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This section lists contacts for each subject area:

Pilot projects and research projects

See the information box in the right column of the respective project description for addresses and contacts.

Research funding and research management

If you would like to participate in EnEff:Stadt or EnEff:Wärme with a contribution or project, you can find further information and contacts at the project management body Projektträger Jülich (PtJ), which coordinates the Energy-efficient city research initiative on behalf of the German Federal Ministry of Economics and Technology (BMWi).

EnEff:Stadt accompanying research

The accompanying research team of EnEff:Stadt is a technical contact for projects and development work:

  • Carsten Beier, Fraunhofer UMSICHT, Coordination of the accompanying research team
    Key areas: Energy-efficient energy conversion/distribution, simulation tools, infrastructure planning, energy concepts
  • Hans Erhorn, Fraunhofer IBP,
  • Heike Erhorn-Kluttig, Fraunhofer IBP,
    Key areas: Energy-efficient buildings, calculation software at a building level, energy performance certificates, LCA, guidelines

  • Dr. Reinhard Jank, Volkswohnung Karlsruhe, reinhard.jank(at)
    Specialisms: Energy system models, building industry strategies, evaluation criteria, energy concepts

  • Dr. Armand Dütz, pro:21, duetz(at)
  • Thomas Bloch, pro:21, bloch(at)
  • Jessica Löffler, pro:21, loeffler(at)
    Key areas: Energy—efficient neighbourhoods, balancing, evaluation criteria, community aspects/urban planning, community climate protection policy, community practice

Editorial team

Send us your opinion or comments. Write to us at redaktion(at)
or redaktion(at)

Additional information: