"Our installation business operates across Germany - with a strong focus on PV, battery, and charging infrastructure. For residential and commercial properties."

Single-family houses

Our selected partners
Solar panel at the top of the house
Zeuthen - 12 kWp
Ariel view of the house
Münster - 24 kWp
Roof top house
Wefensleben - 10,68 kWp

Multi-family houses

Our selected partners
sunset at the roof top full of solar panels
Hildesheim - 63 kWp
lines of solar panels
Cottbus - 99 kWp
building under construction
Lindow - 49 kWp

Commercial & Public

Our selected partners
solar panels
Bark - 144 kWp
circular design roof top with solar panels
Duisburg - 228 kWp
ariel view of solar panel
Bremen - 199 kWp

smalt since 2023

400+ projects completed
>5 MWp installed
30+ skilled professionals trained
Developed proprietary installation software
a group of people sitting for a photos

Additional Services

Charging Infrastructure
Battery Storage
Smart Meter Replacement
Split Air Conditioning Units

Das Team

Sara Thierfelder

Sara Thierfelder

Managing Director smalt installations

Sara Thierfelder

Managing Director smalt installations

Sara is a master electrician in the trade and industry with a wealth of experience, having connected over 70 MW of PV systems to the grid over the past 10 years. Before joining smalt, Sara had already been working in the renewable energy business for years, serving both commercial and private customers.

Fabian Krapp

Fabian Krapp

Geschäftsführer smalt installations & Director Operations

Fabian Krapp

Geschäftsführer smalt installations & Director Operations

Fabian is Managing Director and Director of Operations at smalt Installations. In this role, he oversees all installation services and creates scalable digital processes. Before joining smalt, Fabian worked in the climate sector at Zolar, where he managed installation teams and partner management. He began his career at Instafreight and Foodora.

Constantin Weiss

Constantin Weiss

Managing Director smalt installations & Director Partnerships

Constantin Weiss

Managing Director smalt installations & Director Partnerships

Constantin heads up partnerships at smalt. Before that, he started Fixkraft, a social startup that connects immigrants and refugees with jobs in Germany. He also has a ton of political experience and worked as a senior staffer in the German Bundestag. He grew up in Germany, London, and Boston, and has an M.Sc. from ESADE.

Florian Graf

Florian Graf

Technical Project Manager

Florian Graf

Technical Project Manager

Flo has many years of experience in energy and building technology, as well as over 5 years in the PV and renewable energy sector. Under his leadership, over 15,000 PV and storage projects have been completed. He has managed over 50 electricians and worked for many years in leading positions as a construction manager.

Armin Meier

Armin Meier

Senior Team Lead

Armin Meier

Senior Team Lead

Armin is one of our most experienced DC-Team-Leads. A certified roofer by training, Armin brings decades of experience in building complex roofs and PV-systems.

Erik Schultz

Erik Schultz

Senior Team Lead

Erik Schultz

Senior Team Lead

Erik has been with smalt for 2 years. As an experienced roofer, Erik has managed both residential as well as commercial projects with excellence.

Tobias Sachs

Tobias Sachs

Technical Meister

Tobias Sachs

Technical Meister

Tobias is one of our master electricians and technical managers at smalt. Born and raised near Berlin, he is passionate about training the next generation of climate heroes. Before joining smalt, Tobias was a trainer for PLC programming and technical operations manager at a home installation company.

Mohamed Abou Alfa

Mohamed Abou Alfa

Technical Planning Lead

Mohamed Abou Alfa

Technical Planning Lead

Mohamad is Head of Technical Planning with a degree in mechanical engineering and PMI-CAPM certification. With over three years of experience in the solar industry, he started at Smalt as a Solar Operations Specialist, then became Team Lead, and now heads up technical planning and procurement for residential and commercial projects. His combination of practical experience and structured project management ensures efficient, high-quality solar system installations.

Sukhi Singh

Sukhi Singh

Team Lead

Sukhi Singh

Team Lead

Sukhi has been with smalt for 3 years. He started his career as a trainee in our academy - with exceptional talent, diligence and hard work, he has grown to a team-lead.

Arne Zitzke

Arne Zitzke

Grid Manager

Arne Zitzke

Grid Manager

Arne is responsible for all things grid-connections and communications. He makes sure that all applications to local grid operators are filed on time and assures that all regulatory filings are in place.

Empowering the future of PV installersto address the blue collar shortage

We provide comprehensive training programs to transform unskilled individuals into professional installers. Join us to start your journey in the PV industry

“I joined smalt with a vision - wanting to grow as a person and expand my knowledge in the climate sector. While completing my training in PV installation and gaining that practical installation experience, I felt more and more confident about my skill set and I am beyond proud that I was recently promoted to Junior DC Team Lead in such quick time. Working at smalt is demanding and encouraging which I love.”

Mohamad Abou Alfa