These older cast iron mains are subject to water ingress during wet weather and as such, are the common cause of supply reliability issues.

The company is owned by the DUET Group, which was purchased in 2017, by Cheung Kong Infrastructure (CKI) for A$7.4 billion.

MGN is part of the commonly managed Australian Gas Infrastructure Group (AGIG) which is leading renewable gas projects across Australia with multiple renewable hydrogen projects in development, and the pilot study of HyP SA (live as of May 2021) successfully blending up to 5% renewable hydrogen into the gas supply of over 700 households in Mitchell Park, South Australia.

MGN has been undertaking hydrogen readiness studies to support the network in the transition to renewable gases including to update procedures, test existing pipeline welds, replace incompatible equipment in hazardous areas with higher rated equipment and further compatibility studies.

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