The service life of an electricity storage system in photovoltaic systems: important tips for long utilisation
Updated on 10.04.2025
The service life of an electricity storage system in photovoltaic systems: Important tips for long utilisation.
If you are investing in a photovoltaic system (PV system), then you are certainly also thinking about the longevity of the entire system - and this is where the electricity storage system plays a decisive role. The service life of an electricity storage system for a solar power system varies depending on the model and use, but is generally between 10 and 15 years. To maximise this lifespan and ensure the performance of your PV system in the long term, you should consider a few important factors.
In this article, you will learn how you can extend the service life of your electricity storage system and what you should consider when selecting and maintaining it.
1. Optimum integration of the electricity storage system into the PV system
For your electricity storage system to function optimally, it must be correctly integrated into your photovoltaic system. Incorrect integration can lead to overcharging or deep discharging, which shortens the service life of the storage system. Make sure that the storage system works well with the inverter and the solar modules to ensure efficient utilisation of the stored electricity. Professional installation is essential here.
2. Temperature management for a longer service life
Temperature has a major influence on the performance and durability of batteries. Ideally, the storage system should be installed in a well-ventilated, temperate area - away from direct sunlight and extreme temperatures. A location that protects both the solar modules and the storage system from extreme weather conditions helps to significantly extend the battery's service life.
3. The correct state of charge of the storage system
For the longevity of your electricity storage system, it is important to keep the state of charge in the optimum range. A battery should neither be charged to 100 % nor completely discharged. A state of charge of around 30 % to 80 % is considered ideal. This reduces the stress on the battery and thus contributes to a longer service life.
4. Depth of discharge (DoD): Why less is more
The Depth of Discharge (DoD) describes how much the battery is discharged before it is recharged. A lower depth of discharge significantly increases the service life of the storage system. Make sure that you do not regularly discharge the storage system completely, but only use it within a moderate range.
5. Maintenance and regular checks
Regular maintenance is a must to ensure the long-term performance of the storage system and the entire PV system. Regularly check the state of charge of the battery, clean the battery cells and ensure that all connections are working properly. An annual inspection by a specialist helps to recognise potential problems at an early stage.
6. Software updates for greater efficiency
Many modern storage batteries have intelligent software that optimises the charging and discharging cycles. Make sure you update the software regularly. Software updates can increase the efficiency of the system and thus indirectly extend the service life of the battery.
7. Factors that influence the service life of electricity storage systems
The service life of an electricity storage system depends on various factors:
- Type of electricity storage system: Lithium-ion batteries, which are often used in modern PV systems, can achieve a service life of up to 20 years. Lead-acid batteries, on the other hand, generally only last 10 to 15 years.
- Frequency of use: Storage systems that are used regularly tend to have a longer service life than those that are rarely used. Regular use ensures even utilisation and prevents the battery from ‘rusting’.
- Care: Regular maintenance is the key to maximising service life. This includes checking the state of charge and cleaning the battery cells.
Conclusion:
A long-term investment in your solar power supply
A well-chosen and well-maintained electricity storage system is a long-term investment that will help you to reduce your energy costs and protect the environment at the same time. If you select a suitable storage system for your PV system and maintain it regularly, you can significantly extend the service life of your system and thus reap the full benefits of your solar system. Would you like to find out more about electricity storage systems for your PV system or do you need support with selection and installation? Contact us - our team of experts is here to help
Why invest in photovoltaics with greenmondi?
As experts in sustainable energy solutions, we offer you customised PV systems that are precisely tailored to your needs and circumstances. We work with high-quality solar modules that offer maximum efficiency and ensure professional installation and maintenance. This ensures that you get the most out of your photovoltaic system and benefit from a reliable, clean and cost-effective energy source for years to come.
Contact us today to find out more about the efficiency of PV systems and the various options for generating solar power. Together with greenmondi, you can take the step towards a sustainable and energy self-sufficient future!
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