There is no power at Strawberry Hill station this morning, leaving passengers without access the ticket machines.
The lack of power has closed the station's ticket office and the ticket vending machines are also not working.
There is no lighting at the station and the customer information system is out of order.
Transport for London (TfL) tweeted: "Strawberry Hill - Oyster card readers not working. Power issue. Auto refunds in process, if not received in seven days pls call 0843 2221234".
The problem has been caused by a local power failure.