Battery Storage Installation
Store your solar energy and use it when you need it most
A home battery costs £2,500–£8,500 installed with 0% VAT and lifts solar self-consumption from around 35–50% to 70–85%. Paired with a smart tariff like Octopus Flux, most East Anglia homes save an extra £400–£800 a year. We fit Fox ESS, GivEnergy and Tesla Powerwall systems.
About Battery Storage Installation
Battery storage systems allow you to store excess solar energy generated during the day for use in the evening and overnight. Combined with smart tariffs like Octopus Flux or Intelligent Go, you can charge cheaply overnight and sell stored energy during peak periods. Systems from Tesla Powerwall, Fox ESS, and SolarEdge include smart monitoring and emergency backup power during outages.
Key Benefits
Battery Storage Costs
Prices include installation and commissioning. All systems qualify for 0% VAT when installed with or added to solar.
| Battery | Capacity | Installed Cost | Warranty |
|---|---|---|---|
| Solis 5.1kWh | 5.1 kWh | £3,600 - £4,200 | 10 years |
| Fox ESS 9.6kWh | 9.6 kWh | £5,200 - £6,000 | 10 years |
| Tesla Powerwall 3 | 13.5 kWh + inverter | £7,000 - £11,500 | 10 years |
| Pylontech Force-H2 | 7.1 - 14.2 kWh | £3,500 - £5,000 | 10 years |
| Fox ESS EVO | 5 - 10 kWh | £3,800 - £5,200 | 10 years |
| BYD HVS/HVM | 5.1 - 22.1 kWh | £4,000 - £8,000 | 10 years |
Helpful Guides
Battery Storage Comparison
Fox ESS
Fox ESS EVO 9.6kWh
Installed from
£4,100
Capacity
9.6kWh
Power Output
5kW
Cycle Life
6,000+
Warranty
10 years
Chemistry
LFP
Smart Features
FoxCloud app
Strengths
- Strong value per kWh
- Easy AC-coupled retrofit
- Smart tariff optimisation built in
- Modular and expandable
Limitations
- Less well-known brand vs Tesla
- App interface less polished than Tesla
Prices include 0% VAT and full installation
Get a quoteHuawei
LUNA2000-10-S0
Installed from
£4,200
Capacity
10kWh
Power Output
5kW
Cycle Life
6,000+
Warranty
10 years
Chemistry
LFP
Smart Features
FusionSolar app
Strengths
- 5kW power output for faster charge/discharge
- Modular 5kWh blocks
- Strong brand and R&D investment
- Seamless with Huawei inverters
Limitations
- Best paired with Huawei inverter only
- Premium pricing
Prices include 0% VAT and full installation
Get a quoteTesla
Powerwall 3
Installed from
£6,500
Capacity
13.5kWh
Power Output
11.5kW
Cycle Life
Unlimited*
Warranty
10 years
Chemistry
LFP
Smart Features
Tesla app
Strengths
- Largest capacity single unit
- Highest power output available
- Built-in inverter eliminates separate unit
- Excellent Tesla app experience
Limitations
- Highest cost
- Long installation wait times
- Tesla installer required
Prices include 0% VAT and full installation
Get a quoteOur Installation Process
Energy Assessment
We analyse your energy usage patterns and existing solar system to recommend the optimal battery size and configuration.
System Selection
We recommend the best battery system for your needs from leading manufacturers including Tesla Powerwall, Fox ESS, and SolarEdge.
Installation
Battery installation typically takes half a day. We handle all electrical connections, configuration, and testing.
Smart Setup
We configure your battery for optimal performance, set up monitoring apps, and help you switch to a compatible smart tariff if beneficial.
Typical Timeline
Works Well With
Generate your own electricity to store. Essential pairing for maximum battery value.
Store cheap overnight electricity for morning EV charging. Optimise with Octopus Go or Flux.
Store cheap overnight electricity to power your heat pump during peak periods. Reduces heat pump running costs further.
Financing
0% VAT when installed with or added to an existing solar system. Finance options available.
Warranty
- 10-year battery warranty (Tesla, Fox ESS)
- 10,000+ cycle lifespan
- 10-year workmanship guarantee
- Remote monitoring included
Popular Combinations
Combine services for greater savings. All figures based on typical East Anglia households.
Solar + Battery
The essential pairing. Store daytime solar for evening use and maximise self-consumption.
Solar + Battery + EV Charger
Store solar energy and charge your EV overnight. Eliminate grid dependence for transport.
Related Articles
Frequently Asked Questions
Is battery storage worth the investment?
With smart tariffs like Octopus Flux offering 25-27p/kWh export rates and cheap overnight charging, battery storage can save an additional £400-£800 per year on top of solar savings. Combined with 0% VAT, payback periods are typically 5-8 years.
What size battery do I need?
Most homes benefit from a 5-10kWh battery. A 5kWh battery suits a smaller household, while a 10kWh battery is ideal for families with higher evening consumption. We size your battery based on your actual usage data.
Can I add a battery to my existing solar system?
Yes. We retrofit battery storage to existing solar installations. Whether your system is 1 year old or 10 years old, we can integrate a compatible battery solution.
Do batteries work during power cuts?
Many modern battery systems include Emergency Power Supply (EPS) functionality, which provides backup power during grid outages. We can recommend and install systems with this capability.
What smart tariffs work with battery storage?
Smart tariffs like Octopus Flux, Intelligent Octopus Go, and Octopus Agile work brilliantly with battery storage. They offer cheap overnight electricity (as low as 7p/kWh) for charging your battery, and export rates of 15-27p/kWh for selling stored energy back during peak periods. Most modern battery systems can automate this process.
What is a hybrid inverter?
A hybrid inverter manages both your solar panels and battery storage in one unit, simplifying your system and reducing installation costs. SolarEdge and Huawei both offer hybrid inverters. If you are installing solar and battery together, a hybrid inverter is typically the most cost-effective option.
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