A relevant joint venture is formed for the purpose of carrying out a utility activity and is committed to doing so for a period of at least 3 years.
Caiff cyd-fenter berthnasol ei ffurfio at ddibenion cyflawni gweithgaredd cyfleustod ac mae'n ymrwymedig i wneud hynny am gyfnod o dair blynedd o leiaf.