Editing Ground-level power supply (section)

{{Short description|System for powering electric vehicles}}
[[File:Sevilla-3-17 (48040370321).jpg|thumb|right|[[MetroCentro (Seville)|Seville Tram]] equipped with CAF ACR ground-level power supply, 2019]]
'''Ground-level power supply''', also known as '''surface current collection''' or, in French, '''''alimentation par le sol''''' ("feeding via the ground"), is a concept and group of technologies that enable [[electric vehicle]]s to collect electric power at ground level instead of the more common [[overhead line]]s. 

Ground-level power supply systems date to the beginning of [[Tram#Electric|electric tramways]]. Often they were implemented where the public expressed an aesthetic desire to avoid overhead lines. Some of the earliest systems used [[#Early systems|conduit current collection]]. Systems in the 21st century, such as [[#Alstom APS|Alstom APS]], [[#Ansaldo Tramwave|Ansaldo Tramwave]], [[#CAF ACR|CAF ACR]], and [[#Elways|Elways]], were developed to modern standards of safety and reliability, and added the ability to supply power to electric buses, trucks, and [[electric cars|cars]]. 

Some ground-level power supply systems use efficient, energy-dense capacitors and batteries to power portions of an electric transit system—for example, enabling buses and trains to charge their batteries during station stops.