How battery storage works
Battery systems work in two ways
Soaking up excess electricity generated by solar panels. The stored energy can then be used later in the day or during peak times when grid electricity is more expensive.
Charge up using off-peak tariffs. Utility companies charge variable rates for electricity; cheaper during the night when demand is low, and more expensive during the day and evening when demand increases. A battery allows you to purchase and store cheap electricity to use during high cost periods.
When paired with renewable technologies such as solar PV, air source, or ground source heat pumps, battery systems help you use clean energy more effectively, lowering both your bills and carbon footprint.
Benefits of battery storage
Maximise your solar PV
Store excess solar energy generated during the day and use it later in the evening when demand (and prices) are higher.
Reduce energy costs
Charge your battery when electricity is cheapest and use it when it’s most expensive.
Cut carbon emissions
Using more of your own clean, locally produced energy means less dependence on fossil fuels.
Gain backup power
With the right setup, battery systems can provide backup during power cuts — keeping essential circuits running.
Better Planet’s integrated approach
At Better Planet, we design and install complete renewable systems, not just individual components. Our engineers ensure your battery storage, solar PV, heat pumps, and controls work seamlessly together. This whole-system approach delivers better performance, simpler maintenance, and long-term savings.
We’re accredited under ISO 9001:2015 and certified with MCS, ensuring all installations meet the highest standards of quality and compliance.
- Do I need solar PV to benefit from battery storage?
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No. While battery storage works brilliantly with solar PV, it can also charge from the grid allowing you to take advantage of cheaper off-peak tariffs.
- How long do batteries last?
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Most modern lithium-ion batteries last between 10 and 15 years, depending on usage and manufacturer.
- Can battery systems power my building during a power cut?
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Some battery systems can provide limited backup during outages, but this requires a specific type of inverter and configuration. We can design this into your system if it’s important to you.
- How big are batteries?
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Typical domestic batteries are about the size of a small suitcase or wall-mounted cabinet and can be installed indoors or outdoors. Commercial batteries can be the size of shipping containers!
- What size battery do I need?
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That depends on your energy use and the capacity of your solar system. Our team will assess your property and design a system that fits your needs.
