The jointly owned Slovenian-Croatian Krsko nuclear power plant generated 457,822 MWh of net electricity in August, missing its monthly production plan by 8.44%.
The plant had targeted 500,000 MWh. In August 2025, it generated 505,322 MWh, about 1.06% above the same planned monthly level.
Despite the production shortfall, Krsko reported no technical problems. The plant operated within its technical specifications, all safety systems remained functional, and both availability and capacity factors were reported at 100%.
The combination of full availability and lower-than-planned output indicates that the shortfall was not caused by an outage, although the published figures did not identify the underlying operational reason.
Krsko is equally owned by Slovenia and Croatia and represents a major source of low-carbon baseload electricity for both countries. Variations in its output can materially affect their import requirements, particularly when hydroelectric conditions are weak or regional spot prices are elevated.
The August gap amounted to more than 42,000 MWh against plan. That is manageable for a single month, but sustained underperformance would matter for procurement strategies in both markets as they prepare for the higher-demand winter season.
