Rhaid i Lywodraeth y DU wneud mwy i gefnogi busnesau yng Nghymru sy'n wynebu costau ynni cynyddol uwch, mae Gweinidog yr Economi, Vaughan Gething wedi dweud.
The UK Government must do more to support businesses in Wales facing ever-increasing energy costs, Economy Minister Vaughan Gething has said.