In December 2019, the remaining Aberthaw "B" power station was closed and was being decommissioned in 2020. Aberthaw signal box, being the only remaining example of its kind, is now devoid of all internal equipment and is a Grade II listed structure, but inaccessible to the public. It stands on the down platform of the demolished Aberthaw High Level station about 100m to the west of Station Terrace in East Aberthaw. Aberthaw Cement Works, a mile to the north is still rail-connected as at April 2020 and rail traffic to & from the works is controlled from a local, crew-controlled ground-frame which is interlocked with the SWCC Vale of Glamorgan Workstation remote signalling & points control.