Best Home Batteries UK 2025
Complete buyer's guide to the most popular home battery storage systems available in the UK
Quick Navigation
- Overview
- Tesla Powerwall 3
- Huawei LUNA2000
- GivEnergy All-in-One
- SolarEdge Home Battery
- myenergi libbi
- Sungrow SBR Battery
- Enphase IQ Battery 5P
- AlphaESS SMILE Series
- LG Chem RESU Prime
- BYD Battery-Box
- FoxESS Energy Cube
- EcoFlow PowerOcean
- Comparison Table
- Costs & Pricing
- Installation
- Potential Savings
- FAQ
Home Battery Storage Overview
Home battery storage systems allow you to store excess energy from your solar panels or cheap off-peak electricity from the grid. This stored energy can then be used when you need it most, reducing your reliance on expensive grid electricity and providing backup power during outages.
Key Benefits
💰 Lower Energy Bills
Store cheap off-peak electricity and use it during expensive peak hours. Average savings of £400-800 per year.
⚡ Backup Power
Keep essential appliances running during power cuts with automatic backup functionality.
🌱 Energy Independence
Reduce reliance on the grid and maximize use of your solar panel system.
📈 Increase Property Value
Modern energy storage systems can add value to your property and appeal to eco-conscious buyers.
0% VAT on Home Batteries
Good news! As of February 2024, all home battery storage systems qualify for 0% VAT, whether installed with solar panels or as standalone systems. This can save you hundreds of pounds on your installation.
Tesla Powerwall 3
The Tesla Powerwall 3 is the latest and most advanced home battery from Tesla, featuring an integrated solar inverter and significantly improved power output compared to the Powerwall 2.
Capacity
13.5 kWh
100% usable
Power Output
11.04 kW
Continuous AC
Warranty
10 Years
Unlimited cycles
Price Range
£7,995 - £9,500
Installed
✅ Pros
- Integrated solar inverter saves installation costs
- High power output can run whole home during outages
- Tesla Gateway provides seamless backup switching
- Storm Watch feature automatically prepares for bad weather
- Excellent build quality and reliability
- User-friendly Tesla app for monitoring
❌ Cons
- Higher upfront cost than alternatives
- Must use Tesla-certified installers
- Limited availability due to high demand
- Requires internet connection for full warranty
Customer Feedback
"The Powerwall 3 has been fantastic. The integration with our solar panels was seamless, and we've seen our electricity bills drop by 70%. The backup power feature gave us peace of mind during the winter storms."
- Sarah M., Hampshire
GivEnergy All-in-One Battery
GivEnergy offers excellent value for money with their all-in-one battery system, designed to rival the Tesla Powerwall at a more affordable price point.
Capacity
13.5 kWh
100% usable
Power Output
6 kW
Continuous AC
Warranty
12 Years
Product warranty
Price Range
£6,942 - £7,500
Installed
✅ Pros
- Excellent value for money
- 12-year warranty (longest in class)
- 100% depth of discharge
- Compatible backup gateway available
- Good customer support
- Modular design allows expansion
❌ Cons
- Lower power output than Tesla
- Backup gateway costs extra
- Newer brand with less track record
- Requires health checks to maintain warranty
myenergi libbi
The myenergi libbi is a modular battery system that adapts to your needs, with excellent integration with other myenergi products like zappi EV chargers and eddi immersion heaters.
Capacity
5-20 kWh
Modular design
Power Output
3.68-5 kW
Per inverter
Warranty
10 Years
Battery & inverter
Price Range
£4,500 - £12,000
Depending on size
✅ Pros
- Highly modular and customizable
- Excellent integration with myenergi ecosystem
- Smart energy management features
- Can work with or without solar panels
- Optional backup power functionality
- User-friendly app interface
❌ Cons
- Lower power output per unit
- More complex installation for larger systems
- Backup power requires additional hardware
- Limited availability of installers
Enphase IQ Battery 5P
Enphase offers the longest warranty in the industry at 15 years, with excellent reliability and perfect integration with Enphase microinverter systems.
