Our Partner Suppliers

We closely cooperate with the leading manufacturers of solar modules and inverters.

Our, in part, long-term supply contracts offer our clients planning and supply security, especially where project business is concerned.

They supply us with solar modules

Yingli Green Energy Holding Co., Ltd.is one of the world’s largest vertically integrated photovoltaic manufacturers, covering the whole value-added chain from silicon ingots to finished modules.


BYD one of the largest solar manufacturers worldwide produces products ranging from the wafer to the module. In doing so, it attaches great importance to top-quality and sustainable products as well as to continuous further development. Due to the integration of the manufacture of electric vehicles and battery storage system technology, BYD is the world's leading provider of energy solutions, starting with energy production up to energy transmission and energy storage.

With over 12 years of experience in research and development in photovoltaics, Sunowe has created an optimal basis for manufacturing highquality, efficient solar cells and photovoltaic modules. The excellent price/performance ratio gives the company a strong standing. Sunowe is continually increasing its production capacity to reduce specific manufacturing costs and satisfy growing demand.

First Solar LLC is the fastestgrowing producer of modules in the USA. Their thin-film technology, based on cadmium telluride, presently offers the biggest potential for cost saving of all module technologies. For the ambitioned expansion plans the initial public stock provides the required financial means. With a recall and recycling guarantee for old modules, which is covered by re-insurers, First Solar has set a benchmark for the entire industry.

Solar-Fabrik AG

Solar-Fabrik AG is one of Europe‘s most experienced solar companies. The PV modules from Solar-Fabrik are synonymous with premium quality made in Germany and are characterised by their high levels of efficiency and longevity, which secure customers' investments over the long term and maximise returns.

They supply us with inverters

SMA Technologie AG: The German company is the biggest producer of inverters in Europe, with a market share of 70 per cent.

Delta Energy Systems (Germany) GmbH develops, manufactures and markets worldwide, innovative customized and standard power supplies for Renewable Energies. Delta Group has sales offices worldwide and manufacturing plants in Taiwan, China, Thailand, Mexico, India and Europe.

  Siemens AG is a global corporation with 405,000
  employees worldwide, operating in the areas of industry,
  energy and healthcare. In the area of renewable
  energies, the company manufactures, among others,
  solar inverters.

They supply us with cables

Prysmian Kabel und Systeme is the largest manufacturer of cables, wires and fittings in Germany.