Home battery storage, by system type
A new solar-and-battery install, a battery-only retrofit and an off-peak arbitrage setup all size and pay back differently. We quote around how you actually use power rather than a one-size figure. Pick the setup closest to yours for typical price, payback and whether it fits your home.
Solar + Battery (New Combined Install)
Typical 3.5-5 kW inverter / 5-13.5 kWh usable, 8-year payback. £9,000-£16,000 (panels + battery, 0% VAT).
View solar + battery (new combined install) →
Battery-Only Retrofit (Add to Existing Solar)
Typical 3.6-5 kW / 5-13.5 kWh usable, 7-year payback. £4,000-£9,000 (0% VAT).
View battery-only retrofit (add to existing solar) →
Battery Without Solar (Off-Peak Tariff Arbitrage)
Typical 3.6-5 kW / 10-16 kWh usable, 8-year payback. £5,000-£10,000 (0% VAT).
View battery without solar (off-peak tariff arbitrage) →
Whole-Home Backup / EPS (Power-Cut Protection)
Typical 5-11.5 kW backup / 10-27 kWh usable, 10-year payback. £8,000-£18,000 (0% VAT).
View whole-home backup / eps (power-cut protection) →
Small System (5 kWh) - Starter
Typical 2.6-3.6 kW / ~5 kWh usable, 7-year payback. £3,500-£5,500 (0% VAT).
View small system (5 kwh) - starter →
Mid System (10 kWh) - The Sweet Spot
Typical 3.6-5 kW / ~10 kWh usable, 7-year payback. £5,000-£8,500 (0% VAT).
View mid system (10 kwh) - the sweet spot →
Large System (13.5 kWh+) - High Usage / Backup
Typical 5-11.5 kW / 13.5-27 kWh usable, 9-year payback. £8,000-£16,000 (0% VAT).
View large system (13.5 kwh+) - high usage / backup →
Not sure which setup fits, or have an unusual tariff? We size from your usage and export goals rather than a template. See real prices on the cost guide, the grants and VAT position on the grants and funding page, or get an indicative figure with the savings calculator.
Get free home battery storage quotes
Responds within one working day
- 1. A quick call to understand your home, usage and what you want the battery to do.
- 2. Compared quotes from independent, MCS-registered installers — sized honestly, with a realistic payback.
- 3. Install and aftercare by MCS-certified engineers, 0% VAT applied.
- MCS Certified
- NICEIC
- RECC
- TrustMark