Meet Tallinn Energy Storage Lithium Battery Company —the silent powerhouse behind Europe's green transition. Did you know their batteries can outlast an Estonian winter (-20°C, anyone?) while storing solar energy like a squirrel hoarding nuts? Now that's a flex. While others stick to basic. Diotech OÜ and Transcom AS will commence construction in February 2026 of a 100 MW / 200 MWh battery energy storage system (BESS) facility in Tsirguliina, Valga County. Project Zirgu represents the largest 100% Estonian capital-based battery industrial park, designed to help balance the Estonian. Hertz 1, with its significant storage capacity of 200 MWh, is the first of two strategic projects (Hertz 1 and Hertz 2 are 100MW/200MWh each) designed to stabilize the regional power system following the Baltics' synchronization with the European continental grid. When it comes to energy, compact Estonia thinks big. The country, aiming for a full-fledged green transition, is building unique infrastructure to bring this moment closer. The JV between Estonian energy company Evecon, French solar PV developer Corsica Sole, and asset manager Mirova will develop the 2-hour duration systems, with. Over the past few days, Estonia has welcomed its largest heat storage facility to date and seen construction begin on its largest solar-plus-storage hybrid project.