The silver coin with a nominal value of 10 EUR was minted in quality standard to the occasion of the 100th anniversary of the underground hydroelectric power plant in Kremnica.

The Kremnica miners, who struggled to extract treasures from the depths of the earth, needed not only courage and perseverance, but also ingenuity at work. Water served as their source of strength when human and animal muscles were not enough. Its deficiency in the Kremnica ore district was solved in the 15th century by the construction of the Turčekov Water pipeline, which captured water from the Turiec river basin. The miners made their work easier, but at the same time they had a lot of worries. When they needed to mine gold at greater depths, a good servant became an evil lord, and so they had to mine so-called hereditary drifts through which excess water flowed away. However, the miners got a completely new idea - they began to convert the driving force of water into electricity at the turn of the 19th and 20th centuries. An exceptional example of their technical skill was the underground power plant at a depth of 245 meters established in 1921.

The obverse side of the euro coin, which is the work of Štefan Novotný, is dominated by a detail of the historical technical equipment of the underground hydroelectric power plant in Kremnica. The composition is supplemented with the Slovak national emblem and the year of issue 2021. The reverse side presents above-ground and underground mining works as well as the Turček Water pipeline. In the right part of the reverse side there is the machinery of the underground hydroelectric power plant, in the left part you will find the intersection of the mine tunnels and the outflow of water from the hereditary drift. The text PODZEMNÁ VODNÁ ELEKTRÁREŇ KREMNICA is supplemented with the annual dates 1921 and 2021, which are separated by a threshing machine and a handcuff.

The coin was minted by the Mincovňa Kremnica Mint and issued by the National Bank of Slovakia.