Mae Datblygu Cynaliadwy yn agwedd allweddol ar y Rhaglen Lywodraethu. Ar 3 Rhagfyr 2012 cyhoeddodd Llywodraeth Cymru ail ymgynghoriad ar gynigion i ddeddfu ynghylch datblygu cynaliadwy yng Nghymru.
Sustainable Development is at the heart of the Programme for Government. On 3 December 2012 the Welsh Government issued a second consultation on proposals to legislate for sustainable development in Wales.