OPTENDA GmbH, formerly GILDEMEISTER energy efficiency

About the company

The OPTENDA GmbH is a subsidiary of SENS - STEAG Solar Energy Solutions located in Stuttgart.

The experts for energy consumption and optimisation start their work where energy is consumed. It doesn´t matter if its engineering or retail, if it is a large company or one of the medium-sized sector: The aim is to provide individual solutions to improve their energy efficiency. The portfolio includes classical energie monitoring based on a software, energy storage solutions as well as integrated energy concepts. The certified experts accompany the customers towards their individual energy future. They support at each step of the process, from project preparation to the capturing of the status quo to the implementation of efficiency measures and help thereby to make the processes transparent and save cash effectively.




  • Energy storage solutions
  • Energy data monitoring with the own software "Energy Monitor"
  • Individual measuring and data integration concepts
  • Energy concepts for the industry
  • Energy management according to DIN ISO EN 50001
  • Energy audits according to DIN ISO EN 16247
  • Support in purchasing and invoice controlling
  • Energy consulting for middle-sized companies



Phone: +49 (0) 711 9746 1900

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STEAG Solar Energy Solutions GmbH – Dortmund office

About the company

STEAG Solar Energy Solutions GmbH rented an office in a coworking centre in Dortmund.

With the first branch in the Ruhr region, customers from the north of Germany can be advised more comprehensively and faster. This gives the Energy Systems business unit another German location.

Dortmund STEAG Solar Energy Solutions

Ihr Kontakt zu STEAG Solar Energy Solutions – Büro Dortmund

STEAG Solar Energy Solutions GmbH

Phone: +49 (0) 151 42267180

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