Best Whole-Home Backup Under $5,000

Transfer-switch kits that back up your panel without a five-figure install. Rankings update with the catalog — then size your load for a personal shortlist.

  1. 7.7kWh · 6kW · 132.3 lb

    3 days
  2. 5kWh · 7.2kW · 134.5 lb

    2 days
  3. 3.1kWh · 5kW · 150 lb

    1.2 days

Transfer switches and panel interlocks must be installed by a licensed electrician.

Cost per kWh-cycle

Cost per kWh-cycle (lifetime)

price ÷ (capacity × cycle life × 0.85 inverter efficiency)

UnitPrice$/kWh-cycle
FridgePower$849$0.124
Powerwall 3$15,000$0.131
SOLIX F3000$1,399$0.134
Explorer 5000 Plus$2,879$0.168
SOLIX F3800$1,699$0.174
AC300 + B300K$1,699$0.207
DELTA Pro Ultra$4,099$0.224
DELTA Pro 3$3,199$0.230
AC500 + B300S$2,299$0.252
Mesh Home Battery$1,499$0.276
Yeti Pro 4000$4,000$0.295
SuperBase V6400$6,999$0.426

Lists are a starting point

Your appliances and install path change the ranking.

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