Commission possible from Jackery, BLUETTI, and Anker SOLIX links. Same price to you. Disclosure
Vs · Generators
A standby generator sits on a pad, ties to a transfer switch, and starts when voltage dies. A portable generator makes comparable watts for less money and then asks you to do everything else correctly, including carbon monoxide.
Shoppers flatten three products into one search: automatic standby on a pad, a wheeled gasoline generator, and a battery in a plastic case sold as a “solar generator.” Only the first two combust fuel. Only the first one starts without you. This page keeps them apart so you do not buy a quiet indoor-safe station when you needed a well pump, or a 7,000 W jobsite generator when you needed a fridge and a modem.
The Home Backup will not rank named portable gas SKUs or named standby plants with buy buttons. Featured partners here — Jackery, BLUETTI, Anker SOLIX — sell stations and expandable batteries, not pad generators. If your real question is battery versus a gas plant, use home battery vs standby generator. If you already know you want automatic, jump to standby classes and cost.
An automatic standby watches utility voltage. When the grid sags or dies, the automatic transfer switch (ATS) isolates the house from the utility, the engine cranks, and selected loads come back — typically in 10–30 seconds, not instantly. You can be asleep. You can be out of town. The plant still needs fuel, a healthy starting battery, and an exercise schedule. Automatic is not magic; it is a transfer switch plus an engine that was maintained.
A portable does none of that until a person does it. You move the unit outdoors with clearances, start it, plug a cord into a house inlet (or run extension cords), and flip an interlock or a manual transfer switch so you are not backfeeding the neighborhood. If nobody can or should do that work in ice at 2 a.m., portable is the wrong class no matter how many watts the box prints. That is the whole vs.
| Standby (automatic) | Portable gas generator (manual) | |
|---|---|---|
| Start | ATS senses outage, typically 10–30 seconds | You roll it out, start it, plug the inlet |
| Fuel | Natural gas or propane (no jerry cans on the pad plant) | Gasoline and/or propane; gasoline goes stale |
| Circuits | Whole panel or a managed whole-home load | Inlet box + interlock, listed manual transfer, or extension cords |
| CO risk | Outdoor pad, still needs manufacturer and code clearances | High if used in a garage, porch, or too close to windows |
| All-in cost | Often $7k–$15k installed for a straightforward air-cooled job; more for liquid-cooled | Often $800–$4k for the machine plus a legal inlet — not “free watts” |
| Maintenance | Exercise, oil, dealer service | Same oil reality, plus storage, carburetors, and stale fuel |
| Who is the switch | The ATS | You |
Cost bands are order-of-magnitude US numbers, not a bid. A portable that looks cheap becomes less cheap after an electrician installs an inlet, an interlock, and a correctly sized cord. A standby that looks expensive is often still cheaper than a week in a hotel plus a dead freezer plus a flooded basement — if those are real risks at your address. Vanity plants are a different story; that argument lives on the cost page.
Combustion generators produce carbon monoxide. That is not a vibe. Portable units kill people when they are run in garages “just for a minute,” in attached sheds, or too close to an open window that the wind then pushes indoors. Manufacturer clearance diagrams are the starting point; local code can be stricter. Battery-powered CO alarms are not a license to park a running engine next to a bedroom wall. If anyone in the house cannot reliably keep a portable outdoors and pointed away from openings, do not buy a portable as home backup.
Standby plants still exhaust. They belong on a pad with the distances in the installation manual — openings, property lines, meters, and sometimes the neighbor’s bedroom window. A side-yard squeeze that “almost fits” is how you fail inspection. Noise ordinances pile on. Automatic does not mean invisible.
Fuel splits the products again. Standby in the US residential class is almost always natural gas or propane. Natural gas is convenient when the utility stays pressurized during the same storm that killed the electric grid — common in wind, not guaranteed in every disaster. Propane is on-site energy you own; you also own the tank level. Gasoline is the portable default because it is easy to buy and terrible to store. It goes stale, varnish kills carburetors, and a five-gallon can is both a fire problem and a short runtime. Dual-fuel portables help. They do not make you automatic.
The electrical product on the standby side is the automatic transfer switch, not the pretty enclosure. A service-entrance ATS can move the whole house if the generator and gas line can feed it. A load-shed or managed-panel ATS keeps the engine in its class by dropping big loads — range, second condenser, dryer — so the lights and the well stay up. That is licensed electrician work in almost every US jurisdiction. The buying guide walks ATS types without pretending we are your inspector.
On the portable side, the legal house hook is usually an inlet box plus a panel interlock (or a listed manual transfer switch). The interlock is the sliding plate that physically prevents the utility main and the generator breaker from being on together. That is how you avoid backfeeding a line worker. Extension cords to a fridge and a lamp are a different, smaller job — and they still require the generator outdoors. Do not backfeed a dryer outlet. Do not use a “suicide cord.” If that sentence is new to you, hire the electrician before you buy the engine.
Portable gas generators and portable power stations are not the same product. Stations are batteries with inverters. The chemistry on the kits this site features is LiFePO4 / LFP. They have no exhaust. You can run one in a kitchen. They have finite watt-hours. A fridge overnight is a job. A well plus a heat pump for three days is not. Recharge is wall power when the grid flickers back, or portable solar panels in daylight. Browse the aisle at portable power stations.
A gas portable has a fuel tank and an exhaust pipe. Runtime is a fuel problem, not a kilowatt-hour problem. Noise and CO are the tax. If your comparison was “quiet backup for the fridge,” you wanted a station, not a jobsite generator on sale. Featured hops if you are leaving this silo for that cart: Jackery, BLUETTI, Anker SOLIX. Split-phase without a pad: Anker SOLIX F3800. Hours of house essentials: power stations for home backup.
Do not run a portable generator in a garage, even with the door open. Do not treat a power station’s lack of exhaust as a reason it can impersonate a 20 kW plant. If this page already feels like too much process, you may not want an engine. Start at the station hub or home batteries. The Home Backup is not your fire marshal. Corrections: contact. How money works on this site: disclosure.
