Wien Spittelau High Temperature Heat Pump

THERMAFLEX DEMO PROJECT: Use of the heat from the flue gas by means of a high-temperature heat pump

This demo is part of the lead-project ThermaFLEX that has been completed successfully. Download the final report.


In this project it is planned to use the waste heat from the flue gas condensation of the waste incineration plant in the Spittelau in Vienna as a source for a heat pump and to make a direct feed into the primary district heating network of the City of Vienna possible by incorporating the findings from the test of different operating strategies. The thermal capacity of the planned heat pump is more than 10 MW.

>> to the ThermaFLEX lead project


Rusbeh Rezania
T: +43 14004749121

Project key facts

01.11.2018 - 31.10.2022

funding program
Flagship Region Energy

Project type
Demonstration project

Project budget
18.000.000 €

Project management

Wien Energie GmbH

The following model solutions are being developed in the Wien Spittelau High Temperature Heat Pump project:


Media reports on the project

Burn in the best possible way

In the Spittelau waste incineration plant, a modern heat pump based on the Scandinavian model is to use the heat from the flue gas. This saves water, C02 and supplies thousands of additional households with heat.

To the article
Heat for another 16,000 households

A new large-scale heat pump at the Vienna Spittelau waste incineration plant will heat 16,000 Viennese residents in future. An additional 16 megawatts of power will increase the efficiency of waste incineration by 13 percent. The plant is a ThermaFLEX demonstration project in the Green Energy Lab portfolio.

To the article