Tesla is in talks to supply battery systems for three Bulgarian energy-storage projects, potentially challenging the Chinese manufacturers that have so far dominated the country’s rapidly expanding market.
The projects are planned in Stara Zagora, Tvarditsa and Veliko Tarnovo, former Energy Minister Delyan Dobrev said. He described the Veliko Tarnovo development as particularly large and said it could become one of Europe’s biggest storage facilities.
Project capacities and delivery schedules were not disclosed, while the negotiations have yet to produce a confirmed supply agreement.
Dobrev estimated that around €3 billion had already been committed to battery energy-storage projects in Bulgaria. Investment has accelerated alongside the country’s solar expansion, which is producing deeper daytime price reductions and a growing need to shift electricity into evening demand periods.
Batteries can absorb surplus renewable output, limit curtailment and reduce the exposure of solar producers to low or negative prices. They can also provide balancing and grid-support services, although returns will depend on market spreads, connection availability and future competition between storage operators.
A Tesla contract would diversify a supply chain heavily reliant on Chinese equipment and give the US manufacturer a potentially important foothold in Southeast Europe.
Bulgaria’s storage boom is rapidly changing the economics of its power market. Yet the volume of announced investment also raises a harder commercial question: whether price arbitrage and balancing revenues will remain strong enough once large numbers of batteries begin competing for the same hours.
