An area of around 7,200 square meters on the roofs of Hall D and Hall F generates around 1.5 million kilowatt hours of electricity per year.

Covering a total area of around 7,200 square meters (Hall D + Hall F), the system on the roof of Austria's most important event location now has a total output of 1,530 kWp. This means that around 1.5 million kilowatt hours of electricity can be generated each year - roughly equivalent to the annual consumption of 795 single-person households in Vienna. 

The total area of 3,881 photovoltaic modules installed on the roofs of the Wiener Stadthalle is roughly the size of around 30 tennis courts. According to the Austrian Energy Agency's calculation tool, this can save 669 tons of carbon dioxide per year. With a service life of 25 years, that is a total of 16,725 tons.

Over 70 percent of the solar power from the roof of Hall F is used in Hall F itself. Around 80 percent of the green energy generated on the roof of Hall D is consumed by the building itself. The surplus is fed into the Wiener Netze electricity grid.