Croatia recorded a 54.3% fall in variable renewable generation in the week to 20 September, while its net electricity imports increased. Hydropower output rose 34.28%, offsetting part of the wind and solar decline. The increase in hydropower was not enough to prevent a 4.20% rise in net imports.
Croatian electricity demand fell 9.76% to 325.54 GWh, the largest percentage demand drop among the markets covered. The weekly figures indicate a shift in Croatia’s supply mix during a period when consumers used less power. They do not show, on their own, how much of the renewable shortfall was met by hydro, domestic thermal generation or imports in each hour.
Hourly balancing implications for suppliers and hydro operators
The hourly breakdown is relevant for commercial operations when wind and solar output declines. Suppliers must cover delivery commitments under lower renewable generation conditions. Hydro operators also face scheduling choices over when to use available output, with import prices and border capacity influencing decisions.
Power price movement alongside cross-border purchases
Croatia’s weekly average power price eased by 0.35%. Despite the modest change, the data reflect an operational shift as renewable output fell sharply and cross-border purchases rose while demand contracted.