Our network experiences peak demand when electricity use is at its highest. For example, peaks often occur on hot days when air-conditioners are being used.
One way we manage demand is by upgrading the network. This helps to increase the overall capacity of our network. Upgrades also ensure a safe and reliable power supply during peak times.
We’re exploring different options to help reduce demand during peak times. Some of these include demand management technologies that help network efficiency.
The diagram below shows demand strategies used throughout the network.
Embedded generators are large systems installed close to substations to meet excess load requirements. They help during times of peak demand. These systems are often gas engines with a maximum capacity of between 5 and 10 megawatts.
For more information, please read the Embedded Generation case study.
Please visit our page on Embedded Generation Connections above 5MW for connections of this type.
Mobile generators are a flexible resource that help to reduce stress caused by overloading network assets. Mobile generators can be deployed to minimise the impact on communities of extended outages due to asset damage. These systems are often diesel engines with capacity of approximately 1 to 2 megawatts.
To help reduce the risk of overloading network assets before and during peak demand periods, we work closely with commercial and industrial customers to reduce or shift activities to outside of these periods.
We encourage you to reduce your energy usage during peak periods, for your benefit and ours.
Smart home appliances of the future will offer more options to manage peak demand.
For more information, please read our Commercial and Industrial Customer Demand Response case study.
Energy storage systems, like big batteries, help our network by storing electricity. The stored energy is used during times of peak demand.
For more information about energy storage, please read our case studies on the following topics:
Business customers, who use more than 160 MWh per year, can reduce their electricity bill limiting their electricity use on peak days with our GoodGrid CPD program.
For more information about these strategies, please visit our Critical Peak Demand Tariffs page.