Generation
Contact Energy | Eastland Generation | Genesis Energy | King Country Energy | Mercury Energy | Meridian Energy | New Zealand Energy | Nova Energy | Top Energy
Electricity transmission
Transpower
Electricity distribution
North Island: Centralines | Counties Energy | Eastland Network | Electra | Horizon Energy Distribution | Northpower | PowerCo | Scanpower | The Lines Company | Top Energy | Unison Networks | Vector | Waipa Networks | WEL Networks | Wellington Electricity
South Island: Alpine Energy | Aurora Energy | Buller Electricity | EA Networks | Electricity Invercargill Limited | MainPower | Marlborough Lines | Nelson Electricity | Network Tasman | Network Waitaki | Orion Group | OtagoNet | The Power Company Limited | Westpower
Engery retailers
Contact Energy | Ecotricity | Electra Energy | Electric Kiwi | Energy Direct | Energy Online | Flick Energy Co | Genesis Energy | Giving Energy | GLOWBUG | King Country Energy | MegaEnergy | Mercury Energy | Meridian Energy | New Zealand Energy | Nova Energy | Opunake Hydro Ltd | P2power | Paua to People | Payless Energy | Powershop | Pulse Energy
Other
Eastland Group | Electronet | Horizon Energy Group | PowerNet
Defunct/Former
Trustpower
Notes
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