Project Description
The world’s first high pressure heat storage tank
Wien Energie put the world’s first high-pressure and high-temperature heat storage tank into service in 2013. The heat storage tank in Vienna’s Simmering district makes it possible for heating to be used when it is needed, regardless of when it was actually produced. It covers the annual heating requirements of around 20,000 households and saves around 11,000 tonnes of CO2 every year by optimising production and storage. Total investment amounted to EUR 20 million.
A picture says more than 1,000 words
See for yourself how our heat storage tank was built.
Project details
A heat storage tank was built in just 14 months for Vienna’s large and complex high-pressure and high-temperature district heating network. The storage tank uses and bolsters the production of renewable heat from the Simmering biomass power plant. Heat producers such as our thermal waste treatment plants and cogeneration plants are also integrated here.
Further reading
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Study on decarbonising Vienna by 2050
Wien Energie investigated the question of whether and how the Greater Vienna metropolitan area can be decarbonised by 2050. To ensure that Vienna continues to be the most liveable city in the world, investments must be made today in projects to decarbonise transport, heat and electricity.
Power-to-heat plant
The power-to-heat plant resembles an oversized kettle that converts excess electricity into environmentally-friendly heat. The plant has a total capacity of 20 MW and supplies 20,000 households with district heating, thereby playing a key role in maintaining stability in the power grid.
Large-scale heat pump
Utilising existing waste heat is an essential part of being able to supply heating in an even cleaner way. Simmering is where we run the most powerful large-scale heat pump in Central Europe, supplying around 25,000 households in Vienna with environmentally-friendly district heating, thereby saving 40,000 tonnes of CO2 every year.