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Bulgaria

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Bulgaria’s battery fleet exceeds 6 GW as solar shifts to storage

Battery operators across Southeast Europe are increasingly buying solar-heavy midday electricity and shifting it for sale in later hours, with Bulgaria leading the trend. Serbia has begun recording negative day-ahead prices, which can provide a variable source of low-cost electricity for storage.

Bulgaria’s more than 6.2 GW battery fleet can reshape power prices

Bulgaria’s storage fleet is estimated at more than 6.2 GW of power capacity and 19 GWh of energy capacity, enough to reshape regional day-ahead prices. By shifting electricity between low- and high-price hours, batteries support exports during scarcity periods while compressing the spreads available to storage projects.

Bulgaria Battery Fleet Exceeds 6 GW as Solar Moves to Storage

Battery operators across Southeast Europe are increasingly buying solar-heavy midday electricity to sell later, with Bulgaria leading the trend. Serbia has begun recording negative day-ahead prices, creating a potential but variable source of low-cost power for storage.

ESO invests more than 182 million euros in Bulgaria grid upgrades

Bulgaria’s transmission system operator ESO has invested more than 182 million euros in network modernisation since the start of 2026. The work includes construction and reconstruction of more than 120 kilometres of transmission lines.

Bulgaria shifts to net electricity imports as renewable generation declines

Bulgaria shifted from a net electricity exporter to a net importer in the week ended November 1, as rising consumption and falling wind and...

Bulgaria records 74.90 GWh net imports as renewable output falls

Bulgaria became a net electricity importer in the week ended November 1, after previously being a net exporter of electricity. Higher consumption and falling...

Latest news

CBAM evidence gap could cost Western Balkan wind €8.9 million

Low-carbon electricity from Western Balkan renewable projects will not automatically qualify for actual-emissions treatment under the EU’s CBAM. The Energy Community Secretariat modelled €8.9 million in opportunity costs for a 130 MW wind project over six months if it had to sell locally instead of accessing higher-priced EU markets.

Western Balkan-EU power exchanges fall 17.8% as day-ahead trade grows

Scheduled electricity exchanges between the Western Balkans Six and neighbouring EU markets fell 17.8% in January–September 2026, while regional day-ahead trading volumes rose 26.7% year on year in the third quarter. The Energy Community Secretariat’s assessment links the diverging trends to a market in which CBAM costs and conditions increasingly shape cross-border trade.

EU power importers face CBAM deadline on 30 September 2027

EU electricity importers must declare embedded emissions and surrender CBAM certificates for power imported in 2026 by 30 September 2027. Certificate purchases begin in February 2027, making emissions evidence and the allocation of costs relevant to electricity contracts.

Energy Community urges aligned CBAM rules for Western Balkans

The Energy Community Secretariat called for closer coordination between Western Balkan electricity market integration and the EU’s carbon border rules. It warned that poorly aligned arrangements could discourage renewable investment and divide EU and non-EU electricity markets.

CBAM puts Western Balkan renewable exports at financing risk

EU carbon-border rules could affect the prices and revenues available to renewable projects in Serbia, Montenegro and the wider Western Balkans. Lenders may need to distinguish between domestic sales, exports under default emissions treatment and exports meeting actual-emissions evidence requirements.