This presentation describes the study conducted to decarbonise domestic gas networks by replacing natural gas with hydrogen to reduce emissions from industrial natural gas networks. This is achievable by creating a blended stream within the existing gas network. Also, this paper includes a clear overview of an alternative scenario of constructing a dedicated hydrogen pipeline option delivering pure hydrogen directly to end users in order to blend hydrogen at their specific sites as one of the pathways for the Energy Transition within Saudi Aramco. The addition of hydrogen decreases the carbon content, resulting in reduced carbon dioxide emissions when used as a combustion fuel at the end user's facility.