Why this page has no dollar figures
Standby generator cost varies by a factor of several across the United States, driven by things no web page knows about your house.
A quote depends on your local labor rates, your permit authority, the distance from the pad to the panel, whether a gas line already reaches the spot, the size and condition of your electrical service, your local code requirements, and current equipment availability.
Any site quoting you a single number is either describing one installation in one market or making it up. What is useful — and what follows — is knowing what the quote is made of, so you can compare two of them and see which line items are doing the work.
What a standby quote actually contains
| Line item | Share of the total | What moves it |
|---|
| The generator itself | Often under half | Kilowatt rating, air-cooled versus liquid-cooled, brand |
|---|
| Automatic transfer switch | Significant | Whole-panel versus essential-circuits, amperage |
|---|
| Electrical labor and wiring | Significant | Distance from pad to panel, whether the run is buried |
|---|
| Gas or propane connection | Variable, sometimes large | Whether a line reaches the pad; meter upgrade if not |
|---|
| The pad | Small | Composite versus poured concrete |
|---|
| Permits and inspection | Small but mandatory | Your jurisdiction |
|---|
| Service panel upgrade | Occasionally the largest surprise | An old or undersized panel |
|---|
Two things follow from that table. The machine is frequently the smaller half of the project, and the surprises are on the infrastructure side — a gas line that has to be extended, a meter that has to be upsized, or a panel that needs replacing before anything else can happen.
The three questions that move the number most
1. How far is the pad from the panel and the gas line? Conduit, trenching and pipe are priced by the foot. Siting the unit twenty feet from both rather than sixty changes the quote materially, and it is one of the few variables you control.
2. Whole panel or essential circuits? A whole-house automatic transfer switch backing everything is meaningfully more than an essential-circuits switch covering ten. It also drives the generator size up, which compounds — the sizing page covers that exercise.
3. Natural gas or propane? If a gas line already reaches near the pad, that is the cheap answer. Propane means a tank, a pad for it, a regulator and a delivery relationship — the fuel comparison covers the trade, and the tank sizing page covers how big it needs to be.
The costs that continue
A standby generator is not a one-time purchase, and this is the part most quotes present quietly.
- Annual service. Oil, filters, plugs and an inspection, typically yearly or on an hour count — the maintenance page sets out what it involves.
- The exercise cycle. The unit runs itself weekly or biweekly for ten to twenty minutes, burning fuel every time. Over a year that is a real gas bill line for a machine that has produced no useful power.
- The starting battery. Three to five years, usually excluded from warranty as a consumable.
- Fuel during an actual outage. On natural gas this is metered like anything else. On propane it is a delivery, at whatever the market rate is that week.
- Service plans. Optional, and worth reading carefully — the warranty page covers what they typically do and do not include.
Reading two quotes against each other
The useful questions to ask every installer, so the comparison is like for like.
- What kilowatt rating, and sized how? A dealer should be able to show the load calculation rather than a rule of thumb.
- Whole panel or how many circuits? Two quotes for different switch types are not comparable.
- Is the gas connection included, and does it assume an existing line? This is the commonest place a quote grows later.
- Is a panel upgrade included or excluded? Get it in writing either way.
- Who pulls the permit, and is the fee in the number?
- What is the warranty, in hours and years, and what is excluded?
- What does year-one and year-two service cost?
Where the money actually goes furthest
Being blunt, because this page exists to help people spend well rather than spend more.
For a household with a few short outages a year, a 7,500W portable plus a manual transfer switch covers the same circuits for a fraction of the total, and the ongoing cost is a few hours of maintenance a year.
Standby earns its price in three situations: outages that last days rather than hours, a house that is regularly empty or occupied by someone who cannot operate a generator, and a property where a well pump means an outage removes water. The worth-it page works through that decision properly.
The short version
- The machine is often under half the project. Installation is the rest.
- Pad-to-panel distance and the gas connection move the number most.
- Budget the ongoing costs — service, exercise fuel and a battery every few years.
- Get quotes that specify the same switch type or they are not comparable.
