Home backup is the highest-stakes PPS use case. The cost of an outage isn't measured in inconvenience — it's measured in $200 of fridge spoilage, frozen pipes, sleep apnea machines that don't run, and home offices that miss meetings. The sizing math: a typical European fridge runs ~150W average over 24 hours (it cycles), 60W for router and modem, 30W for a CPAP overnight, plus 100W of laptop/light load when you're awake. Roughly 360W average over a 16-hour wake day plus 200W average over an 8-hour sleep, total ~7000 Wh per day if you cover everything continuously.
Few sub-$2000 stations clear that bar standalone. The realistic strategy is one of two: (1) a 2-3 kWh primary unit cycled twice a day (load → recharge from grid mid-day if grid is intermittent rather than absent, or from solar), or (2) an expandable 2 kWh primary plus 2-3 expansion battery packs to reach 6-8 kWh. The compare table below filters to ≥2000 Wh and ranks by capacity, but watch the expandable-battery column — Bluetti AC500 and EcoFlow Delta Pro Ultra extend to 12 kWh+ which covers genuine multi-day events.
UPS passthrough is the second feature that separates serious home-backup units from camping models. The unit sits between the wall and your appliances, instantly switching to battery when grid drops. Sub-30ms transfer time is the spec to look for — anything slower will cause your computer to reboot. EcoFlow Delta Pro and Bluetti AC500 both deliver UPS-grade transfer; older Jackery Explorer models do not.
No models match this use case yet — the catalog is still growing.