Yr wythnos hon, mae aelodau'r pwyllgorau cynllunio yng Nghyngor Bwrdeistref Sirol Castell-nedd Port Talbot a Chyngor Sir Powys wedi rhoi sêl bendith terfynol i'r prosiect.
Members of the planning committees at Neath Port Talbot County Borough Council and Powys County Council have this week given the project the final go-ahead.