An overview of the transmission and distribution network of New
Distribution networks transport power to consumers through a network of overhead wires and underground cables (generically referred to as lines). In total, there are over 150,000 km of
Distribution
As electricity travels through power lines, a proportion of energy is lost as heat, due to the resistance in the lines. Distributors need to adopt a methodology to determine and allocate losses arising on their
National Grid (New Zealand)
Generation and load centres are shown as blue and red circles respectively. The major AC transmission corridors are shown as black lines, with the HVDC Inter-Island as a dashed line. The National Grid is
Load by operational zone
The New Zealand power system is split into 14 operational zones. The graphic on this page displays loads in each operational zone, as taken from the System Operator''s SCADA system.
Network Connection Standard
Overall, this standard outlines how we accommodate and manage electrical loads on our network. It starts by explaining the connection process, then covers the design and construction of our network
Network capacity maps
Demand capacity map: This map highlights the approximate capacity available on Powerco''s high-voltage (HV) network, helping commercial and industrial customers determine the feasibility of
Network Connection Standard
For all new connections, where a capacity of over 160 Amps is requested, Counties Power will need to assess network requirements for accommodating additional load.
Installation Connection Standard
Contract Supply Capacity - Means the maximum load in kVA the connection is designed to deliver.
WEL Networks Limited
WEL Networks has a load control system to enable it to manage its load to optimise the utilisation of the distribution system and for tariff purposes. Load control will be carried out by the WEL load control
The Electric Power System
The EMI website is the Electricity Authority''s avenue for publishing data, market performance metrics, and analytical tools to facilitate effective decision-making within the New Zealand electricity industry
Electricity statistics
On this page you can find the data tables for electricity generation and demand in New Zealand.
Overhead Line Design Standard
The selection of load factors (particularly for weather related loads) and component strength is based on an acceptable risk of failure for the loading condition being considered.
Micro-Modular & Edge DC
Prefabricated micro-modular data centers and edge pods, scalable from 5 to 50 racks, ready for 5G and edge AI workloads.
Immersion & Liquid Cooling
Single-phase immersion cooling tanks and direct-to-chip liquid cooling switches, achieving PUE below 1.1.
AI Servers & Racks
GPU-accelerated AI servers, high-density server racks, and network cabinets optimized for AI/ML workloads.
DCIM/EMS & Cable Bridge
Real-time data center infrastructure management, plus overhead cable trays and fiber bridges for structured cabling.