Roland Wigger

Portigon AG engages in the management of its own assets. It also provides financial services and conducts banking activities. The company was founded in 1969 and is headquartered in Duesseldorf, Germany.

abakus solar AG constructs and installs photovoltaics (PV) power plants. It offers monitoring, reporting, fault clearance, maintenance services. The firm also provides hardware adjustment, plant performance tests, takeover in control rooms, inspection and plant checks, head line measurements, electroluminescence, thermography recordings, module cleaning, and performance tests for PV modules. The company was founded in 1995 and is headquartered in Gelsenkirchen, Germany.