5 April 20257 min read
Everything you need to know about adding battery storage to your solar system, including costs, benefits, and the best battery options available in the UK.
Battery storage allows you to store excess solar energy generated during the day for use in the evening, maximising your self-consumption and reducing grid dependence.
Key Points
- Tesla Powerwall 3 offers 13.5kWh capacity with integrated inverter
- GivEnergy batteries provide excellent value with modular expansion options
- SolarEdge Energy Bank integrates seamlessly with SolarEdge inverters
- Typical battery costs range from £2,500 for 5kWh to £8,000+ for 13.5kWh
- Batteries typically last 10-15 years with manufacturer warranties
For households with high evening energy usage, battery storage can increase self-consumption from 30% to 80%, making it a worthwhile investment despite the upfront cost.
