Located in Ozalj, the Munjara hydroelectric power plant has operated since 1908 and is recognized for its unique historicist architecture.

Key facts
- •The Munjara plant is the oldest hydroelectric power plant in continental Croatia.
- •Construction of the facility was completed in 15 months.
- •The plant is a protected cultural asset under the Croatian Directorate for the Protection of Cultural Heritage.
- •Initial operations utilized two Francis turbines to power public lighting in Karlovac.
- •The site is located 17 kilometers from the city of Karlovac.
The Munjara hydroelectric power plant in Ozalj, Croatia, is a functional industrial facility noted for its castle-like appearance. Situated on a natural waterfall on the Kupa River, the plant has been in continuous operation since 1908. It serves as a protected cultural asset under the supervision of the Croatian Ministry of Culture.
By the numbers
Design and Construction
The facility was constructed over a 15-month period according to designs by civil engineer Valerijan Rieszner. Its historicist exterior, which features neoclassical elements such as arcades and battlements, was designed by Austrian architect Hermann Bollé. Bollé is also known for his work on the Mirogoj cemetery and the Museum of Arts and Crafts in Zagreb.
Historical Context and Impact
The plant's development was influenced by Nikola Tesla, who lobbied for the construction of a hydroelectric plant on the Kupa or Korana rivers as early as 1892. Upon its opening in 1908, the plant provided public lighting to Karlovac, with electricity consumption initially offered for free. Following the Second World War, the facility supported the industrial development of Ozalj, Karlovac, and Duga Resa, leading to the construction of a second plant on the river's left bank in 1948.
Current Operations
Today, Munjara continues to generate electricity, maintaining an average of more than 5,000 hours of operation per year. The plant is open to the public through guided tours conducted by its expert staff.
Timeline
- 1892Nikola Tesla lobbied for the construction of a hydroelectric plant on the Kupa or Korana rivers.
- 1908The Munjara hydroelectric power plant was put into operation to supply lighting to Karlovac.
- 1948Construction of a second hydroelectric power plant began on the left bank of the Kupa.
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This article was independently rewritten by ManyPress editorial AI from reporting originally published by Total Croatia News.

