The electricity industry is large, complex and technical. Here you can learn about how different parts of the sector operate and interact to bring electricity to you across New Zealand.
How the electricity industry works
Supplying power to homes and businesses across New Zealand involves three key elements: generating electricity, transporting electricity to distribution companies, and then selling it to customers.
New Zealand's system operator is Transpower. They are contracted to co-ordinate electricity supply and demand to make sure the lights stay on at the lowest possible cost.
So, how does it work? Simply put, the power produced from five big generators goes into the national grid at 52 points across New Zealand. It's transmitted through high voltage power lines and is then distributed through network companies. Retailers then sell that electricity to residential and business customers.
Learn about how different parts of New Zealand's electricity sector operate, our responsibilities as the regulator and industry participants' obligations.
Electricity is bought and sold on the wholesale or spot market.
We work to ensure the wholesale market is efficient, reliable and competitive by developing the policy, systems and rules for the buying and selling of wholesale electricity.
Distribution companies provide and maintain the power lines that carry electricity from the grid to your home or business.
We oversee distributors' interactions with other industry participants and the parts of their operation that have obligations under the Code.
Electricity is transported across New Zealand through the grid to local substations and then to homes and businesses.
We determine transmission pricing policy and grid reliability standards.
Retailers sell electricity to residential and business customers.
We oversee the retailer processes that deal with accuracy of metering, meter reading and customer switching. We also work to minimise the barriers to entry for new retailers.
Tools and resources for industry
Use these tools to register and operate as an industry participant, manage your compliance and access data and financial resources.
A register of all participants in New Zealand's electricity industry. Use this register to apply to become an industry participant and for a participant identifier.
For industry participants to manage reconciliation, invoicing and consumer switching processes. It holds information on all the installation connection points in New Zealand.
Finds all of the information on home and business connections on the electricity network.
Use this portal to report an alleged breach, view breach reports and decisions.
Information provision platform
Use this application to view and respond to information and data requests from the Electricity Authority
Electricity regulation is complex and technical. Find industry-specific best practice guidance here.
Developing a new product or service? Learn how to access connection, consumption and tariff data.
Operating the market
We contract a range of market operation service providers to operate the electricity markets efficiently. We focus on creating fit-for-purpose market services that increase market efficiency, ensure effective market operation and facilitate market development.