Solar-Log monitor pv systems

Solar-Log is a data logger device used to monitor pv systems of various sizes. Jörg Karwath developed the first version in 2004. In 2007 he founded the start-up «Solare Datensysteme GmbH» (SDS) together with Thomas Preuhs. Since then, the company has been on an expansion course and offers its products in 20 countries since 2011. In 2015 the Swiss company BKW AG took over Solar-Log, which has since been managed as a subsidiary of BKW.

Read more about the SOLAR-LOG photovoltaik monitoring system

The product range of Solar-Log includes:

  • Solar-Log hardware
  • Smart Relays
  • Counters
  • Sensors
  • Communication products
  • Installation accessories
  • Solar-Log Gateway
  • Solar-Log web solutions
  • Solar-Log Web App
  • Alexa connection to Solar-Log
  • Online trainings

SDS and BKW an energetic future


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Some interesting reference projects

  • In 2011 the viticulture business of the Pfitscher family in South Tyrol, Austria, installed a photovoltaic plant with an output of 17.15 kWp, which is monitored by Solar-Log 1200 and Solar-Log Web Enerest.
  • The Thaba Tholo game farm in South Africa is not only home to the «Big five» but also to a 750 kW solar field, which as an off-grid system provides the farm with electricity. This large PV plant is monitored by Solar-Log 2000.
  • One of the largest PV roof systems in Switzerland is also monitored by Solar-Log. There are 29,737 solar modules on the distribution center of Migros Neuendorf, which produce an annual output of 7.23 GWh of electricity. The plant was constructed between 2013 and 2016. It consists of seven subplants, each of which is controlled by a Solar-Log 2000 and monitored by Solar-Log Web Enerest.