Tesla Powerwall 3 vs BYD vs GivEnergy: UK Battery Comparison 2026
The three batteries KMM most commonly quotes. Cost, capacity, lifetime, UK supply, app, integration.
The side-by-side comparison
Our verdict
BYD wins on serious commercial scale (50–230 kWh) and per-kWh cost. Tesla Powerwall 3 wins on integration, app and brand presence for hospitality. GivEnergy wins on UK supply chain, fastest delivery, and small commercial. The match depends entirely on project size + customer priorities.
Real KMM installs
Every case study below is a real KMM customer with measured Year 1 generation, real payback maths and named project manager.
Doctors' Surgery Solar Rescue: 100kW + Battery Backup
A Market Deeping doctors' surgery had been let down by a previous solar installer — non-stop issues, no monitoring, zero confidence. KMM installed 100kW solar, 100kW battery, Tigo optimisers on every panel.
UK Farm Solar Case Study: 3-Year Payback
UK farm sized its solar at 50,000 kWh against 37,000 kWh usage to future-proof. KMM modelled a 3-year 3-month payback and roughly £500k of 30-year savings.
UK Farm Solar: Cutting Energy Costs on a Dryer
UK farm with grid-only power and a summer grain dryer turned to solar to harness rising energy costs, drive its dryer, and earn export income.
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Tell us your priorities and we will recommend the right combination for your project.
