Cafodd NICW ei sefydlu yn 2018 fel corff anstatudol i roi cyngor a gwneud argymhellion i Weinidogion Cymru ar y seilwaith economaidd ac amgylcheddol sydd ei angen dros y pum i dri deg 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.