About Us

Ingenieurbüro Mencke & Tegtmeyer GmbH

We founded the company in 1993 and changed it into a GmbH (Ltd.) in 2008. Since the beginning we are working on the improvement and quality increase of PV systems due to our various inhouse developments of measuring equipment for solar technics. Our rugged and precise calibrated silicon irradiance sensor are used worlwide by leading manufacturer of PV monitoring systems and inverter. We complemented the sensors range with our own temperature sensor for module and ambient temperature. We also offer high precise sensor as pyranometer, wind sensor and other meteorological equipment for own data acquisiton systems or plain sensors. The power measurement at PV modules can be done with our calibrated I-V curve analyser under natural sunlight or with sun simulator. This sun simulator we offer as steady-state of flashing systems. Our multiplexing system are able to measure automatical longterm several PV modules.


  • Förderverein der Klimaschutzagentur since Februar 2003
  • Bundesverband Solarwirtschaft since Februar 2005
  • Förderverein Institut für Solarenergieforschung GmbH Hameln/Emmerthal since August 2008