal through global replication and strategic partnerships.

Our Partners