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Bulgaria seeks to revive 864 MW Chaira pumped-storage hydropower plant
Supported by Toshiba, Bulgarian utility NEK is working to restart its 864 MW Chaira pumped-storage hydropower plant, the largest of its kind in Southeastern Europe. The facility has been offline since March 2022 following a turbine failure.
Brazil can reach 7 GW in storage by 2035
Projections from the Energy Research Company (EPE), shared during the Absolar Storage Leaders event, depend on a stable legal framework and regulatory progress. Authorities and stakeholders in the electricity sector highlight the role of batteries in reducing costs, ensuring energy security, and expanding renewable energy.
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German battery first to integrate monitoring, analytics and trading, moving away from fragmented digital tools
Obton Dynamic, Amperecloud, Volytica Diagnostics and Enspired are trialling a coordinated approach to storage operation on a 32 MWh battery storage project in Tangermünde, south-east Germany. Their goal is to pilot a best practice in asset management and competitiveness in Europe’s fast-moving storage markets.
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“It’s a miracle we have any storage projects in Germany at all”
Interview: Germany’s Federal Network Agency (Bundesnetzagentur or BNetzA) recently published an FAQ on grid connections for large-scale battery storage. It says that big battery systems require two separate procedures — one for charging (grid draw) and one for discharging (grid feed-in). Attorney Britta Wißmann from Watson Farley & Williams explains what this means for ongoing projects and existing grid connection approvals.
German network operators approve grid connection of 46 GWh of storage at medium voltage level
Last year, German network operators received 9,710 connection requests for battery storage systems planned for commissioning at the medium-voltage level. These requests correspond to a total of 400 GW/661 GWh. At the transmission network level, large-scale battery storage projects with a combined capacity of 51 GW have already been approved for development in the coming years.
Nov 12, 2025
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