Yn gam nodedig eraill, mae bargen opsiwn tir wedi’i chwblhau ar gyfer safleoedd gwaith glo brig Nant Helen a golchfa’r Onllwyn, sy’n golygu bod Celtic Energy yn rhoi’r holl dir sydd ei angen ar gyfer y prosiect. Caiff cais cynllunio ffurfiol ei gyflwyno’r wythnos hon ar gyfer adeiladu’r ganolfan fodern a phwrpasol ar gyfer profi a dilysu  seilwaith, systemau a cherbydau rheilffyrdd. Bydd y Ganolfan yn sbarduno arloesi, buddsoddi a thwf yn y diwydiant trenau yng Nghymru, yn y Deyrnas Unedig a’r byd.
In further milestone developments, a land option deal has been completed for the sites at the Nant Helen surface mine and Onllwyn coal washery, which will see Celtic Energy gift all the land necessary for the project. A formal planning application will also be submitted this week for a purpose-built, modern railway infrastructure, systems and rolling stock test and validation complex. The facility will act as a driver for accelerated rail industry innovation, investment and growth in Wales, the wider United Kingdom and internationally.