Solar Panels for Backup Power
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Can solar panels provide backup power?
Standard UK solar systems do NOT provide backup power — they disconnect during grid outages (anti-islanding safety). For backup power, you need a battery with Emergency Power Supply (EPS) capability: Tesla Powerwall (whole-home backup, £5,500-£7,500), GivEnergy (partial backup via EPS port, £4,000-£5,500), or Fox ESS (partial backup, £3,500-£5,000). Cost for adding backup to existing solar: £4,000-£8,500 depending on battery and configuration.
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