Sunotec secures financing for Bulgarian BESS, renewables portfolio
22 October 2025
Sunotec has secured financing for a portfolio of seven projects in Bulgaria. The deals were agreed in September.
The portfolio, for 115 MW in peak solar power capacity and 763 MWh of battery storage, significantly expands Sunotec‘s investment presence in its home market, according to the update.
Six projects are for standalone battery energy storage systems (BESS) and one is for a solar power plant with a colocated BESS.
According to the firm, they are either wholly owned or partially, through Solaris Holding AD, a 50/50 joint venture with the main shareholders of Eurohold Bulgaria AD. The standalone battery energy storage system projects are part of the government’s RESTORE program
The seven projects contribute to decarbonizing Bulgaria’s power sector, enhancing its grid stability and energy independence, Sunotec stressed.
The Bulgarian Ministry of Energy has approved the said standalone BESS projects to receive subsidies under the RESTORE program, the company added.
In the first round of the National Infrastructure for Storage of Electricity from Renewable Sources (RESTORE) program, Bulgaria approved EUR 587 million in subsidies for 82 BESS projects totaling 9.71 GWh. In late July, Sunotec and Sungrow agreed to install 2.4 GWh of BESS
In late August, the ministry launched the public consultation process for a proposed new round of its subsidy program for BESS.
Viktor Stefanov, Head of IPP at Sunotec, said the seven investments mark a major milestone in its evolution.
The company added that they further strengthen its position, as well as of Solaris Holding, among Bulgaria’s leading investors in photovoltaics and energy storage.
In late July, China-based Sungrow achieved an agreement with Sunotec on installing 2.4 GWh of BESS in Europe. The portfolio includes several large-scale projects across Bulgaria, which will serve energy storage needs.
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