Capacity
5 kWh
Per unit, stackable
Power Output
3.84 kW
Per unit
Warranty
15 Years
Industry leading
Price Range
£4,600 - £6,000
Per 5kWh unit
✅ Pros
- Industry-leading 15-year warranty
- Excellent reliability and build quality
- Perfect for retrofit installations
- Modular design allows precise sizing
- Great for time-of-use tariffs
- 97% round-trip efficiency
❌ Cons
- Higher cost per kWh than competitors
- No backup power in UK models
- Smaller capacity per unit
- Requires multiple units for larger homes
LG Chem RESU Prime
LG Chem has been a leading battery manufacturer for years, offering reliable lithium-ion storage with excellent energy density and proven track record.
Capacity
10-16 kWh
Various models
Power Output
5-7 kW
Continuous
Warranty
10 Years
4,000 cycles
Price Range
£8,300 - £13,500
Installed
✅ Pros
- Proven reliability and track record
- High energy density, compact design
- Best usable capacity per unit
- Easy installation and replacement
- Wide compatibility with inverters
- Strong brand reputation
❌ Cons
- Higher cost than some alternatives
- Limited total capacity when stacked
- No liquid cooling system
- Fewer smart features than newer competitors
Huawei LUNA2000
The Huawei LUNA2000 is a highly scalable, modular energy storage system offering flexible capacities from 5 kWh to over 80 kWh, perfect for both residential and commercial applications.
Capacity
5-30 kWh
Modular design
Power Output
5-10 kW
With SUN2000 inverter
Warranty
10 Years
Product warranty
Price Range
£6,500 - £15,000
Depending on size
✅ Pros
- Highly modular - expand from 5kWh to 30kWh+
- Excellent integration with Huawei solar systems
- Compact, stackable design
- Advanced FusionSolar app monitoring
- Supports both partial and whole-home backup
- High efficiency (95%+ round-trip)
❌ Cons
- Requires Huawei SUN2000 inverter
- More complex installation for larger systems
- Limited installer network in UK
- Higher cost for smaller configurations
Customer Feedback
"The modularity is fantastic - we started with 10kWh and easily added another 5kWh module when we got an EV. The monitoring app is very detailed and helpful."
- David K., Surrey
Sungrow SBR Battery
Sungrow's energy storage solution combines functionality with reliability, offering a practical option for homeowners aiming to optimise their solar energy usage with excellent value for money.
Capacity
9.6-25.6 kWh
3.2kWh modules
Power Output
5 kW
With SH5K-30 inverter
Warranty
10 Years
Product warranty
Price Range
£5,500 - £12,000
Depending on size
✅ Pros
- Excellent value for money
- 100% depth of discharge
- Modular design for easy expansion
- Good integration with Sungrow inverters
- Reliable performance and efficiency
- iSolarCloud monitoring platform
❌ Cons
- Partial backup only (manual switch)
- Requires additional components for full backup
- Less advanced app interface than competitors
- Newer brand in UK market
SolarEdge Home Battery
SolarEdge, in partnership with LG Chem, offers a residential energy storage solution with record-breaking efficiency and advanced safety features, perfect for existing SolarEdge solar installations.
Capacity
5-10 kWh
Per battery unit
Power Output
5 kW
Continuous AC
Warranty
10 Years
Energy throughput warranty
Price Range
£6,000 - £9,500
Installed
✅ Pros
- Record-breaking 99% inverter efficiency
- 94.5% round-trip battery efficiency
- Advanced safety features (UL9540A certified)
- Perfect integration with SolarEdge systems
- Module-level monitoring and optimization
- Safety Gap Technology protection
❌ Cons
- Requires SolarEdge inverter system
- Higher upfront cost than some alternatives
- Limited to 3 batteries per inverter
- Less flexibility for non-SolarEdge installations
Customer Feedback
"The efficiency is incredible - we're getting 99% from our inverter and the battery integration is seamless. The monitoring shows exactly how each panel is performing."
- Emma T., Bristol
BYD Battery-Box
BYD is one of the world's largest battery manufacturers, offering robust lithium iron phosphate (LFP) battery systems with excellent safety characteristics and long cycle life.
