EU project ReUseHeat komt met 25 business cases

Het Horizon 2020-project ReUseHeatheeft een handboek gemaakt met 25 praktijkvoorbeelden van hergebruik van warmte in Denemarken en de rest van Europa. 

ReUseHeat facts and figures

  • District energy & waste heat
    If the urbanisation trend continues and appropriate investments are in place, almost half of Europe’s heat demand could be met by district energy by 2050.
  • There is on average 3 times more renewable and excess heat available than is required to meet high levels of district energy supply
  • A transition to district energy systems, combined with energy saving measures, could contribute as much as 58% of the carbon dioxide emission reductions required in the energy sector by 2050.
  • Data centres
    The total energy consumption of data centres in Europe was, in 2007, of 56 TWh/y and is expected to increase up to 104 TWh/y in 2020.
  • A midsize data centre with 1 MW IT load releases 3,700 MWh thermal energy per year into the atmosphere.
  • The potential waste heat that could be recovered by data centres in the future amounts to 48 TWh/year.
  • Waste water management
    More than 84% of EU population is connected to a sewage network, with an even higher number in urban areas.
  • 5% of total heat demand could be covered with waste heat recovered from sewage systems in urban areas with more than 10,000 inhabitants.
  • The potential waste heat that could be recovered from sewage systems across the EU corresponds to about 150 TWh/year.
  • Tertiary buildings: hospitals
    There are over 7,000 hospitals in Europe.
  • Considering a conservative potential waste heat recovery of 450 MWh/year, this would be translated into around 3.3 TWh/year of potential waste heat that could be captured from the cooling systems of hospitals in urban areas.
  • This potential can be tripled up to 10 TWh/year if we take into account other tertiary buildings in urban areas such as supermarkets, food logistics centres, slaughterhouses.
  • Underground transport
    The EU has 50 medium- and large-sized cities with metro systems, with a total length of 2,800 km and transporting 31 million passengers/day.
  • Waste heat could potentially be recovered from 2,800 stations across Europe, with an average heat recovery of 0.3-0.5 MW per underground station.

A total of 6.7-11.2 TWh/year of waste heat can be recovered at EU level from underground stations.



  1. Waste water as heat source
  2. Excess heat from vegetable market
  3. Super Supermarkets
  4. Synergies between industry and district heating
  5. Heat recovery from local paper mill
  6. Industrial waste water used for district heating
  7. Energy optimization in a supermarket
  8. District heating from crematory
  9. Co-production with a gas engine driven heat pump
  10. Excess heat from hospital chillers
  11. Excess heat from mink coat storage
  12. Exploiting excess heat from a converter station

International Cases

  1. Heat recovery from the London Underground in Islington, UK
  2. Sewage water demonstrators in Cologne, Germany
  3. Excess heat from lignite mining in Bergheim, Germany
  4. Datacenter supplies local heating in Mäntsälä, Finland
  5. Heat pumps using waste water in Gothenburg, Sweden
  6. Open District Heating in Stockholm, Sweden
  7. District cooling in Helsingborg, Sweden
  8. Energy recovered from sewage water in Sandvika, Norway
  9. Excess heat from data centre in Val d’Europe, France
  10. District heating in Castelnuovo del Garda, Italy
  11. Industrial residual heat and transmission in Leiden, Netherlands
  12. Heat recovery at hospital in Budapest, Hungary
  13. Excess heat from sewage in Hamburg and Singen, Germany

The ReUseHeat project will showcase replicable models enabling the recovery and reuse of excess heat available at urban level, with the aim to increase energy efficiency of district heating and cooling systems in cities across Europe.

  • Integrating low-carbon sources in heat networks
  • Making use of heat that would otherwise go to waste
  • Boosting energy efficiency in cities

Link naar het rapport


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