In a 9-megawatt energy storage project, six flywheels have been installed in combination with a large battery to create an innovative hybrid storage system in Heerhugowaard, around 35 kilometers from Amsterdam. . S4 Energy, a Netherlands-based energy storage specialist, is using ABB regenerative drives and process performance motors to power its KINEXT energy-storage flywheels, developed to stabilize Europe's electricity grids. Switzerland-headquartered battery and storage system provider Leclanché emailed. . S4 Energy and ABB recently installed a hybrid battery-flywheel storage facility in the Netherlands. QuinteQ developed a containerized flywheel energy storage system (Figure 1) that reduces peak power demand. . • ABB motors and converters help S4 Energy's flywheels improve energy storage and release efficiency at a power plant in the Netherlands • Innovative hybrid systems combine large battery storage systems with flywheels to keep the grid frequency stable S4 Energy, based in the Netherlands, is a deep. . YVERDON-LES-BAINS, Switzerland and ROTTERDAM, Netherlands, August 31st, 2020 – Leclanché SA (SIX: LECN), one of the world's leading energy storage companies, has together with S4 Energy completed and handed over an innovative hybrid energy storage project for energy management provider S4 Ancillary. .