Let's not waste heat!


Urban waste heat sources are increasingly important to reach 2050 targets as fossil fuels are being phased out. The ReUseHeat project financed under the European H2020 framework, is generating knowledge on how excess heat from data centres, sewage water treatment, service sector buildings and metro stations can be reused in district heating systems. The project aims to overcome both technical and non-technical barriers to the unlocking of urban waste heat recovery investments across Europe.

In this newsletter, we are delighted to invite you to our final conference in September. ReUseHeat is heading towards its complettion and we are proudly sharing the project achievements through a series of live sessions about urban waste heat recovery at our demonstration sites. Read more and stay in touch!

Data Centres

The data centre has a significant cooling demand, producing excess heat - which is being fed to a low temperature district heating network


Underground Transport

Waste heat produced in the tunnel of the metro network can be recovered and reused in a low-temperature district heating network


Awareness-Raising Dashboard

Visualisation of real-time energy usage of network users, including heating, cooling CO2 emissions and more.


Tertiary Buildings

An advanced solution based on heat recovery from a hospital's cooling production process is linked to the nearby district heating



Data centre commissioning

Last December the commissioning of the data center heat recovery took place at Brunswick, Germany. The heat pump operator was supported by the manufacturer to find the optimal parameter settings.

After two days of testing the commissioning was finalized and the heat pump went into operation. The next step is to increase the available heat load for the heat recovery to get a high ratio of waste heat in the total heat supply of the low-temperature network.



Give your opinion on the ReUseHeat dashboard!

In one of the ReUseHeat demo sites, we use the energy of the sea water, pumped at a depth of five meters. This network allows the recovery of the dissipated thermic energy produced by the heat pumps, which would normally be wasted in the air surrounding the building.

The ReUseHeat Dashboard allows to see network operation in real time!

Help us improve the Dashboard by responding to our short feedback survey!


Live Training Sessions

This April and May, ReUseHeat is organising online live trainings which focus on the stakeholder groups interested in urban waste heat recovery and integration in district heating networks.

Lectures, discussions and virtual site visits will be part of the trainings. The training sessions include both technical results and results linked to the business models, as well as experiences from the demonstrators.

See the schedule and register here.



Joint webinar on Energy Efficiency, Spatial Potentials and Future Developments.

sEEnergies project organises a series of webinars in March and April 2022. ReUseHeat project is joining on Thursday 21 April 2022, 09:00 – 10:00, the webinar on ‘Energy Efficiency, Spatial Potentials and Possible Future Developments‘ with a focus on future possibilities, where Kristina Lygnerud, the ReUseHeat project coordinator, will talk about recovery and utilization of low-temperature excess heat within European urban areas.



Final Conference

ReUseHeat joined by Celsius Initiative organise their final public events in a joint conference on 7 September 2022 in Brussels.

Key learnings and project outcomes along with all the experience from the demonstration sites will be presented.

Save the date.



This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 767429