Worth it for whom? That’s the actual question, and it has three inputs: how often your power fails, how long it stays out, and what’s at stake inside your house while it is. A standby generator is a five-figure purchase once you count all seven line items — so treat the decision like one, and be suspicious of anyone whose math always lands on yes.
What are the three inputs, honestly measured?
Frequency. Not the region’s — yours. Pull up your outage history (your utility’s app has it) and count. Streets a mile apart live on different feeders and different tree lines; your neighbor’s misery is not your data.
Duration. An hour of darkness costs you almost nothing. Day three of a spring storm event costs you every refrigerated thing you own, every hour of remote work, and possibly a hotel. The valley’s benchmark is April 2011, when parts of the Tennessee Valley went most of a week dark — that’s the event this market plans around, and every spring the sirens remind everyone why.
Stakes. A freezer full of venison, a home office that bills by the hour, a sump pump losing to a wet April, someone on oxygen. Stakes are why two identical outage histories produce two different right answers.
When is the answer no?
When all three inputs come up small. Brief, rare outages in a house where nothing critical spoils, nobody’s income stops, and nobody’s health depends on an outlet — that’s the twice-a-year-for-an-hour pattern, and for it, a standby generator is the wrong purchase. A portable unit with an interlock kit covers that house for a fraction of the cost. That alternative is laid out on our homepage, and it’s been our position since the first page of this site.
The medical exception cuts the other way: powered medical equipment ends the cost-benefit exercise entirely. That house needs backup power; the only remaining questions are sizing and headroom.
If the answer is yes, what does yes cost — and return?
The spend side is structural and knowable: seven line items, of which the unit is roughly half, with tier choice moving three of them. The return side is smaller than the brochures imply. Maybe an insurance conversation, maybe some buyer appeal at resale — what’s verifiable on both gets its own page. Mostly what you’re buying isn’t a return. It’s the outage not mattering.
Say that plainly to yourself before you sign anything: this is a purchase against bad days, priced like a car. If that framing still clears — for plenty of homes here, it genuinely does — you’re buying for the right reason.