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The Cleantech Directory

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A.O. Smith

The most important step that we took to contribute to a sustainable environment is the development of our renewables. These are system solutions that employ sustainable forms of energy in combination with condensing high efficiency technology. Our renewables perform with considerably higher (system) efficiency than comparable installations in the market. Even in terms of comfort, our renewables are uncompromising. As a total supplier, A.O. Smith provides all the necessary components for each custom-built solution.

a2-solar Advanced and Automotive Solar Systems

a2-solar draws back on more than 30 years of proven knowhow and technological expertise for innovative solar solutions in the field of building-integrated (BiPV) and "automotive" solar systems. Our team incubates trend-setting module technologies for all kindsof solar applications.

Aerata Aerial Assessment Solutions

Implementing drone assessment technology in renewable energy solutions such as solar farms, wind turbines, and dams has made it more affordable and more profitable for companies to manage these assets.



We are a drone service provider where we focus on inspections with a focus on thermographic data provision.

AKKU Gesellschaft Taubenheim

We are your experts for planning, development, production, assembly and sale of photovoltaic solar systems, batteries and chargers for special applications, security and emergency lighting, battery and chargers for railway, power sources for communication systems, batteries, chargers and accessories for drive units !


Trust in our over 20 years of expertise in the solar sector. As a competent partner, we provide you with absorbent and highly reflective surfaces for solar energy generation. Our core competence and the creation of highly efficient, specially developed reflective surfaces (as well as absorbing surfaces with low emissions) coupled with strong performance: creates the ideal conditions for effective use in energy generation. We are the only manufacturer worldwide that can offer a wide range of products from a single source. We produce selectively absorbing and highly reflective coating systems in the coil-to-coil process, in our own vacuum coating systems (PVD) and special coating systems (developed for sol-gel processes), which are then used in flat and air collectors.

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