Is Solar Battery Storage Worth It in 2025?

Written by Joe Sandham, Director. 

Solar panels are a fantastic way to save money and reduce your carbon footprint but pairing them with solar battery storage takes things to the next level. A solar battery allows you to store the electricity your panels generate during the day and use it later, at night, on cloudy days, or even during power outages. In some cases, you can also sell excess energy back to the grid. 

So, is solar battery storage worth it? Let’s dive into what it is, the benefits, costs, and how to choose the right size battery for your home. 

What Is Solar Battery Storage? 

A solar battery is a device that stores excess electricity generated by your solar panels. Without storage, that extra energy goes straight back to the grid. With a battery, you can keep it for later use, maximising your self-generated power and cutting your electricity bills. 

Solar battery storage systems include the battery, an inverter, and the software to manage charging and discharging. Together, they make your solar setup smarter, more efficient, and more valuable. 

 

 

Benefits of Solar Battery Storage 

1. Energy Independence & Security

Store solar energy during the day and use it when you need it most. You’ll rely less on the grid and have backup power during blackouts. 

2. Lower Electricity Bills

Use stored energy in the evenings when tariffs are high. Some households save hundreds of pounds per year by shifting usage. 

3. Maximise Your Solar Investment

A battery ensures no solar energy is wasted. Every unit generated works for you, not the grid. 

4. Environmental Benefits

By consuming more of your own clean energy, you reduce reliance on fossil fuels and lower your carbon footprint. 

5. Take Advantage of Smart Tariffs

Some solar batteries let you charge during off-peak hours when electricity is cheap, then use it or even sell it back during peak hours. 

6. Increase Property Value

Homes with solar and battery storage are often more attractive to buyers, thanks to their efficiency and resilience. 

 

Should I get a Battery If I Already Have Panels? 

Yes, you can add a solar battery to most existing solar panel systems. Depending on your current inverter, you may need a retrofit or a new hybrid inverter, but the process is generally straightforward. 

 

What Size Solar Battery Do You Need? 

Choosing the right solar battery size depends on your energy usage, household size, and solar panel capacity. Battery sizes are measured in kilowatt-hours (kWh). 

• Small households (1–2 people): 4–6 kWh is usually enough for evening use.
• Medium households (3–4 people): 7–10 kWh balances storage with cost.
• Large households or high usage: 12–20 kWh+ ensures reliable coverage.

Pro tip: Check your evening and overnight electricity use. Your battery should comfortably cover that demand to maximise savings. 

 

How Much Do Solar Batteries Cost? 

The cost of a solar battery in the UK typically ranges from £2,000 to £8,000, depending on size and brand. While the upfront price may seem high, the long-term savings on electricity bills and potential earnings from selling energy back to the grid often make it worthwhile. 

 

How Long Do Solar Batteries Last? 

Most modern solar batteries last 10–15 years or around, with unlimited charge cycles. Many manufacturers also offer warranties of at least 10 years, giving you peace of mind that your investment will perform long-term. 

 

FAQs About Solar Battery Storage 

1. Is solar battery storage worth it without feed-in tariffs?
   Yes. Even without selling energy back to the grid, using more of your own solar power means lower bills and greater independence.
2. Can I add a battery to an existing solar system?
   Absolutely. Most homes can add a retrofit battery or hybrid inverter to upgrade their system.
3. How long will a solar battery power my house?
   It depends on the size of the battery and your energy use. A 10 kWh battery, for example, can often run an average household for most of the evening and night.
4. Do solar batteries work in winter?
   Yes, though performance depends on how much solar energy your panels generate. Some households top up their batteries using cheaper off-peak grid power in the winter months.

 

Final Thoughts: Is Solar Battery Storage Worth It? 

For most homeowners, solar battery storage is absolutely worth it. It reduces bills, increases independence, and boosts the value of your solar system. With smart tariffs and falling technology costs, solar batteries are becoming a must-have for households looking to future-proof their energy use. 

Whether you’re starting from scratch or adding a battery to your existing solar panels, the right system can pay dividends for years to come. 

Want to discuss how our renewable solutions can help you? Either drop our team a call on:

📍 Midlands: 01543 713026

📍 South: 02392 4005478

or simply click ‘Get a Quote’ below.

 

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