A home battery does more than store solar energy for your own use. It can also play an important role in supporting the wider electricity grid, particularly at times when demand is high.
Reducing peak demand When many homes draw electricity at the same time, the grid comes under pressure. A battery allows your home to rely on stored energy instead of pulling power from the grid during these peak periods. Across many homes, this significantly reduces strain on the network.
Reducing reliance on diesel generation During periods of high demand, especially in winter, the backup diesel generators at the power station may need to be switched on to help balance the system. Batteries reduce the amount of electricity required from these generators by supplying stored energy locally. This lowers fuel use and directly cuts carbon emissions.
Smoothing solar generation Solar energy rises and falls throughout the day. Batteries store excess solar when generation is high and release it later when demand increases. This smooths fluctuations and makes solar power easier for the grid to absorb.
Strengthening local resilience On island and local networks, grid balance is especially important. Batteries reduce sudden surges in import and export, easing pressure on cables, substations, and interconnectors.
The bigger picture By installing a battery, you’re not only improving your own energy independence and savings. You’re also helping build a more resilient, lower-carbon energy system for the whole community.
