Kölnbreinsperre – exciting facts on the topic of hydropower

Get an overview in the exhibition VERBUND Energy World Malta, enjoy a fantastic view from the Airwalk at the dam, gain insights on a guided tour through the inside of the Kölnbreinsperre.

At the VERBUND Energy World Malta, you’ll learn more about the construction of the Kölnbreinsperre through historic photographs. A large relief and an interactive presentation offer insights into the Malta-Reisseck power plant group. You will also get extensive information on site about the Malta power plant group, with the newly constructed underground pumped storage power plant Reisseck II.

Admission to the Energy World Malta is free for all visitors to our excursion destination!


Airwalk an der Kölnbreinsperre
What a view!
This is a once in a lifetime opportunity: standing on a glass surface, with an unimpeded view 200 metres down into the bare abyss and all around a breathtaking view of the high alpine landscape of the Hohe Tauern.
Only on the Airwalk can you experience the architecture of the Kölnbreinsperre in all its facets: when the wall arches over your head and the massive structure of 2 million m³ of concrete spreads out in front of you – which, by the way, has almost the same volume as the Great Pyramid of Giza (2.6 million m³).

Dam wall tour

Staumauerführung Kölnbreinsperre
Deep into the interior of Austria’s biggest dam

With a height of 200 metres and a width of 626 metres, the Kölnbreinsperre is the largest dam in Austria. At peak times, it holds back 200 million m³ of water, which could be used to fill a bathtub for 1.4 billion people (20% of the world’s population).

Technical values are monitored daily at 2,500 measuring points. A tour of the dam gives you the opportunity to learn more about electricity generation and to explore the inside of the dam.

Two men in work clothing walking through the interior of the dam.

Meeting point & times


June-September: daily from 9:00 am to 4:00 pm at regular intervals
May & October: on request

INFO Berghotel shop:   050 313 39 129
INFO group inquiries: 050 313 39 363 

You can purchase tickets in the souvenir shop in the Berghotel, bus park level.
Also located here is the meeting point for the dam wall tours.

Tip: The temperature in the dam wall is a constant 8 °C all year round.
Warm clothing and sturdy footwear are recommended.

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Prices of dam wall tour

Adults  € 9.00
Children 0-5 years  Free
Children & groups of schoolchildren 6-15 years  € 7.00
 Duration of the tour  approx. 1 hour


Facts & figures on the Kölnbreinsperre

The VERBUND power plant Malta Upper Stage is a pumped storage power plant situated in Brandstatt in the municipality of Malta in Carinthia. It was built between 1974 and 1977 with the financial participation of Kelag and Energie AG. The power plant, which generates 37,870 MWh of electricity annually, was put into operation in 1979.