Sharp fall after September 14 surge
Romania’s average day-ahead electricity price decreased from approximately €238/MWh on September 14 to €189.58/MWh on September 15. The move represents a reduction of around 20% within 24 hours. Despite the decline, the market stayed among the most expensive in Southeast Europe. Prices were slightly above Bulgaria and Greece, and close to the level recorded in Hungary.
Wind forecasts ease cross-border pressure
The lower prices were driven primarily by improved wind-generation forecasts across northern and western Europe. Higher wind output reduced Germany’s import requirement, which eased pressure on interconnectors. With less need for imports, more electricity became available for neighbouring markets.
Coupled-market flows raise Romanian prices during scarcity
On September 14, Romania had effectively transmitted part of a Central European supply shock into its own pricing. Electricity flows from lower-priced southern markets toward Hungary and Central Europe increased upward pressure on Romanian day-ahead prices. This reflected how quickly scarcity signals can spread across Europe’s coupled power markets.
Nuclear unavailability and limited flexibility affect supply balance
Domestic conditions amplified the cross-border pricing movement. The unavailability of the 1,400 MW Cernavodă nuclear plant removed Romania’s largest source of continuous low-carbon generation. Weak hydrology, limited storage, and insufficient volumes of flexible low-cost capacity left the system more reliant on imports and expensive thermal generation during peak hours.
No new capacity; marginal pricing set by gas fewer hours
The September 15 price drop did not indicate a structural improvement in Romania’s supply position. No new dispatchable plant or material storage capacity entered operation between the two trading sessions. Instead, changes in European wind conditions reduced the number of hours when gas-fired generation was needed to set the marginal price.
Price swings raise exposure for unhedged positions
The volatility has implications for industrial consumers and suppliers holding unhedged positions. A move of almost €50/MWh within one day can increase cash-flow and collateral requirements. This applies even when an average monthly supply position appears manageable.
Installed renewables versus dependable output
Romania has expanded solar and wind capacity rapidly, but market outcomes highlight differences between installed capacity and dependable output. Batteries can shift solar production across several hours, while hydropower, demand response, interconnection upgrades, and flexible generation are needed to cover longer periods of low renewable availability. Until those resources expand, Romania remains sensitive to weather patterns and generation outages beyond its borders.
