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Climate City Ulm with biomass. Dipl. Ing. Dieter Danks Fernwärme Ulm GmbH Technischer Leiter. Stadt Ulm – Toprunner in the South. Ulm is a university town in Baden-Württemberg at the river Danube, located south-east of Schwäbischen Alb.

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Climate city ulm with biomass
Climate City Ulm with biomass

Dipl. Ing. Dieter Danks

Fernwärme Ulm GmbH

Technischer Leiter

Climate city ulm with biomass

StadtUlm – Toprunner in the South

  • Ulm is a university town in Baden-Württemberg at the river Danube, located south-east of Schwäbischen Alb.

  • Ulm has120.000 Inhabitants, the central town about 100.000 inhabitants.

  • The tower of the cathedral is with161,53 m one of the highest in the world.

  • A famous son of the town is Albert Einstein, born hier in 1879

Climate city ulm with biomass

StadtUlm – Aktiv Passiv

  • Science Park II does not only host global companies such as Daimler, Nokia, or Siemens, but also the worldwide biggest passive-energy office building

  • On the occasion of the World Exhibition EXPO 2000 the project „sun fields“ was constructed in Ulm. With110 single family buildings it was at that time the biggest passive-house settlement worldwide. In the meantime, 50 single houses have been added. Further passive-house settlements are in planning.

Climate city ulm with biomass

Ulm– City in a Climate Alliance

  • In 1993 Ulm has joined the Rio Climate Alliance. The city has committed to reducing its CO2 emissions, serving as indicator for overall environmental impact, by 50% compared to 1987 levels.

  • Like other cities, the city of Ulm is unlikely to reach this target. Generally, despite a great number of activities, all efforts are levelled out by steadily increasing traffic volumes.

  • The only hope of the city lies now with our company Fernwärme Ulm GmbH. Thanks to our district heating system, based almost entirely on CHP, extensive use of surplus heat and use of CO2-neutral fuels, significant progress allows to demonstrate significant progress and success.

Die fernw rme ulm gmbh

FUG is THE heat supplier in Ulm:

ca. 45 % of the entire heat demand of the city is being produced by FUG.

Die Fernwärme Ulm GmbH

  • Shareholders of FUG are:

    • - Energie Baden-Württemberg AG (EnBW)

    • - Stadtwerke Ulm/Neu-Ulm GmbH (SWU) Holding 50% each

  • FUG employs approx. 200 people

  • District heat supply in Ulm since 1950

  • The Technical Director FUG, Mr. Dieter Danks, has just been reelected for the 6th time by all environmental associations as chairman of the Local Agenda 21 in Ulm

Fug guidelines

The best energy is the one that is not being used.

The remaining energy should be used as efficiently and climate-friendly as possible.

Independence from imported energies.

FUG - Guidelines

Anteil der regenerativen energien

Germany 2004

Heat supply 4,2 %

Electricity supply 9,3 %

Germany 2020 (declared intentions)

Heat and electricity supply 20 % each

FUG 2005

50% share of renewable energies, incl. Energy from the MHKW Donautal

Outlook FUG from 2011

80% share of renewable energies

Anteil der regenerativen Energien

Climate city ulm with biomass

Ulmer Weststadt with Biomass CHP plant

Peak load Uni – TVZ Eselsberg

Waste CHP plant and peak load heating plant in Donautal

Peak load heating plant Fort Albeck

Production plants FUG

Müllheizkraftwerk im Donautal

Climate city ulm with biomass

CHP site Magirusstraße

Biomass CHP II (Fotomontage)

Biomass CHP I

Conventional CHP

Climate city ulm with biomass

Key parameters Biomass CHP I + II

  • Biomass CHP I

  • - start of operation: 2004

  • - heat capacity: 58 MW - electric capacity: 8,6 MW - combustion process: Vorschubrost - investments: 37 Mio EUR

  • Biomass CHP II (in planning)

  • - start of operation: planned for 2010

  • - heat capacity: 65-70 MW

  • - electric capacity: 20 MW - combustion process: Zirkulierende Wirbelschicht oder Vorschubrost

  • - investments: 83 Mio EUR

Intake of surplus heat

FUG is open to concepts from private investores:

Since1996 FUG buys surplus heat from saw dust from a big wood manufacturing plant.

Since 1997 FUG buys surplus heat from a waste incineration plant

Since 2006 surplus heat from a private biogas plant with a capacity of 500 kW is being fed into the network Wiblingen eingespeist .

In 2 month, a 1,7 km preinsulated pipe (under construction) will connect a a biogas plant in Gögglingen that is twice that size.

A further biogas plant is in the authorisation process.

Intake of surplus heat

Surplus heat from biogas
Surplus heat from biogas

Biogas plant under construction in Gögglingen with 5 enginescapacity: - electric 970 kW - thermal 1053 kWHeat supplied to DH Wiblingen, Return temp. Increase from 67°C to 83°C

Connection pipe hwd hkw technische daten
Connection pipe HWD – HKW Technische Daten

length: 5,5 kmtype of pipe: preinsulateddiametre: DN 400/630 (mm)

Operating temperature: max. 120°CPressure level: PN 25Max. transport capacity: 53.000 kWTime of construction:Daimlerstr.- Märchenweg: 08/2006 – 07/2007Märchenweg – Moltkestr.: 08/2007 – 06/2008Grabenquerschnitt:


Total fuel use fug 1995 to 2011
Total fuel use FUG 1995 to 2011


mit BioHKW II

Electricity production fug from chp annual electricity demand ulm approx 640gwh
Electricity production FUG from CHP ( annual electricity demand Ulm approx. 640GWh )



Climate city ulm with biomass

CO2-balance FUG: all fuels(incl. waste, biomass) without electricity bonus

Climate city ulm with biomass

CO2-balance FUG: all fuels (incl. waste, biomass) with electricity bonus

Operation from 2011 after ib biochp ii

CO2-neutral district heating supply FUG in Ulm

Almost complete independence from imported energies

Decentral electricity production

BioHeating Plant I+II ca. 160 Mio. KWh

CHP ca. 20 Mio. KWh

M Heating Plant ca. 60 Mio. KWh

Biogas Anlagen ca. 15 Mio. kWh

Total: ca. 255 Mio. KWh

Operation from 2011 (after IB BioCHP II)

This correspondes to 39% of the entire electricity demand in Ulm

Climate city ulm with biomass

Quo Vadis FUG ?

  • Construction of 5,5 km connection pipe HKW – HWD

  • Construction of biomass heating plant II, with 65 -70 MW therm. (in authorisation process)

  • Study conversion of steam network close to finalisation

  • Rerfurbishment of old boiler installations following revision of immission law until 2012

    • HKW Magirusstraße 3 boiler plants

    • HWD Daimlerstraße 2 boiler plants

  • Outphasing of old installations from 2012

    • HKW Magirusstraße 2 boiler plants

    • HWD Daimlerstraße 2 boiler plants

Konsequentes handeln nach den fug leitlinien

The best energy is the one not being used

Reservation of construction areas exclusively for passive houses

Identification of refurbishment areas, going hand in hand with refurbishment of existing building stock

Optimisation of district heating grid– conversion from steam

Independence from imported energies

Operation of planst with Biomass, Waste and (remaining) coal

Use of surplus heat

Supply remaining heat as efficient and environmentally and climate friendly as possible

Almost100% CHP, Modernisation of production parc

Konsequentes Handeln nach den FUG - Leitlinien