Before World War II The club's roots date back to the period before
World War II, when enthusiasts started skating on a natural ice surface. The name of Karlo Vergles is mentioned most often with regards to these ice hockey beginnings. In the 1940–41 season, the first amateur team was assembled with simple equipment mostly made in the local steel and iron factory. Despite that, Jesenice team lost their first game to Zagreb with just a one-goal difference. Development of hockey continued in Jesenice in the following years with the opening of the artificial ice hockey surface in 1954, which was the first in former Yugoslavia. The new venue also included a stand for spectators. After the 1971 season, the Yugoslav championship was more or less divided equally between Jesenice and
Olimpija. Jesenice have won the league in
1972–73,
1976–77,
1977–78,
1980–81,
1981–82,
1984–85,
1986–87, and
1987–88. Jesenice have also won the 1974 championship, but the title was later taken away from them by the ice hockey federation. Notable about this period is that the majority of players came from Jesenice or neighboring cities. It took a couple of years for Jesenice to bounce back and in the 2004–05 season, with the arrival of four players from Olimpija, Jesenice won the championship for the first time in over ten years. in 2006, Jesenice were invited as the first non-Austrian team to play in the expanded
Austrian ice hockey championships. From 2006 and until 2012 the club has also won four more Slovenian titles (2008, 2009, 2010, and 2011).
Bankruptcy and dissolution The club had accumulated debt, reportedly near €2.5 million, at the conclusion of the 2011–12 EBEL season, and was eventually expelled from the league. On 31 August 2012, HK Acroni Jesenice filed for bankruptcy and were dissolved. Their affiliate
HD Mladi Jesenice were registered and run separately from the main squad. ==Arena==