Name: Catherine Adelmann
Company Name: Fosera
Designation: Founder and CEO

Introducing Catherine Adelmann, the visionary Founder and CEO of Fosera, a pioneering off-grid solar company that has been revolutionizing the renewable energy landscape since its inception in 2011. Catherine’s entrepreneurial journey is intricately woven with a deep-seated passion for sustainable energy solutions, instilled in her by her father, a professor of off-grid solar energy. Fosera, under Catherine’s leadership, has evolved into a global force, with a team of over 100 professionals and a significant impact on more than 3 million lives worldwide. Catherine’s commitment to providing reliable, affordable, and clean access to energy has fueled Fosera’s growth, from its humble beginnings to a company with a manufacturing plant in Thailand and a local assembly line in Ethiopia. Join us as we delve into Catherine Adelmann’s inspiring journey, exploring the milestones, challenges, and transformative vision she brings to the renewable energy sector.

Could you share your personal journey in becoming an entrepreneur and what inspired you to pursue your current business?

Since my father is a professor of off-grid solar energy, it was always clear to me that not everyone had an electric socket at home and that energy needs to be generated somewhere. Back in 2011, when I started Fosera, I was still studying at university. The prices for solar panels had dropped significantly, LEDs became an affordable mass product and there was a lot of movement in battery research which made it possible to build a high-quality, long-lasting but still affordable solar home system.

How has your background and life experiences influenced the mission and values of your company, and the impact you aim to make in the world?

During my studies, I also had courses in Marketing. I found it very frustrating that a lot of tools taught there are aiming to sell people things they actually don’t need. With Fosera, we’re delivering high-quality solar home systems to people without access to energy and helping them transform their lives.

What are some of the achievements or milestones in your business journey so far? Can you share an example of a project or initiative that you’re most proud of?

We have grown from a tiny little (and very unprofessional) student start-up to a company with over 100 employees worldwide. Apart from our headquarters in Ulm, we have established our own factory in Thailand and an assembly line in Ethiopia. We have helped more than 3 million people get access to clean, affordable, and renewable energy.

Can you describe the challenges you faced during your entrepreneurial journey? Did you encounter any specific gender-specific challenges? How did you overcome them?

Starting a company always means overcoming challenges. Luckily, you’re never alone, and together with your colleagues, investors, or business partners, you find a solution and way forward.

What are some of the most important lessons you’ve learned as an entrepreneur that you would like to pass on to others considering a similar path?

It will be tough. There will be mistakes made. But don’t be afraid of making mistakes as it will help you grow.

Looking ahead, what are your aspirations and goals for the future and how do you plan to continue making a difference through your work?

With our amazing team at Fosera, we will continue to build solar home systems to achieve reliable, affordable, and clean access to energy.


Catherine Adelmann’s story is a testament to the transformative power of vision, dedication, and sustainable entrepreneurship. Through Fosera, she has not only illuminated homes but has also brightened the lives of over 3 million individuals globally. Her commitment to delivering reliable, affordable, and clean energy has propelled Fosera from a small student start-up to a renowned off-grid solar company. Catherine’s journey exemplifies resilience in the face of challenges, demonstrating that mistakes are steppingstones to growth. As Fosera continues to make strides in providing sustainable energy solutions, Catherine Adelmann remains an inspiring figure, steering the company toward a future where energy access knows no bounds. Her success is not just a personal achievement but a beacon guiding the way for others in the renewable energy landscape. The story of Fosera and Catherine Adelmann continues to unfold, promising a brighter, cleaner, and more sustainable future for communities worldwide.

About Fosera

Fosera, founded in 2011 by entrepreneur Catherine Adelmann, stands as a trailblazer in the off-grid solar industry, headquartered in Ulm, Germany. The company’s commitment to delivering sustainable solar home systems is exemplified through its German engineering team, ensuring reliability and longevity in every product. Operating its own manufacturing facility in Pathumthani, Thailand, with certifications for quality, environmental responsibility, and health and safety, Fosera emphasizes global accessibility. The local assembly line in Bahir Dar, Ethiopia, further extends their impact. Fosera’s flexibility shines through customized solutions, including co-branding and tailored configurations. As a pure manufacturer, Fosera actively supports local distributors, offering project support and competitive products. Under Catherine Adelmann’s leadership, Fosera continues to illuminate homes and empower communities, contributing to a future where clean and affordable energy transcends geographical and economic boundaries.