The Wright Electrocity is a type of hybrid bus built by Wrightbus. There were originally two prototypes, one based on Dennis Dart SLF chassis and the other based on DAF SB120 chassis. It was the first bus of its kind and later competed with the Alexander Dennis Enviro200H and the Optare Tempo. Another five Electrocity buses were built for use on route 129 (operated by Abellio), and entered service in 2009. Although TfL intends to introduce significantly more hybrid buses into service, no Electocitys are currently on order.