Some UK electricity suppliers offer tariffs where electricity prices vary depending on the time of day. These are commonly referred to as smart tariffs or time-of-use tariffs.
In some cases, electricity prices may be lower during periods of reduced demand, such as overnight hours. Some homeowners explore battery storage systems as a way to charge stored energy during these lower-priced periods for use later in the day.
Tariff structures, pricing and eligibility vary between suppliers and may change over time.
A home battery storage system is designed to store electricity for later use within the property.
Depending on the system configuration and energy tariff available, some battery systems may be capable of charging during lower-cost periods and supplying stored electricity back to the home when electricity prices are higher.
Potential benefits may include:
Actual performance and financial outcomes will depend on energy usage, tariff structure, property setup, battery size and other factors.
Battery storage systems are commonly associated with solar panels, however some systems may also be used independently of solar generation depending on the equipment installed and the energy tariff selected.
Some homeowners explore battery-only systems to make use of time-of-use electricity pricing, while others use batteries to store excess solar energy generated during the day.
The suitability of any setup depends on individual property requirements, energy usage patterns and available tariffs.
Every property and household uses electricity differently, which means potential outcomes can vary significantly.
Potential influencing factors may include:
Time-of-use tariffs are designed around changing electricity demand throughout the day.
In general terms:
Battery storage systems may allow households to make greater use of electricity purchased during lower-demand periods, subject to system compatibility and tariff availability.
Before investing in a battery storage system, homeowners may wish to consider:
Professional assessment is recommended before purchasing any energy system.
