German-Norwegian firm Eco Stor has revealed another 300MW/600MWh battery energy storage system (BESS) project in Germany, with construction planned for the end of 2024.
The BESS project is being developed in the town of Wittlich in Rhineland-Palatinate, adjacent to the Wengerohr substation within the network of transmission system operator (TSO) Amprion.
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The project is called ‘ECO POWER FOUR’, part of Eco Stor’s ‘ECO POWER’ series of large-scale BESS projects for which it is handling all parts of the project lifecycle and value chain with the exception of route-to-market, managing director Georg Gallmetzer told Energy-Storage.news.
This includes project development, BESS technology development, engineering, procurement and construction (EPC), the energy management system (EMS), financing (with partners), asset management and operation and maintenance (O&M). The project will require some €250 million (US$263 million) of investment.
It revealed ECO POWER THREE in July, an identically-sized system aimed for completion in 2025 at a site in Saxony-Anhalt, as reported by Energy-Storage.news at the time.
As with ECO POWER THREE, ECO POWER FOUR will comprise six of the company’ ECO STOR ES-50C block configurations each of which has an energy storage capacity of 50MW/100MWh. Each block also comprises a 110kV substation, 16 containers for the inverters and transformers, and 32 containers of lithium-ion batteries.
ECO POWER ONE is a 200MWh system in Bollingstedt which is also under development, and the company will reveal others step by step, Gallmetzer added.
Wittlich mayor Joachim Rodenkirch, commenting on the new project, said: “Climate change concerns us all. The city council has already adopted a comprehensive climate protection concept to prepare Wittlich for the future. The battery storage plant is an essential component in the overall concept of renewable energies.”
As Energy-Storage.news wrote in a feature article for Vol.32 of Solar Media’s quarterly journal PV Tech Power last year, for which Gallmetzer was interviewed, the German grid-scale energy storage market is entering a period of rapid growth.
This is being driven by increased opportunities in the wholesale energy market, as evidenced by 2-hour systems growing their advantage over 1-hour ones, as well as grants for co-located projects through the Innovation Tenders. The latest round awarded contracts, which provide an additional premium per kWh energy discharged, to over 400MW of solar-plus-storage projects.