Based in New Plymouth, Firstgas Group is an umbrella brand consisting of Rockgas, Firstgas, Flexgas and Gas Services NZ. Firstgas and Rockgas are consumer brands that supply LPG and natural gas to more than 165,000 customers through their gas network of more than 2,500 km of high-pressure transmission pipeline and 4,800 km of distribution pipeline in the North Island, 36 local LPG suppliers, and more than 180 ‘Refill and Save’ locations across New Zealand.

Flexgas and Gas Services NZ are energy storage, operations and maintenance brands who make sure gas can be delivered safely and continuously. Flexgas operate the Ahuroa gas storage facility in central Taranaki. Gas Services NZ provides operational and maintenance support to all gas infrastructure owners, including the brands within Firstgas Group.

As well as running its own networks, it also supplies expert services to other pipeline owners in Australia and New Zealand through its specialist services team.