What is Grid Peak Demand?
Grid peak demand refers to the times when electricity use is at it’s highest – typically when many homes and businesses are using appliances, lights and air-conditioners at once. These peaks can strain the power grid and in extreme cases – lead to blackouts.
In Western Australia, peak demand typically occurs in summer (between 5pm and 8pm) on the hottest days. As people return home, the widespread use of air conditioners, TVs, lights and other appliances drives up electricity use, putting pressure on the grid.
How Peak Demand Changes with the Seasons
Electricity demand in WA varies not just daily but throughout the year, largely driven by the weather. Hot afternoons see a spike in air-con use, whilst cold mornings increase demand for heating as people start their day.
Energy Prices & Peak Demand
The Australian Energy Market Operation (AEMO) ensures WA’s grid can meet electricity demand at all times. A key part of this is tracking seasonal “peak events” – the four highest demand days (in 30 minute intervals) from December until March.
This data guides future investment in power generation and influences electricity costs for businesses through capacity charges, which may be included in pricing or itemised on bills.
The Inside Scoop with Change Energy
If you’re a Change Energy customer enrolled in our Summer Demand Management Program, you’re in a great position to save. When a peak event is forecast, we’ll alert you so you can reduce your energy use and cut costs – potentially saving up to 30% on your bill. This service is just one of the ways we help businesses run more efficiently.