Electricity.Trade’s May 2026 analysis shows Croatia as one of the clearest import-dependence stories in the region. The CROPEX monthly average surged to €103.58/MWh, up 14.55% from April and 23.48% year on year. This placed Croatia above Bulgaria and Serbia, and close to Hungary’s €106.51/MWh. The price rise was not matched by higher exchange liquidity, as monthly traded volume fell to 877.24 GWh, down 3.97% month on month, although still 19.79%higher than in May 2025.
The central trading issue was Croatia’s physical reliance on imports. Net electricity imports reached 583.90 GWh, up 20.59% from April, and accounted for 43.78% of the country’s electricity mix. Renewables contributed 33.19%, hydro 22.83%, and gas only 0.19%. This structure makes Croatia highly sensitive to neighbouring market conditions because domestic thermal flexibility is limited and imports form the largest single component of the electricity balance.
Croatia received electricity from Hungary and Slovenia while exporting to Bosnia and Herzegovina and Serbia. The direction of flows shows Croatia positioned between higher-liquidity Central European markets and Western Balkan systems. But the scale of imports also means that CROPEX pricing is exposed to congestion, weather conditions in neighbouring markets and regional availability of exportable power. When import requirements rise, domestic price formation can quickly move toward the premium zone.
The May hydro signal adds another layer. Croatia’s hydropower generation declined by 21.17% month on month, weakening a key domestic source of flexibility. Renewable output was almost flat, rising only 0.13%, which meant that Croatia did not benefit from the same RES uplift seen in Bulgaria, Romania or Greece. This explains why imports expanded while prices rose sharply.
For traders, Croatia is becoming a market where import coverage, cross-border spreads and daily liquidity need to be monitored together. CROPEX’s year-on-year volume growth indicates market development, but the monthly decline in traded volume during a high-price month suggests that liquidity depth remains uneven. Electricity.Trade should frame Croatia as a premium-risk market: attractive when cross-border access is available, exposed when neighbouring supply tightens, and increasingly important for traders watching the Hungary-Slovenia-Western Balkans corridor.
