The £55 million (US$69 million) Scottish Government investment in the line between Haymarket and Dalmeny will see the railway transformed to accommodate quieter, more environmentally friendly electric trains.
The first phase of work between Haymarket and Dalmeny will see Network Rail pile the foundations for masts that will carry overhead wires up to the Forth Bridge. In total it will see 25 single track kilometres (STK) of railway electrified by December 2024.
Subsequent phases of work will see partial electrification of lines in Fife - totalling a further 104STK, to enable the introduction of battery electric multiple units to replace life-expired diesel units which will be phased out.
The contractor, Scottish Powerlines, will shortly begin on-site activities between Haymarket and Dalmeny - including piling and constructing steelwork foundations to support overhead power masts.
Electrification from Edinburgh into Fife represents the next phase of the rolling programme of electrification and part of the wider programme of decarbonisation which will build a cleaner, greener Scotland's Railway.