Advancing Green Flight
With a commitment to science and innovation, we provide expert insights and solutions to help the aviation industry minimize its environmental impacts.
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Mission & Values
Evidence-Driven.
Practical.
Focus on Excellence.
Our name reflects our vision.
Just as the greenlet bird flies with minimal impact, so too should human-made aircraft. In Slovak and Czech, “let” means flight—a fitting reminder of our commitment to sustainable aviation. To achieve this vision, we work to ensure that all environmental impacts are measurable and mitigated through scalable, effective technologies with a focus on genuine results.
To catalyze the aviation industry’s transition to sustainability by providing novel research, strategic insights, and comprehensive solutions in Sustainable Aviation Fuel (SAF) and emissions reduction. We empower airlines, regulatory bodies, research institutions, aircraft and engine manufacturers, and SAF producers with the knowledge needed to optimize SAF use, reduce climate and air quality impacts, and comply with evolving environmental regulations.
Integrity
We uphold transparency and ethical standards, providing data-driven insights you can trust.Collaboration
Partnering across sectors, we unite academia, industry, and regulation to drive meaningful change.Transparent Communication
We prioritize open, empathetic communication, fostering trust and clarity in all interactions.Continuous Improvement
We are committed to ongoing learning, adapting with scientific advancements.Excellence
We set high standards in research, delivering reliable insights that reduce environmental uncertainties.
Team
Get to know us
Meet the GreenLets working toward a sustainable aviation future.

Dr. Lukas Durdina
Founder & Principal Consultant
Lukas is an aviation emissions expert and research leader. His vision for GreenLet is to bring science-based and tangible solutions for low-carbon aviation.

Dr. Lukas Durdina
Founder & Principal Consultant
My expertise spans hands-on emissions measurement and certification, aviation fuels, engine performance modeling, and environmental standards. I have led international projects, helped establish emissions standards, and collaborated with regulators and industry leaders to drive innovation in aviation sustainability
As a passionate presenter, I enjoy sharing insights with diverse audiences, making complex topics accessible and engaging.
- Email:lukas@green-let.com

Angela Kopp
Development & Administration
Angela leverages her extensive experience in air traffic control & airline ops and organizational talent to support GreenLet’s mission of driving sustainable innovation.

Angela Kopp
Development & Administration
My background equips me with the ability to think critically, stay organized, and maintain a clear overview in dynamic environments, contributing to sustainable innovation in aviation.
- Email:angela@green-let.com