
Our conviction
A sustainable future isn’t a distant aspiration; it’s a tangible reality we build together. We partner with companies and institutions, leveraging our expertise, passion, and extensive network, to drive impactful transitions towards a fair and climate-neutral society. Our team is comprised of dedicated professionals, committed to building a better future through strategic, sustainable solutions.
We understand the intricate connections between business success and environmental sustainability. We foster a culture of diversity, openness, and respect, where everyone feels valued and heard. We are committed to social fairness and ethical practices in all that we do.
Climate protection, energy efficiency, and resource stewardship are core principles, both in our consulting and our operational practices.
What sets us apart:
True Collaboration – We work alongside you, ensuring your goals become our shared mission
Accessible Expertise – We translate complex sustainability challenges into clear, actionable solutions.
Forward-Thinking Approach – We proactively seek innovative strategies to keep you ahead.
Effective Solutions – We deliver practical and creative solutions to your unique challenges.
Positive Experience – We bring energy and enthusiasm to every project, making the process enjoyable.
Powerful Team – We leverage our collective expertise to drive your success.
Our promise
Individualized, passionate, and experienced: we deliver bespoke sustainability solutions, precisely tailored to your unique needs. brainbows seamlessly integrates scientific rigor with practical application. Our interdisciplinary team and extensive network provide comprehensive, high-level guidance, ensuring impactful and sustainable outcomes.
We provide bespoke strategies, precisely aligned with your unique situation and goals.
Our deep commitment to climate protection and sustainability drives our innovative solutions and client success.
We leverage decades of interdisciplinary expertise and a extensive network in politics, business and science to deliver strategic insights and build lasting client partnerships.
Recognizing the multifaceted nature of sustainability, we act as a crucial interface between theory and practice, strategy and engagement, reporting and communication. We empower our clients by expanding their strategic and operational possibilities.


Our history
Christian and Stefan Nohel are the two managing partners of brainbows. They are supported by two female partners: Monika Langthaler and Maria Vassilakou.
brainbows was founded in 2000 by Monika Langthaler and Christian Nohel, who had previously worked together in science and politics for over 14 years.
In 1990, they joined the newly formed Green movement. Monika Langthaler was the youngest member of the Austrian parliament until 1999, while Christian Nohel was a political advisor in the Green Parliamentary Club. After ten years in politics, it was over – and the two started their next passion project: brainbows.
Monika and Christian were among the first in Austria to introduce sustainability into public consciousness and corporate boardrooms, advocating for a pragmatic and economically viable approach. Initially dismissed as a ‘niche topic,’ their foresight has been validated: sustainability and the green transformation are now central to EU economic policy.
Stefan Nohel began his career at Brainbow in 2018 as a consultant specializing in energy, climate protection, decarbonization, and strategy development. In 2024, he purchased shares and succeeded Monika Langthaler as managing director the following year. He and his uncle, Christian Nohel, have run the sustainability agency since then.
Maria Vassilakou became a partner at brainbows in March 2024. The former deputy mayor of Vienna is particularly committed to urban transformation strategies and transition management with cities, companies, and organizations.
References
Recognizing the diverse needs of our clients, we offer a broad range of services. However, our collective focus remains consistent: to achieve ambitious climate protection and decarbonization targets, secure long-term competitiveness, and strategically guide organizations through their transformative processes.
Our expertise spans diverse sectors, evolving throughout our nearly 25-year history. We serve both the public and private sector, with a current focus on infrastructure, mobility, energy, real estate, construction, food, and the cultural, sports, and media sectors.
All our projects are characterized by close client collaboration, fostering synergy and enabling the successful realization of visions in a dynamic environment.
