The honest version first
A whole-home standby generator is a real investment, and not every household in greater Houston needs one. Before you spend on equipment and installation, it’s worth being clear-eyed about how often your power actually goes out, how long it stays out, and what’s genuinely at risk in your home when it does. This page walks through that decision the way a straight-talking installer would — and a quick reminder up front: we’re a referral resource that connects you with one vetted, licensed local installer. We don’t do the work ourselves and we don’t sell you anything on this page.
What outages actually look like here
Houstonians have learned the hard way that “the grid” is not abstract. Hurricane Beryl rolled through in July 2024 and knocked out service to roughly 2.7 million CenterPoint customers — and for a large share of them, the lights stayed off for a week or more, during some of the most punishing heat of the summer. That single event reshaped how a lot of families think about backup power.
It wasn’t a one-off. Winter Storm Uri in February 2021 pushed the ERCOT grid to the edge of collapse and left millions across Texas cold and dark for days. The May 2024 derecho flattened transmission structures and darkened downtown. Go back further and you’ll find Hurricane Ike in 2008 and the flooding of Harvey in 2017. The pattern is hard to ignore.
A piece of this is structural. Texas runs on its own islanded grid through ERCOT, with limited ability to import power from neighboring regions when demand spikes. And for most of greater Houston, CenterPoint Energy owns the poles, wires, and substations that deliver electricity and restore it after a storm — so when a hurricane shreds the distribution network, restoration takes as long as it takes, regardless of which retail provider you happen to buy your kilowatt-hours from. (Curious about the full timeline? We keep a running log on the power outage history page.)
Who really benefits from standby power
Some households cross from “nice to have” into “hard to live without.” A standby unit tends to pay for itself in peace of mind when:
- Someone in the home depends on electricity for health. Oxygen concentrators, CPAP machines, dialysis equipment, refrigerated medication like insulin — a multi-day outage in July heat isn’t an inconvenience, it’s a danger.
- You’re on a private well or a septic lift station. No power means no water and no waste handling. Plenty of homes out toward Cypress, Waller County, and the rural edges of Montgomery County run on wells.
- Heat is the threat, not cold. Losing air conditioning during a Gulf Coast summer is the core reason backup power matters here. Indoor temperatures climb fast, and for older adults, infants, and anyone with a heart or respiratory condition, that’s a real risk.
- You work from home or run a business off the property. A few days offline has a dollar cost that adds up quickly.
- You’ve simply had enough. After Beryl, “I never want to do that again” is a perfectly valid reason.
When a portable generator is genuinely enough
Here’s the part many sites skip: you might not need a standby unit at all. If your outages are usually short, your medical and water situation is straightforward, and you mainly want to keep a fridge cold and a few fans running, a quality portable generator can carry you through — at a fraction of the cost.
The honest tradeoffs: a portable needs to be hauled out, run on gasoline you have to store and refill (a real headache when stations are down after a storm), kept far from the house to avoid carbon-monoxide risk, and it won’t power your central AC or come on automatically while you’re away. A standby unit, by contrast, sits permanently installed, senses the outage, and starts on its own — typically running on natural gas piped in by CenterPoint or on propane where gas lines don’t reach. If the gap between those two pictures matters to your family, that’s your answer.
How a standby system actually works
In short: the generator lives outside on a pad, wired through an automatic transfer switch. When utility power drops, the switch isolates your home from the grid, the engine starts within seconds, and your circuits are fed from the generator until the utility comes back — then it switches you back and shuts down. You can power the whole house, or use a smaller unit with load management that prioritizes essentials. For the full walkthrough, see how installation works and our install-day guide.
What it tends to cost (not a quote)
Ballpark only, and your situation will vary: a professionally installed air-cooled residential standby system in the Houston market often lands somewhere in the $8,000–$16,000 range, depending on size, fuel hookup, electrical work, and permitting. Larger liquid-cooled units for big homes run higher. Treat that as orientation, not a price — the only real number comes from a site visit by a licensed installer.
Next steps
If you’ve read this far and you’re leaning toward standby power, two practical moves: figure out roughly what size you’d need with our sizing guide, and think through fuel with the natural gas vs. propane comparison. When you’re ready, we’ll connect you with our vetted local installer — start from the home page or your city page, whether that’s Houston, Katy, or The Woodlands.