Scotland gets enough sunshine to make solar worthwhile — but the real question is what happens to the electricity you generate at 2pm on a Tuesday when nobody’s home.
That’s where battery storage comes in. A home battery stores your surplus solar generation so you can use it in the evening, overnight, or on grey winter days. It also lets you take advantage of cheaper off-peak electricity tariffs if your energy supplier offers time-of-use rates.
Here’s a straightforward guide to the best systems available in Scotland in 2026, and how to choose the right one for your home.
What to look for in a home battery
Before comparing brands, it helps to know the numbers that actually matter:
Usable capacity (kWh) — how much energy the battery can store and actually use. A typical Scottish home uses 8–12 kWh per day, so a 5–10 kWh battery covers your evening and overnight needs well.
Depth of discharge (DoD) — the percentage of capacity you can safely use. A 10 kWh battery at 90% DoD gives you 9 kWh of usable storage. Most modern lithium batteries are 90–100%.
Round-trip efficiency — the percentage of energy you put in that you get back out. Look for 90%+ to avoid wasting your solar generation.
Warranty — most quality batteries carry a 10-year warranty at a specified minimum capacity (typically 70–80% of original capacity remaining).
Compatibility — make sure the battery works with your solar inverter. Some systems are designed to work together; others are more flexible.
The best systems we install
EcoFlow Power Ocean
EcoFlow’s home battery is a strong all-rounder and one of the most flexible systems on the market. It’s modular, so you can start with one unit and expand capacity as your needs change — useful if you’re planning to add an EV charger later.
- Usable capacity: 5 kWh per module (expandable)
- Depth of discharge: 100%
- Round-trip efficiency: 89%
- Warranty: 10 years
- Best for: homes that want flexibility to scale up
Sigenergy SigenStor
Sigenergy has quickly built a reputation for smart energy management. The SigenStor system integrates tightly with solar, EV charging and smart home controls — giving you granular control over how and when you use your stored energy.
- Usable capacity: 5–20 kWh (scalable)
- Depth of discharge: 100%
- Round-trip efficiency: 94%
- Warranty: 10 years
- Best for: households with an EV or plans to add one; tech-forward homeowners who want full energy management
Fox ESS ECS Series
Fox ESS is a reliable mid-range option that pairs cleanly with most solar PV systems. It’s a solid, no-fuss battery that performs consistently — and the price-per-kWh is competitive.
- Usable capacity: 5.12–20.48 kWh
- Depth of discharge: 100%
- Round-trip efficiency: 90%
- Warranty: 10 years
- Best for: homeowners who want dependable performance without premium pricing
Duracell Energy Bank
Duracell’s entry into home energy storage has been well received. The Energy Bank is straightforward to install and carries significant brand trust — backed by Duracell’s 10-year warranty and responsive UK support.
- Usable capacity: 5 kWh per module (stackable to 20 kWh)
- Depth of discharge: 95%
- Round-trip efficiency: 90%
- Warranty: 10 years
- Best for: homeowners who want a trusted brand and simple, reliable setup
How much does battery storage cost in Scotland?
A single battery unit typically costs £3,500–£7,000 installed, depending on capacity and brand. Larger or stackable systems for bigger homes can run higher.
When you combine solar PV and battery storage as a package, most Scottish homeowners see total installation costs of £8,000–£15,000 depending on system size.
The good news: Home Energy Scotland offers interest-free loans of up to £38,500 to cover the cost of solar PV and battery storage together — so you can spread the cost without paying interest.
Which battery is right for your home?
The honest answer: it depends on your household. Key questions to ask:
- How much electricity do you use in the evening? Larger households need more storage capacity.
- Do you have or plan to get an EV? A larger, smarter system pays back faster.
- Do you want to expand later? Choose a modular system.
- What’s your solar inverter? Check compatibility before buying.
Our team will size the right battery for your home as part of your free survey — there’s no point paying for storage you won’t use, or under-speccing a system that won’t cover your evening demand.
Ready to find out what’s right for your home?
We’re MCS certified, Scotland-based, and part of Speedy Roofing — so we understand Scottish roofs as well as solar systems. Book your free survey today.
