The Traws Cymru T1 Services (Aberystwyth to Carmarthen) has also received investment to convert the eight vehicles and depot facilities to battery electric operation.
Mae Gwasanaethau T1 Traws Cymru (Aberystwyth i Gaerfyrddin), hefyd wedi derbyn buddsoddiad i newid yr wyth cerbyd a'r cyfleusterau depo i weithredu ar drydan batri.