Sefydlwyd CSCC yn 2018 fel corff anstatudol i gynghori a gwneud argymhellion i Weinidogion Cymru ar anghenion seilwaith economaidd ac amgylcheddol Cymru  dros y 5–30 mlynedd nesaf.
The NICW was established in 2018 as a non-statutory body to advise and make recommendations to Welsh Ministers on Wales’ economic and environmental infrastructure needs over the next five to thirty years.