German-Norwegian power storage systems provider Eco Stor GmbH has signed a marketing agreement with demand response provider Entelios AG and power asset optimiser Enspired GmbH for <a href="https://renewablesnow.com/news/eco-stor-breaks-ground-on-238-mwh-battery-project-in-germany-855555/" target="_blank">a 103.5-MW/238.5-MWh energy storage facility</a>, which is currently under construction in Bollingstedt, Germany.