Electricity.Trade’s May 2026 market trend review shows that demand signals across Southeast Europe were far from uniform. Some markets recorded stronger electricity consumption, while others saw noticeable declines. Yet prices rose across most European SEE markets. This divergence is important because it shows that May’s price strength cannot be explained by demand alone.
Serbia recorded one of the strongest demand increases, rising 4.26% month on month. Italy followed with 3.29%, while Greece increased 2.44%. These markets provide the clearest demand-supportive price stories. Serbia moved to a monthly average of €96.63/MWh, Italy remained at a high €119.35/MWh, and Greece edged up to €88.98/MWh despite strong renewable and hydro output. In Serbia, higher demand coincided with weaker hydro and a shift into net imports of 422.97 GWh, making the demand signal especially relevant.
But in other markets, demand fell while prices still increased. Bulgaria’s consumption declined 9.66%, Hungary fell 7.51%, Türkiye declined 5.09%, Croatia fell 4.24%, and Romania decreased 3.59%. Despite that, Bulgaria’s average price rose 11.08%, Hungary’s 10.31%, Croatia’s 14.55% and Romania’s 14.66%. Türkiye was the major exception, with its price collapsing to €11.17/MWh as lower demand coincided with a hydro-heavy system and a different market trajectory.
The May pattern shows that price formation in SEE is increasingly regional rather than purely domestic. A country can experience falling demand and still face higher prices if it is import-dependent, exposed to gas-linked marginal costs, affected by weaker hydro, or linked to higher-priced neighbouring systems. Croatia is a good example: demand fell, but net imports rose to 583.90 GWh and prices increased sharply. Romania also saw demand decline but prices rose as nuclear generation plunged 77.31%, gas generation increased and the country remained a net importer.
For Electricity.Trade, the key market trend is that SEE demand must be read alongside supply structure. Demand growth matters, but it is no longer the only or even always the main driver of price movements. In May, the market was shaped by the interaction of demand, hydro, renewables, imports and gas costs. That makes price forecasting more complex and raises the value of integrated market models that combine load, generation mix, flow constraints and fuel pricing into a single trading view.
