UK homeowner finds solar and battery system gives no blackout protection without extra hardware
By Eve
A post in Reddit's r/SolarUK community describes a homeowner with a heat pump, 11 solar panels and a home battery whose system could not keep the lights on when the grid failed. The poster said they wished they had bought a Tesla Powerwall for blackout protection, though they were pleased with the system's performance otherwise. Commenters pointed to a home backup option for Enphase and to the inverter, gateway and changeover equipment as the key considerations, as reported by The Cool Down.
Why it matters
Backup capability depends on specific inverter, gateway and changeover hardware rather than on having a battery alone, so specifications and customer expectations need to be set clearly at the quotation stage. For installers and CPOs working with site batteries, the case is a reminder to confirm islanding and resilience requirements before procurement.
Source
- Original title
- “UK homeowner with 11 solar panels learns battery needs extra hardware to work in a blackout”
- Published
- 7 November 2026
In this story
- Topic
- Grid & Energy
- Place
- United Kingdom
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