Of the 33 stations on the South Coast line, just one has a machine that allows people to top up their Opal card.
The Opal website includes a list of the 86 stations across the state network that have Opal top-up machines on the platform.
The only South Coast station listed is Thirroul, leaving commuters to top-up online or at Opal stores throughout the Illawarra.
Keira MP and shadow Transport Minister Ryan Park was concerned this may place even more pressure on the Thirroul area, which is already dealing with an influx of commuters parking in the streets.
“I am extremely worried that given this is the only station with the ticketing infrastructure in place that we will see more people coming here and the local streets are jam packed,” Mr Park said.
A Transport for NSW spokesman said the government was in the process of rolling out almost 350 machines across the state.
“The second stage of the Opal top-up machines rollout is under way across transport locations including train further stations on the South Coast line,” the spokesman said.
“Details on the second stage of the Opal top-up machine rollout such as locations and the go live date will be announced in due course.”