In 1891, Brown had demonstrated long-distance power transmission, using three-phase AC, between a hydro-electric plant at Lauffen am Neckar and Frankfurt am Main West, a distance of 280 km.
Pada tahun 1891, Brown telah menunjukkan transmisi daya jarak jauh, menggunakan AC tiga fase, antara pembangkit listrik tenaga air di Lauffen am Neckar dan Frankfurt am Main Barat, sejauh 280 km.