Solar Panels With Battery Costs UK – Prices, Savings & Storage Options
Combining solar panels with battery storage is becoming increasingly popular among UK homeowners who want to use more of their own renewable electricity and reduce reliance on the grid.
This guide explains typical solar panel and battery storage costs in the UK, how different system sizes compare, what affects pricing and whether adding a battery is worth the additional investment.
A solar and battery system allows households to generate electricity during the day, store unused energy and use it later when solar generation is lower.
Quick navigation: What is solar + battery? · Costs · System sizes · Benefits · Solar vs solar + battery · EV charging · Is it worth it? · FAQs
Related guides: Solar Panel Costs UK · Home Battery Storage Costs UK
What is a solar panel and battery storage system?
A solar and battery system combines rooftop solar panels with a home energy storage battery. The solar panels generate electricity during daylight hours, while the battery stores unused energy for later use.
Without battery storage, excess solar electricity is usually exported back to the grid. With a battery, more of your generated electricity can be used within your own home.
Solar panels
Generate renewable electricity from sunlight and reduce the amount of power purchased from energy suppliers.
Battery storage
Stores surplus electricity so it can be used during evenings, overnight or periods of lower solar generation.
Smart energy management
Modern systems can optimise charging, usage and tariffs to improve efficiency.
How much do solar panels with battery storage cost in the UK?
The cost of a solar and battery system depends on the size of the solar installation, battery capacity, equipment quality and installation requirements.
| System type | Typical installed cost | Suitable for |
|---|---|---|
| Solar panels only | £6,000–£10,000+ | Homes wanting renewable electricity generation |
| Solar + 5kWh battery | £9,000–£13,000+ | Smaller households |
| Solar + 10kWh battery | £11,000–£16,000+ | Average family homes |
| Large solar + battery system | £15,000+ | High electricity users and EV owners |
Prices vary significantly depending on the equipment chosen and complexity of installation. These figures are intended as realistic UK guidance rather than fixed quotations.
Solar panel and battery system size guide
The right system depends on your electricity usage, property size and future plans such as owning an electric vehicle or installing a heat pump.
| Household | Typical solar size | Battery size |
|---|---|---|
| Small home / low usage | 2–4kW solar | 3–5kWh battery |
| Average family home | 4–6kW solar | 5–10kWh battery |
| High usage / EV owner | 6kW+ solar | 10–15kWh+ battery |
Oversizing a battery is not always the best financial decision. The aim is to match storage capacity with actual energy usage.
Why add a battery to solar panels?
Use more of your own solar electricity
A battery allows unused daytime solar energy to be stored rather than exported.
Reduce evening electricity costs
Stored energy can be used when household demand increases.
Take advantage of smart tariffs
Some households charge batteries when electricity prices are lower.
Greater energy independence
Battery storage gives households more control over how and when they use electricity.
Solar panels vs solar panels with battery storage
| Solar panels only | Solar + battery | |
|---|---|---|
| Initial cost | Lower | Higher |
| Use of generated electricity | Some exported | More stored and reused |
| Evening usage | Usually requires grid electricity | Can use stored solar energy |
| Energy independence | Moderate | Higher |
How long do solar batteries last?
Modern home batteries are designed to operate for many years, although performance gradually reduces over time.
Important factors include:
- Battery chemistry
- Number of charge cycles
- Temperature conditions
- System management
- Manufacturer warranty
Solar panels, batteries and electric vehicles
Electric vehicles can significantly increase household electricity demand. Combining solar, battery storage and EV charging can help households make better use of renewable energy.
A battery can store solar electricity during the day and help support charging requirements when solar generation is lower.
Future technologies such as vehicle-to-home charging may allow compatible EVs to become an additional energy storage source.
Is solar with battery storage worth it?
Whether solar battery storage is worthwhile depends on your electricity usage, energy prices, system cost and how much of the stored energy you can use.
Battery storage may suit you if:
- You use electricity in the evening
- You have high electricity consumption
- You own an EV
- You want greater energy independence
Solar alone may suit you if:
- Your daytime usage is high
- You want a lower upfront cost
- You export significant surplus electricity
Need help understanding solar and battery costs?
Solar and battery systems vary considerably depending on your home, energy usage and future plans. Understanding the options can help you avoid paying for the wrong system.
Solar panels with battery costs UK: FAQs
How much does solar with a battery cost in the UK?
A typical solar and battery system can cost around £9,000–£16,000+ depending on solar size, battery capacity and equipment choice.
Is it better to get solar panels with a battery?
A battery can improve how much solar electricity you use yourself, but whether it is worth it depends on your household usage and financial goals.
What size battery do I need for solar panels?
Many average UK homes use batteries between 5kWh and 10kWh, although larger homes and EV owners may require more storage.
Can solar batteries save money?
Solar batteries can reduce reliance on grid electricity by storing energy generated at times when solar production is higher.
Can I add a battery later?
Many solar systems can be upgraded with battery storage later, although compatibility should be checked before installation.