LEC Construction International GmbH is currently implementing one of the most significant energy infrastructure projects in Latvia – the construction of a Battery Energy Storage System (BESS) at the Rēzekne substation. This project is being carried out in cooperation with Rolls-Royce Solutions GmbH and the client AS Augstsprieguma tīkls (AST), and is part of the Baltic States’ electricity transmission system synchronization with Continental Europe.
This project will be the largest of the three BESS projects currently being implemented in Latvia and, upon completion, will become the largest battery park in the country to date. The project includes the installation of battery energy storage systems with a total capacity of 80 MW and energy storage of 160 MWh within Latvia’s electricity transmission network. At the Rēzekne substation, a part of the overall system is to be built with a capacity of 60 MW and an energy capacity of 120 MWh. The battery systems use lithium iron phosphate (LFP) technology, ensuring high safety and reliability.
The project is being implemented in accordance with the Yellow FIDIC Book principles, meaning that LEC GmbHassumes full responsibility for both design and construction, based on the technical brief and specifications issued by AST, as well as Latvian building codes and other applicable regulations. We manage the entire development and implementation cycle – from full design development, material supply and installation, to comprehensive earthworks, foundation construction, control building construction with full control infrastructure, cabling works, and installation of noise barriers. At the end of the project, full commissioning of the system will be carried out.
On June 12, an official event took place at the site, attended by the Minister for Climate and Energy, Kaspars Melnis, the Chairman of the Management Board of AS Augstsprieguma tīkls, Rolands Irklis, representatives of Rolls-Royce Power Systems AG, as well as scientists from Riga Technical University. The event marked the final phase of the project – construction works are nearing completion and equipment testing has begun. As early as this autumn, the battery systems will be used to ensure electricity balancing capacity and provide a more stable power supply in Latvia.
