James Albert Carmichael

NGC Holdings Limited operates as an energy infrastructure and service company with interests in natural gas and LPG processing, transportation, sales, and energy metering in New Zealand. The company operates in three divisions: Infrastructure, Energy Trading, and Others. Infrastructure division engages in the ownership and management of gas transmission lines, distribution networks, LPG infrastructure, and electricity and gas meters. Energy trading division engages in natural gas acquisition and processing, LPG and gas marketing, and residual electricity trading businesses. Others division includes corporate activities and investments. The company was founded in 1967 and is headquartered in Wellington, New Zealand

Entrust is a private trust, which engages in the protection and management of assets. It also holds investments in Vector Limited. The company was founded in 1993 and is headquartered in Auckland, New Zealand.

Founded in 2003, Vector Metering Data Services Ltd. is a subsidiary of Entrust (New Zealand) that provides meter data services. The private company is based in Newmarket, New Zealand.

Energy Trusts of New Zealand, Inc. is an organization for energy trusts that operate electricity distribution networks. The company is headquartered in Newmarket, New Zealand.

E-Co Products Group Ltd. sells and installs home ventilation system. The company is headquartered in Auckland, New Zealand.

Cristal Air International Ltd. sells and installs home ventilation system. It offers heatpumps, tablet heaters, whole home water filtration, windows, air filtration, air conditioning and upgrade products. The company was founded in 2003 and is headquartered in Auckland, New Zealand.

Part of Entrust (New Zealand), Advanced Metering Services Ltd. is a New Zealander company that provides metering services. The private company is based in Wellington, New Zealand. Advanced Metering Services was acquired by Vector Ltd. on January 29, 2010 for $1.06 million.