Solar energy is rapidly evolving from a minor contributor to a fundamental component of the electricity landscape in South-East Europe. Recent developments indicate a significant acceleration in both utility-scale and distributed solar photovoltaic (PV) projects across the region, with solar generation now comprising approximately 15% of the regional power mix. Notably, early April saw an increase of +630 MW in solar output compared to previous periods, despite a decline in overall demand due to seasonal temperature fluctuations.
This surge in supply, coupled with reduced consumption, has intensified midday oversupply dynamics, which are increasingly influencing price formation and export behaviors within interconnected markets. The shift towards larger and more diverse solar projects is evident, particularly in Bosnia and Herzegovina, where state utility EPBiH is advancing a 50 MW solar project in Gračanica. This initiative is supported by a financing arrangement that includes €25 million from the EBRD and €15 million from UniCredit, marking it as one of the first utility-scale photovoltaic investments aligned with the country’s post-coal transition strategy.
In addition to large-scale projects, distributed solar initiatives are gaining traction across public infrastructure. EPBiH has initiated the deployment of rooftop PV systems at various operational facilities, with capacities ranging from 25 kW to 240 kW. These efforts reflect a broader trend towards decentralized energy generation models that enhance internal energy balancing within state utilities. Although these installations represent modest aggregate capacity, they play a crucial role in minimizing system losses and managing localized demand peaks.
Romania is emerging as a leader in solar market dynamism, characterized by extensive portfolios that integrate photovoltaic generation with storage solutions. Recent advancements include substantial hybrid solar and battery projects backed by international investors, alongside a pipeline focused on gigawatt-scale capacity expansions. This growth is complemented by grid investments exceeding €280 million annually, aimed at supporting increased renewable penetration and facilitating cross-border electricity exports.
<pIn Greece, solar deployment has reached industrial proportions, exemplified by PPC's completion of 2.13 GW of solar capacity in Western Macedonia. This transformation of former lignite regions into renewable energy hubs is beginning to affect regional price curves, especially during daylight hours when solar generation increasingly displaces gas-fired marginal units.
Albania, historically reliant on hydropower, is also integrating solar into its energy portfolio through projects like the 140 MW Karavasta solar plant and new battery-linked installations near Fier. The strategic focus here extends beyond mere generation; it aims for flexibility through storage systems designed to address hydrological variability and stabilize export capabilities.
Montenegro’s solar pipeline remains nascent but strategically important, with planned developments such as the 250–300 MW Briska Gora solar park and floating PV concepts at Krupac. These initiatives signal Montenegro’s intent to utilize its interconnections with Italy for renewable energy exports.
A significant challenge facing the region is grid capacity; over 120 GW of renewable projects across Europe are at risk of delays due to network congestion. This issue is prevalent in South-East Europe as well, where transmission constraints are increasingly dictating project timelines and investment strategies. Developers are prioritizing sites with available connection capacity to mitigate these risks.
The rising penetration of solar energy is also reshaping market dynamics. As midday prices compress due to increased solar output, trading strategies are being adjusted accordingly. During April 1–15, electricity prices across South-East European exchanges averaged between €94 and €102/MWh, although daily volatility has intensified as solar production peaks.
The implications for market structure are profound. Solar energy is not merely reducing fuel costs; it is actively redefining dispatch patterns, export flows, and pricing mechanisms. As the marginal cost of generation during peak solar hours approaches zero, the demand for flexibility—through storage solutions, demand response mechanisms, or enhanced cross-border capacities—is becoming increasingly critical.
The future trajectory of solar development in South-East Europe suggests ongoing expansion with an emphasis on system integration rather than sheer capacity growth. Hybrid projects that combine solar with storage and co-locate with existing hydro assets are expected to dominate future investments. The region’s success in converting this capacity into sustained export revenues will hinge on addressing grid bottlenecks and aligning market frameworks with the realities of high renewable penetration.
