Underground Sun Storage 2030 - Start

EVN is a leading, international, listed energy and environmental services company based in Lower Austria, the largest Austrian province.

In its home market, EVN offers electricity, gas, heat, drinking water supply and wastewater disposal as well as thermal waste utilisation "from a single source" on the basis of state-of-the-art infrastructure. The product range also includes the operation of cable TV and telecommunications networks as well as the provision of various energy services for private and business customers and municipalities.

Around 4.8 million customers relied on the secure supply of energy and environmental products and services from EVN in the 2019/20 financial year. 

Project goals

With this project we want to show that "green gas" is an energy source with a future. Because the end of natural gas does not necessarily mean the end of gas. "Green gases" (including hydrogen) not only offer the possibility of saving CO2 in sectors that are otherwise very difficult to decarbonise via sector coupling, "green gases" make it possible to use the infrastructure that has been built over decades.

"We are already well on the way to expanding renewable energies. Important building blocks on the last few metres are the storage facilities. While day/night fluctuations can already be balanced with batteries today, innovative solutions are still needed for seasonal storage. The conversion of surplus solar and wind power into large-volume and seasonally storable gaseous energy carriers such as hydrogen can make a major contribution here."


EVN Platz

2344 Maria Enzersdorf


Stefan Zach

Leiter Information und Kommunikation, EVN Konzern

M +43 (0) 676 810 32294