“…As with the OESS the WESD can be equipped with a wide range of storage technologies (batteries, supercapacitors, flywheels, hydrogen) with the advantage that there are fewer space constraints to locate the WESD. There are different WESD manufacturers including Siemens (Sitras Static Energy Storage) implemented in Germany (Dresden, Cologne, Koln and Bochum), China (Beijing) and Spain (Madrid); Bombardier (EnerGstor) installed in Kingston (ON, Canada); ABB (Enviline) installed in Warsaw (Poland) and Hong Kong [25][26][27][28][29][30]. In [29] Ghaviha, Campillo, Bohlin and Dahlquist reviewed the use of WESD in light transport and concluded that some WESD can achieve 30% energy savings.…”