The Benefits of Adding Battery Storage to an Existing Solar PV System

In recent years, the popularity of solar photovoltaic (PV) systems has soared due to their ability to generate clean and renewable energy. However, the integration of battery storage with solar PV systems has emerged as a game-changer in the renewable energy landscape. Adding battery storage to an existing solar PV system offers several advantages that enhance the efficiency, reliability, and sustainability of the entire system.

Maximizing Energy Efficiency

One of the key advantages of adding battery storage to a solar PV system is the ability to maximise energy efficiency. During the daytime, when the sun is shining brightly, excess energy generated by the solar panels can be stored in the batteries instead of being fed back to the grid. This stored energy can be utilised during evening hours or when the sun isn’t shining, reducing reliance on the national grid, and optimising self-consumption. By harnessing and storing more of the generated energy, homeowners can significantly reduce their electricity bills and improve the overall efficiency of their system.

Battery storage provides homeowners with energy independence and enhanced resilience against power outages. In a traditional solar PV system without batteries, excess energy is typically sent back to the grid, and homeowners rely on the grid during periods of low solar generation. With battery storage, however, homeowners can store surplus energy for use during night-time or grid outages. This not only ensures a continuous power supply but also safeguards against rising energy costs and potential disruptions in the grid.

Load Shifting and Time-of-Use Optimization:

Battery storage enables load shifting, which refers to the ability to store energy during off-peak hours when electricity rates are lower and utilise it during peak demand periods when rates are higher. By intelligently managing the flow of energy, homeowners can take advantage of time-of-use tariffs, optimising their energy consumption patterns. This flexibility is particularly advantageous in regions with dynamic pricing structures or where electricity demand charges apply.

Smoothing Power Output and Voltage Stability:

Solar PV systems without battery storage often experience fluctuations in power output due to varying weather conditions. By integrating battery storage, these fluctuations can be mitigated, resulting in smoother and more stable power output. Batteries act as a buffer, absorbing excess energy during periods of high generation and releasing stored energy during low generation. This improves the overall performance of the solar PV system, reduces stress on electrical components, and enhances the longevity of the system.

Environmental Benefits

The addition of battery storage to a solar PV system contributes to the broader transition towards a sustainable future. By maximising self-consumption and reducing reliance on the grid, battery storage reduces the overall carbon footprint associated with electricity consumption. It promotes the efficient use of renewable energy, lowers greenhouse gas emissions, and helps combat climate change. Additionally, when combined with an existing solar PV system, battery storage allows homeowners to further reduce their dependence on fossil fuels and make a positive impact on the environment.

Let MJ Wallace Help

The benefits of integrating battery storage into an existing solar PV system are undeniable. If you have already installed a solar PV system, considering the addition of battery storage can provide you with greater control over your energy usage, increased savings, and a sustainable energy solution for the future. Embrace the power of battery storage and take your solar PV system to new heights of efficiency and sustainability.

If you’re considering battery storage for your existing solar PV system, or are just interested in finding out more about using solar energy for your home or business, don’t hesitate to get in touch with us at MJ Wallace. We have a team of experts available to talk you through the options that would best suit your home or business.

Feel free to contact MJ Wallace at any time to request more information about the business and the services we have to offer. You can reach us by phone on 0800 046 6020, email at or for an instant quote, click here.