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An electro-diesel multiple unit (EDMU) or bi-mode multiple unit (BMU) is a form of a multiple unit that can be powered either by electric power picked up from the overhead lines or third rail (like an electric multiple unit – EMU) or by using an onboard diesel engine, driving an electric generator, which produces AC or DC electric power (like a diesel-electric multiple unit – DEMU).
List of BMUs
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NSW TrainLink Regional Train Project is building 117 bi-mode carriages (1.5 kV DC) to replace its diesel fleet of interstate and regional XPT, Xplorer and Endeavour trainsets to be delivered by CAF from 2023.
Bombardier has built dual-mode variants of its AGC series for the French operator SNCF; the electricity is collected by means of a pantograph.
- B 81500 – multiple unit trains using 1.5 kV DC catenary. In service since 2005.
- B 82500 – multiple unit trains using both 1.5 kV DC and 25 kV AC catenary. In service since October 2007.
- Alstom Règiolis (B 83500, B 84500, B 85000, B 85900). In service since April 2014 (B 83500 and B 84500).
- 14 bi-modal variants of the Stadler Flirt trains, called "Type 76" (Class 76) in Norway, held by the state owned Norske Tog and operated by the line operator SJ AB (as SJ Nord) entering service in 2021. 
- DT1 (ДТ1) Russian-gauge multiple unit. In service since 2009.
Electro-diesel multiple units whose electricity source is 25 kV 50 Hz AC overhead line include: