Overview of home batteries in the UK
What home batteries are, how they fit into a modern UK home, and why storage is becoming a key part of the energy mix alongside solar panels and smart tariffs.
How home batteries work
The basics of lithium-ion and lithium iron phosphate chemistry, charge and discharge cycles, AC-coupled vs DC-coupled setups, and how a battery integrates with your inverter and consumer unit.
Types of home battery
AC-coupled retrofit batteries, DC-coupled hybrid systems, all-in-one units, and stacked modular setups. Which type suits solar add-ons, new builds, and off-grid applications.
Sizing your battery
How to choose the right capacity in kWh based on your daily usage, solar generation, export patterns and whether you plan to use a time-of-use tariff.
Costs & payback
Typical UK installed prices for 5 kWh, 10 kWh and 15 kWh+ systems, what drives cost, and how to calculate your payback period based on self-consumption and tariff arbitrage.
Grants & 0% VAT
Current VAT relief on home batteries, how ECO4 and LA Flex may apply, and what other financial support is available for storage installations in 2026.
Battery + solar pairing
Why solar and battery work best together, how to match battery capacity to your panel output, and the difference in savings between solar-only and solar-plus-storage setups.
Smart tariff strategies
How to use batteries with Octopus Intelligent, Agile and Go tariffs to charge cheap overnight and discharge during peak hours — even without solar panels.
Top battery brands & models
A comparison of the leading home battery brands in the UK including GivEnergy, Tesla Powerwall, Fox ESS, SolaX and Sofar, covering capacity, warranty, app features and installer availability.
Finding a vetted installer
How to find an MCS-certified battery installer, what qualifications to look for, and how to compare quotes from vetted professionals in your area.