Slovenian energy company GEN-I will manage a 200 MW battery storage portfolio in Bulgaria, marking a significant expansion of its energy services in Southeast Europe. The facilities, developed by solar and energy storage leader Sunotec, will play a vital role in stabilizing the regional electricity grid and supporting the integration of renewable energy sources.
GEN-I Secures 5-Year Partnership for Bulgaria battery storage Management
Slovenian energy firm GEN-I has entered into a five-year partnership agreement to manage a significant battery energy storage system (BESS) portfolio in Bulgaria. This collaboration with developer Sunotec involves two large-scale facilities currently under construction: one with a capacity of 150 MW / 379 MWh and another at 50 MW / 126 MWh. This combined 200 MW capacity will position the portfolio as one of the largest in the region.
Under the agreement, GEN-I will serve as the asset optimiser. This means it will leverage its expertise in energy trading and advanced algorithmic trading on European markets to maximize the efficiency and value of the stored energy. For GEN-I, this marks its first major foray into large-scale battery storage management, building on a strong foundation of renewable energy projects in its home country, where impressive solar and battery expansion is planned.
This project represents a significant step forward for both companies. For GEN-I, it is an opportunity to showcase its sophisticated energy management capabilities. For Sunotec, which is headquartered in Sofia, it ensures its state-of-the-art storage solutions are operated to their full potential, contributing effectively to the future of renewable energy.
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A Major Boost for Bulgaria battery storage Energy Infrastructure
The combined 200 MW battery storage portfolio is designed to be a cornerstone of Bulgaria’s modernizing energy grid. Its primary function is to store excess electricity generated from intermittent renewable sources like wind and solar. Understanding the basics of solar panel manufacturing helps clarify how this energy is initially produced. The stored energy can then be dispatched back to the grid during periods of high demand or when renewable generation is low, such as on calm, cloudy days.
This capability is crucial for balancing supply and demand, reducing the risk of power outages, and enabling a greater share of green energy. The use of grid-scale battery storage is becoming increasingly vital across Europe as the continent transitions away from fossil fuels. This trend is visible across the continent, with a notable Europe battery storage project in Belgium also pushing the boundaries of what’s possible.
The Bulgarian government has been actively supporting such projects to meet its climate goals. This portfolio will directly contribute to increasing the share of renewables in the country’s energy mix and supports its broader national plans for a sustainable energy future, which also include developing green hydrogen infrastructure.
Slovenian GEN-I and Sunotec Partner to Enhance Bulgaria battery storage
Both GEN-I and Sunotec have emphasized the project’s importance for regional energy security and sustainability. The partnership combines Sunotec’s development prowess with GEN-I’s advanced market optimisation skills.
Sunotec is a leading developer with a strong international track record, having delivered over 650 ground-mounted PV installations across Europe totaling more than 11 GW of capacity. The companyโs CEO, Thomas Koller, highlighted the project’s significance, stating, โWe are proud to work with GEN-I on this project, which will play a vital role in supporting the integration of renewable energy in Bulgaria and the wider region.โ
GEN-Iโs role as an asset optimiser will ensure the batteries are used intelligentlyโcharging when power is cheap and plentiful and discharging when it is most needed and valuable. This enhances grid stability for consumers and improves the economic viability of renewable energy generation.
GEN-Iโs Growing Influence in Southeast Europeโs Bulgaria battery storage Market
The two battery storage facilities are expected to be fully operational by the end of March 2026. Once online, they will provide much-needed flexibility to the Bulgarian electricity grid, paving the way for more wind and solar power plants to be connected.
This project is part of a broader trend of renewable energy development across Southeast Europe, with initiatives like a stunning 200 MW solar plan in Montenegro also making headlines. For GEN-I, this partnership solidifies its position as a key player in the regional energy transition. The company is actively involved in various green energy projects, reflecting a national commitment to innovation where Slovenia is also exploring innovative solutions like floating solar power.
As Europe continues its shift towards a cleaner energy system, projects like this one in Bulgaria will be essential for ensuring a stable, reliable, and sustainable electricity supply for everyone.
If you’re interested in learning more about the technologies driving this green revolution, from the raw materials to the final product, consider enrolling in our free e-course on solar panel manufacturing.
