EV
Acumulador de Carga Rápida (ACR) is an electric tram system powered by onboard supercapacitors marketed by Spanish manufacturer Construcciones y Auxiliar de Ferrocarriles (CAF). Trams equipped with ACR are fast-charged while at stops; elsewhere they require no overhead line, which is desirable for reasons of safety, reliability, cost, and aesthetics. It also allows regenerative braking where direct current electrification systems cannot return (much) energy to the grid.
Acumulador de Carga Rápida (ACR) is an electric tram system powered by onboard supercapacitors marketed by Spanish manufacturer Construcciones y Auxiliar de Ferrocarriles (CAF). Trams equipped with ACR are fast-charged while at stops; elsewhere they require no overhead line, which is desirable for reasons of safety, reliability, cost, and aesthetics. It also allows regenerative braking where direct current electrification systems cannot return (much) energy to the grid.