Capacity
5.1-22.1 kWh
HVS/HVM series
Power Output
5-20 kW
Depending on model
Warranty
10 Years
6,000+ cycles
Price Range
£4,500 - £15,000
Depending on capacity
✅ Pros
- Lithium Iron Phosphate (LFP) chemistry - very safe
- Long cycle life (6,000+ cycles)
- Wide compatibility with many inverter brands
- Excellent value for money
- Modular design allows easy expansion
- Backup power capability with compatible inverters
❌ Cons
- Basic monitoring compared to premium brands
- Larger and heavier than some alternatives
- Installation requires certified technicians
- Limited smart features
FoxESS Energy Cube
FoxESS offers affordable energy storage solutions with good performance and reliability, making home battery storage accessible to more homeowners across the UK.
Capacity
5-10 kWh
Per unit
Power Output
3.7-6 kW
Continuous AC
Warranty
5+5 Years
Extendable warranty
Price Range
£4,000 - £8,500
Installed
✅ Pros
- Very competitive pricing
- 90% depth of discharge
- Compact design suitable for most homes
- Good integration with FoxESS inverters
- User-friendly monitoring app
- Partial backup power capability
❌ Cons
- Shorter warranty than premium brands
- Limited scalability options
- Less advanced features than competitors
- Newer brand with limited UK track record
AlphaESS SMILE Series
AlphaESS brings innovative pack-balancing technology to the UK market, offering improved efficiency and longer battery life through intelligent battery management systems.
Capacity
3.65-14.6 kWh
Modular design
Power Output
5-10 kW
Depending on model
Warranty
10 Years
Product warranty
Price Range
£4,500 - £11,000
Depending on capacity
✅ Pros
- Patented pack-balancing technology
- 12% more efficient energy utilization
- 20% longer battery lifespan
- Fast 60% quicker battery calibration
- Modular expansion from 3.65kWh to 14.6kWh
- Advanced monitoring and control features
❌ Cons
- Newer technology with limited long-term data
- Higher cost than basic alternatives
- Requires compatible AlphaESS inverters
- Limited installer network in UK
EcoFlow PowerOcean
EcoFlow PowerOcean represents cutting-edge home energy storage technology with industry-leading safety features, expandable capacity up to 45kWh, and a remarkable 15-year warranty - one of the longest in the industry.
Capacity
5-45 kWh
Highly expandable
Power Output
6-12 kW
Continuous backup
Warranty
15 Years
Industry leading
Price Range
£8,000 - £25,000
Depending on capacity
✅ Pros
- Industry-leading 15-year warranty
- Massive expandability (5kWh to 45kWh)
- 6,000+ charge cycles with LiFePO4 chemistry
- IP65 certification for outdoor installation
- Integrated fire prevention module
- Auto-heating for winter performance
- Advanced EcoFlow app with AI features
- Over-the-air updates
❌ Cons
- Higher upfront cost than basic alternatives
- Requires professional installation
- Limited installer network in some areas
- Newer brand with less UK track record
Customer Feedback
"The PowerOcean has exceeded expectations. The 15-year warranty gave us confidence, and the expandability means we can add more capacity as needed. The app is incredibly detailed and user-friendly."
- Michael R., London
Battery Comparison Table
| Battery | Capacity | Power Output | Warranty | Price Range | Best For |
|---|---|---|---|---|---|
| Tesla Powerwall 3 | 13.5 kWh | 11.04 kW | 10 years | £7,995 - £9,500 | Premium features & backup |
| Huawei LUNA2000 | 5-30 kWh | 5-10 kW | 10 years | £6,500 - £15,000 | Best modularity |
| GivEnergy All-in-One | 13.5 kWh | 6 kW | 12 years | £6,942 - £7,500 | Best value for money |
| SolarEdge Home Battery | 5-10 kWh | 5 kW | 10 years | £6,000 - £9,500 | Best efficiency (99%) |
| myenergi libbi | 5-20 kWh | 3.68-5 kW | 10 years | £4,500 - £12,000 | Modular flexibility |
| Sungrow SBR | 9.6-25.6 kWh | 5 kW | 10 years | £5,500 - £12,000 | Great performance |
| Enphase IQ 5P | 5 kWh | 3.84 kW | 15 years | £4,600 - £6,000 | Longest warranty |
| AlphaESS SMILE | 3.65-14.6 kWh | 5-10 kW | 10 years | £4,500 - £11,000 | Innovative technology |
| LG Chem RESU | 10-16 kWh | 5-7 kW | 10 years | £8,300 - £13,500 | Proven reliability |
| BYD Battery-Box | 5.1-22.1 kWh | 5-20 kW | 10 years | £4,500 - £15,000 | Proven technology & safety |
| FoxESS Energy Cube | 5-10 kWh | 3.7-6 kW | 5+5 years | £4,000 - £8,500 | Budget friendly |
| EcoFlow PowerOcean | 5-45 kWh | 6-12 kW | 15 years | £8,000 - £25,000 | Advanced technology & longest warranty |
Costs & Pricing Guide
What Affects Battery Costs?
