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A 601 MWh battery energy storage system (BESS) project developed by China-based CATL and Eastern European renewable energy company Solarpro Holding has been connected to the grid in Bulgaria. The project partners call it the largest operational energy storage facility in Eastern Europe.
According to the companies, the super green energy block project will increase Bulgaria’s installed energy storage capacity by around 15% and support higher integration of wind and solar power into the national grid. The facility uses CATL’s Tianheng energy storage system, which features 6 MWh-level lithium iron phosphate (LFP) battery technology designed to reduce land use and improve operational efficiency. CATL said the system can lower auxiliary power consumption and provide enhanced fire protection, insulation, and resistance to harsh environmental conditions.
Following the project’s commissioning, Solarpro Holding and CATL have also agreed to expand their energy storage cooperation over the next 2 years.
The South Australian government has awarded contracts for 6 large-scale BESS projects under its Firm Energy Reliability Mechanism (FERM) that will more than double the state’s battery storage capacity from 1.1 GW to 2.5 GW. The selected projects will deliver a combined 517 MW/4,136 MWh of dispatchable energy storage and are expected to support around AUD 2.2 billion in private investment.
The batteries will be capable of supplying electricity continuously for up to 8 hours, helping improve grid reliability during periods of high demand and low renewable generation. The projects include developments by Akaysha Energy (250 MW/1,000 MWh Brinkworth), Neoen Australia (200 MW/800 MWh each for Goyder Battery Stage I and 2); AMPYR Australia (270 MW/1,080 MWh Northern Battery); Iberdrola Australia (270 MW/1,080 MWh Tungkillo); and ZEBRE Pty Ltd (144 MW/576 MWh Dartmoor).
The first stage of capacity is scheduled to come online by November 2028, with the remaining capacity targeted for completion by November 2029. The initiative is designed to strengthen South Australia’s energy resilience and reduce exposure to short-term electricity price spikes during extreme weather events, stated the government.
US-based Volt Harbor has secured $2 million in seed funding, led by MFV Partners, to scale the commercialization of its patented MAC-BESS energy storage platform. The modular system combines battery storage, advanced power electronics, and onboard computing into a single software-defined architecture. Volt says this is designed for data centers, utilities, and commercial applications.
The platform supports both new and second-life EV batteries from different manufacturers and chemistries, enabling real-time coordination of power flow. Volt Harbor said the technology can reduce costs for utility and industrial storage projects while extending battery life and supporting the reuse of retired EV batteries. The company is also deploying a MAC-BESS system with DTE Energy to support high-power EV charging, demand response, and backup power applications.
Goshe Energy Storage has secured a strategic holdco debt facility of up to $40 million from S2G Investments to accelerate the acquisition and construction of utility-scale battery energy storage projects across the US. The announcement comes as Goshe’s first 100 MW battery storage asset in the Electric Reliability Council of Texas (ERCOT) market became fully operational.
The company said it closed $288 million in project-level financing for the initial 100 MW, contributing to more than $460 million raised to date for its initial portfolio. Goshe said its 2nd asset a 180 MW project is nearing completion and expected to enter operation in the coming months, while 2 additional projects are planned to begin construction later this year. The company focuses on acquiring late-stage storage projects and managing them through financing, construction, and operations to support grid reliability and renewable energy integration.
