Montenegro’s reservoir hydropower is gaining commercial value as gas-driven electricity prices in Europe can rise rapidly. The Perućica and Piva plants together represent 649 MW in official 2026 planning material, and stored water gives operators flexibility to choose when to generate. That matters in interconnected Southeast Europe, where high European gas prices can raise the marginal cost of electricity.
Hydropower accounts for the majority of installed generation capacity at EPCG, Montenegro’s power utility. When regional day-ahead electricity prices reach several hundred euros per megawatt-hour, reservoir output can reduce expensive imports, support domestic peak demand or capture export value when interconnection capacity is available. Its value also comes from shifting generation to the hours when the regional system values electricity most.
Managing water is therefore a market decision as well as an engineering one. Generating aggressively during an early price spike can produce immediate revenue, while stored water may become more valuable during a colder or tighter period later in winter. Operators must weigh current prices against expected future scarcity, inflows and security-of-supply requirements when deciding when to use reservoir stocks.
Montenegro’s energy plan for 2026 envisaged a stronger supply position following the expected return of the Pljevlja thermal plant and additions of solar generation. It set planned total national electricity output at 3,798 GWh. New renewable projects can reduce exposure to fuel costs while increasing the importance of flexible generation that can respond to changes in weather-dependent output.
Montenegro is not a major gas-fired power producer, but European gas prices can increase the opportunity value of its hydropower by affecting regional electricity prices. For EPCG and the wider electricity system, the commercial task is to optimize water, thermal availability, solar growth and cross-border trading as one portfolio. During a volatile winter, the most valuable megawatt-hour may be delivered when regional scarcity is greatest, rather than produced at the lowest cost.