- Capacity (kWh): Larger batteries cost more but offer better value per kWh
- Power Output (kW): Higher power output allows more appliances to run simultaneously
- Brand & Quality: Premium brands like Tesla command higher prices
- Installation Complexity: Existing solar systems vs new installations
- Additional Hardware: Backup gateways, monitoring systems, etc.
Typical Cost Ranges (Installed)
Small Systems (5-7 kWh)
£4,500 - £7,000
Suitable for 1-2 bedroom homes or supplementing existing usage
Medium Systems (10-15 kWh)
£7,000 - £11,000
Ideal for 3-4 bedroom homes with average energy usage
Large Systems (15+ kWh)
£11,000 - £15,000+
Perfect for large homes or those with high energy consumption
Installation Process
What to Expect
Initial Survey
Technical assessment of your property, electrical system, and energy needs
Design & Quote
Custom system design with detailed pricing and performance projections
Permits & Approvals
DNO applications and building control notifications if required
Installation Day
Professional installation typically takes 1-2 days depending on complexity
Commissioning
System testing, app setup, and handover with full training
Installation Requirements
- Space: Indoor or outdoor mounting space, typically 1m x 0.6m
- Electrical: Consumer unit upgrade may be required
- Internet: WiFi connection for monitoring and updates
- Access: Clear access for installation team and equipment
- Ventilation: Adequate airflow for indoor installations
Choosing an Installer
Always choose an MCS-certified installer for:
- Quality assurance and industry standards compliance
- Warranty protection from manufacturers
- Insurance-backed guarantees
- Eligibility for government incentives
Potential Savings & Payback
How Much Can You Save?
Actual savings depend on your energy usage patterns, tariff type, and system size. Here are typical scenarios:
Time-of-Use Tariffs
£400-600/year
Charge battery during cheap off-peak hours (7p/kWh) and use during expensive peak times (35p/kWh)
Solar + Battery
£600-1000/year
Store excess solar energy instead of exporting at low rates, use when needed
Backup Value
Priceless
Avoid food spoilage, work disruption, and inconvenience during power cuts
Typical Payback Periods
- 6-8 years: Battery-only systems with time-of-use tariffs
- 5-7 years: Solar + battery systems with high self-consumption
- 4-6 years: Large systems with optimal usage patterns
Note: Rising energy prices can significantly reduce payback periods
Frequently Asked Questions
Do I need solar panels to have a home battery?
No, home batteries can work independently of solar panels. You can charge them from the grid during cheap off-peak hours and use the stored energy during expensive peak times.
How long do home batteries last?
Most modern lithium-ion home batteries last 10-15 years with minimal degradation. Premium brands like Tesla and LG offer 10-year warranties with 80% capacity guarantees.
Can a home battery power my whole house?
It depends on the battery size and your energy usage. A 13.5kWh battery can typically power essential appliances for 8-12 hours, or a whole house for 4-6 hours during an outage.
Are home batteries safe?
Modern home batteries are very safe when properly installed. They include multiple safety systems like thermal management, fire suppression, and automatic shutdown features.
Do home batteries require maintenance?
Home batteries require minimal maintenance. Most systems are self-monitoring and only need occasional software updates and annual inspections by certified technicians.
Can I add a battery to my existing solar system?
Yes, most home batteries can be retrofitted to existing solar systems. AC-coupled batteries are particularly suitable for this, though DC-coupled options may be more efficient for new installations.
Ready to Install a Home Battery?
Home battery storage is an excellent investment for UK homeowners, offering energy independence, cost savings, and backup power. The key is choosing the right system for your needs and budget.
For most homes, we recommend:
- Tesla Powerwall 3 for premium features and reliability
- GivEnergy All-in-One for the best value for money
- myenergi libbi for maximum flexibility and customization
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