Success Story: City of Bremen, Germany

City of Bremen Cuts Energy Consumption and Consolidates Building Management with Wonderware Solution

Bremen, Germany – When the City of Bremen needed to modernize the heating systems in several of its buildings, it analyzed the project and realized an opportunity to do more. Besides improving energy efficiency, there was the potential to implement a new building management system (BMS) that would bring greater control and provide far-reaching positive effects across the city’s extensive portfolio of properties.

Developing a Centralized Concept

With more than 1,200 municipal facilities covering over 1.8 million square meters (nearly 20 million quare feet) of floor space, the undertaking was not a small one. At the time, six control stations across the city were running a variety of proprietary building control systems. Reporting and sharing information in a consistent format was a challenge for the five egional supervisors. And employees had to learn to operate each of the different systems. Plus, adding new buildings was complicated and costly.

“Immobilien Bremen, Anstalt des öffentlichen Rechts,” the city’s property service company, evaluated a number of software possibilities as well as a formal engineering study that analyzed the City of Bremen’s current technologies and its roadmap for the future. Immobilien Bremen determined that the Wonderware solution would meet the city’s requirements for an open, vendor-agnostic BMS that would consolidate the various existing systems under a single operator interface. Immobilien Bremen determined that the Wonderware solution would meet the city’s requirements for an open, vendor-agnostic BMS that would consolidate the various existing systems under a single operator interface.


  • Unify more than 1,200 municipal properties under a single, open building management system (BMS)
  • Optimize the efficiency of heating systems in the buildings to cut energy consumption


  • The buildings were running proprietary BMS from several different vendors
  • The properties were managed at six control facilities located around the city under the direction of five geographical districts and regional supervisors

Solutions and Products

  • Wonderware InTouch® HMI for Terminal Services
  • Wonderware ActiveFactory™
  • Wonderware Historian
  • Wonderware Customer FIRST Support


  • An open BMS based on the Wonderware solution is in place, centralizing the management of the extensive property list (160 facilities in all)
  • Regional supervisors all now have access to the BMS
  • Energy consumption is down by 15% to 18%
  • Assumed cost saving of more than € 30,000  (US$ 43,000) per year
  • Adding buildings to the system is simple and more efficient due to the extensibility of the Wonderware software

Please download ‘City of Bremen, Germany’ Success Story to read more