KES Karlsruher Energieservice

Smart District Karlsruhe-Durlach

Funding code: 03ET1590 A/B/C

Funding period: 09/2018 until 11/2023

Project partner: KES – Karlsruher Energieservice GmbH, Fraunhofer ISE, INATECH – Uni Freiburg


The project consists in the implementation of a complex energy supply concept for a cluster of 5 existing MFH in Karlsruhe. The present conventional supply should be replaced by a partly autonomous energy system made of a natural gas CHP plant (80 kWel, 130 kWth), 2 performance-controlled heat pumps (20 ‚ 80 kWth) and PV installations on the roofs. The system should be conceived and operated in such a way that local energy supply is used as much as possible (solar energy, environmental energy) and electricity surplus fed back in the main grid is limited as much as possible.

Demonstration of the following components:

  • Energy supply concept for natual gas driven CHP – heat pumps – PV installations combination (ISE, KES)
  • Multi-source heat sources (Viessmann)


Existing building, cluster of buildings, union concept (f.l.t.r.)


Presentation Smart District Karlsruhe-Durlach


Contact persons

Arnulf Dinkel, Project Manager ISE
Fraunhofer Institute for Solar Energy Systems ISE
Energy efficient buildings
+49 (0)761 4588 5887

Reinhard Jank, Coordinator for KES Karlsruher Energieservice GmbH
Ettlinger-Tor-Platz 2, 76137 Karlsruhe
+49 (0)721 599 0