About the solar company Sonnenexpert
Sustainable photovoltaic systems for solar power
Sonnenexpert GmbH has been successfully operating in the renewable energy market for many years. Sonnenexpert focuses on solar technology , particularly photovoltaic systems . With high-quality systems for generating solar power, including for self-consumption, we at Sonnenexpert have grown into a renowned provider of sales and installation services. Photovoltaic systems are suitable for equipping individual rooftops as well as for the development of large solar parks . We offer attractive investment opportunities with returns, including the leasing of open land for solar energy investments.
This is where ideas are born: Our unique company headquarters
Since summer 2025, the new headquarters of the Sonnenexpert Group has been shining in Roggentin near Rostock.
It is a state-of-the-art center that unites innovation, creativity, and the power to implement ideas. Here, ideas are born that shape the future – and further construction is underway at the company's headquarters to create space for even more progress and inspiration.
The Sonnenexpert Group stands for comprehensive energy solutions from a single source. Under our umbrella, specialized companies unite, all pursuing a common goal: actively shaping the path to a sustainable, energy-independent future. Our strength lies in the combination of technical expertise, economic foresight, and practical service – from planning to operation.
Planning, installation and technical implementation – all from one source
Sonnenexpert Technik stands for precise engineering, modern energy technology and future-oriented solutions that are perfectly tailored to the needs of our customers.
Your partner for maintenance, monitoring and plant support
Sonnenexpert Service ensures that photovoltaic and energy systems operate reliably, efficiently and at peak performance in the long term – with a strong focus on quality and customer satisfaction.
Investing sustainably in solar energy – for people and the environment
Sonnenexpert Invest develops and finances renewable energy projects. Our goal: to invest in an ecologically responsible manner while simultaneously achieving economic success.
fri Energy - Your energy. Your future.
At fri Energy, everything revolves around a clean and efficient energy supply for your home. As part of the Sonnenexpert Group, we offer solar enthusiasts innovative solutions for photovoltaic systems, energy storage, and wallboxes – for greater independence, lower energy costs, and an active contribution to the energy transition.
Our mission is clear: We want to support people in generating, storing, and using their own energy effectively. We combine state-of-the-art solar technology with personalized advice and tailored solutions that perfectly match your needs.
fri Energy – because sustainable energy starts at your home.
Together we are shaping the energy of tomorrow – regionally rooted, innovative and with a full passion for sustainability.
Full Service
Everything related to solar power systems – from planning to final installation. Including maintenance and operation.
top offers
A wide range of solar energy products – from single-family homes to large-scale projects. We are the solar company with a broad selection.
State-of-the-art solar technology
Our solar company offers solar technology at fair prices – from renowned manufacturers and exclusive partners.
Large energy storage facilities
We have the energy of tomorrow – with large energy storage facilities, we can create cost-effective energy reserves for everyone.
Everything from a single source at our solar company
Since our founding in 2012, we have been committed to harnessing the power of the sun as a certified solar company. Our team of engineers, roofers, and electricians installs solar systems on roofs and open spaces throughout Germany and beyond, from planning to installation, all from a single source. See for yourself what we offer.
- Complete service from planning to finished assembly
- Large variety of products
- Networked complete solutions
- Off-grid solar storage solutions
- Investment properties with returns
We are a #Team - More than just collaboration
For us, a team isn't just a group of people working together – it's a space filled with trust, energy, and mutual strength. In a team , we take responsibility for one another, celebrate successes together, and support each other when we stumble. Every individual is important, every contribution counts, and together we achieve things that would be impossible alone. A team is a feeling of unity, inspiration, and collaboration – like sunbeams that shine warmly individually, but together are unstoppable.
The Sonnenexpert team
Our team of experienced solar experts is committed to our goal with high professionalism and reliability: satisfied customers and clean energy, so that solar energy is worthwhile for you!
What will move us forward together
At Sonnenexpert, we are more than a team – we are a community built on trust, respect, and enthusiasm. Our daily actions are guided by values that unite us and illuminate our path.
For us, friendliness is not an obligation, but an attitude. It creates warmth, opens hearts, and brings us closer together as people and colleagues.
Time is a form of appreciation. Those who are punctual show respect for others and responsibility for the common good.
Reliability is the foundation of our success. When we make a promise, we stand by it – our word is our bond.
Growth happens outside the comfort zone. We explore new paths, experiment, and learn from every experience.
An honest smile costs nothing – and achieves so much. It brightens encounters and makes workdays easier.
Praise and appreciation are part of our culture. We see the good, acknowledge it, and genuinely rejoice in the successes of others.
Together we are strong. Wherever someone needs support, we are there – helpful, attentive and with an open ear.
Mistakes are part of learning. Admitting them demonstrates strength and responsibility – and enables mutual growth.
Honesty builds trust. We communicate openly, respectfully, and authentically – with heart and mind.
We think before we act. With mindfulness, experience, and foresight, we make decisions that last.
Become a sun expert now!
Come to the sunny side of life and become part of our team of experts. We want to make sustainable energy usable for everyone and thus protect resources. Drive this further development forward with us!
We are sports enthusiasts
The Sonnenexpert Group stands not only for energy, sustainability and innovation, but also for team spirit and passion – values that we know and live from sports.
We are convinced that success comes from cohesion, fairness and commitment – whether on the playing field or in everyday work.
That is why we are enthusiastically involved in regional sports and support traditional clubs such as FC Hansa Rostock in the 3rd division of football , SSC Palmberg Schwerin in the 1st women's volleyball Bundesliga and the Rostock Seawolves in the easyCredit men's basketball Bundesliga.
These commitments are more than just sponsorship for us – they are a declaration of our love for our homeland and for an active, positive lifestyle.
Physical activity also plays a major role within our team. At our company events, such as the Rostock company run , our employees regularly participate together to master athletic challenges, have fun, and strengthen team spirit.
Whether in the office, on the construction site, or on the running track – we always give our best. Because only together can we achieve great things.
Our premium partners
Our solar company works with experienced premium manufacturers, allowing us to guarantee the highest quality of our products and services.
364273289 kWh
electricity generated per year
2549913.023 sq m
built solar panels
23
Employees
10
Years of Experience
364273.289 kWp
plant size