Electronic ticketing will be in place across all 190 stations of the Sydney train network by the end of next week.

Passengers travelling from Green Square to Macarthur, Erskineville to Liverpool and Lidcombe, Sydenham to Waterfall and Cronulla will be able to travel using an Opal card by March 28.

The Opal card system will be available across the entire Sydney train network by the end of next week. Credit:Dallas Kilponen

The implementation will also be fast-tracked to include another 52 stations on the South Coast Line to Wollongong, Port Kembla and Bomaderry, as well as the Southern Highlands Line to Goulburn from April 4.

NSW Transport Minister Gladys Berejiklian said the Opal was a "game-changer" for public transport users, 130,000 of whom had already registered for the system.