Mae Llywodraeth Cymru wedi bod yn gweithio mewn partneriaeth â Chyngor Bwrdeistref Sirol Castell-nedd Port Talbot a Chyngor Sir Powys i ddatblygu cynigion ar gyfer y GCRE. Sefydlwyd menter ar y cyd yn 2019 rhwng Llywodraeth Cymru a chynghorau Powys a Chastell-nedd Port Talbot i gefnogi'r gwaith o ddatblygu a chyflawni prosiectau. Mae'r cynigion yn deillio o gydweithio â phartneriaid ac ymgysylltu ac ymgynghori helaeth â rhanddeiliaid a chymunedau lleol.
The Welsh Government has been working in partnership with Neath Port Talbot County Borough Council and Powys County Council to develop proposals for the GCRE. A joint venture was established in 2019 between Welsh Government and both Powys and Neath Port Talbot councils to support project development and delivery. The proposals are the result of collaborative working with partners and extensive engagement and consultation with stakeholders and local communities.