First Gas is owned by a shell company called First Gas Holdings Ltd which itself is owned by another shell company, First Gas Midco Ltd which is owned by First Gas Topco Ltd, owned by Australian and Canadian investment funds.
59.16% - Butterfield Trust (Cayman) Limited
- this seems to be owned by First State Investments in an unlisted infrastructure fund.
24.14% - Colonial First State Managed Infrastructure Limited - Australia
13.90% - Caledon FGL Aggregator, L.P. - Canada
2.80% - Manitoba Public Insurance Corporation - Canada
See also this Energy Stream article, First Gas own Vector's old non Auckland gas assets, the Maui pipeline and other North Island gas assets. They are also buying the Ahuroa gas storage facility off Contact. At least $NZ1.75 billion in assets including the Contact purchases.
Would be nice if they were listed on the NZX.