11/01/2026
🏠 Standby generator or portable with an interlock?
It is the biggest backup power decision a Florida homeowner faces, and the price difference is enormous.
How each one works:
A standby generator is permanently installed outside, wired through an automatic transfer switch, fueled by natural gas or propane, and starts itself within seconds of an outage.
A portable with an interlock rolls out of the garage and connects through an outdoor inlet to your panel. You start it manually, manage fuel, and choose which circuits to power.
The cost gap:
Standby equipment runs $5,000 to $12,000 or more, with installation at $3,000 to $6,000 or more: a five-figure total.
A portable runs $800 to $2,500, with interlock installation in the high hundreds to mid-one-thousands: a fraction of standby, with real, code-compliant backup power.
What each can power:
A standby may power most or all household loads, including air conditioning, if sized for them.
A portable powers selected circuits: refrigerator, lights, fans, phone charging, internet, often a window unit or the air handler fan.
Be honest about what you need.
If keeping the whole house at 72 degrees through a week-long outage matters, that is a standby.
If keeping food cold, phones charged, and a bedroom cool matters, a portable does the job.
Standby makes sense with medical equipment that cannot lose power, frequent travel or a second home, whole-house coverage including central air, and a budget that allows a five-figure investment.
Portable makes sense when you want backup power at a sensible price, you are home during outages, your must-run list is the essentials, and you prefer a smaller upfront investment.
You can start with portable and upgrade later. Many homeowners do: protection now, standby when the budget allows.
Either way, maintenance matters more than the machine: annual service for standby; oil changes, fresh fuel or stabilizer, and test runs for portables.
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On The Bright Side Electric