Yes, many Transport for Wales (TfW) trains are equipped with power sockets and USB ports, but availability depends on the specific "Class" of train you are riding. In 2026, the newly introduced Class 197 and Class 231 fleets feature both standard three-pin UK plugs and USB-A/C charging ports at almost every seat in both Standard and First Class. However, on older "legacy" trains like the Class 150 or Class 158 (which still operate on some rural routes), you may find that power outlets are limited to the ends of the carriages or are only available in the First Class section. TfW has been undergoing a massive "Fleet Transformation" to ensure that the majority of their services offer modern amenities, including free Wi-Fi and digital information screens. If you are traveling on a long-haul route, such as from Cardiff to Holyhead or Manchester, your chances of having a dedicated plug are very high. For the most reliable experience, look for the newer "Cefn Gwlad" branded trains which were designed with the 2026 "connected traveler" in mind, featuring ergonomic tables and integrated charging points.