Running Starlink on a generator safely: placement, cords and no back-feeding

You can run Starlink from a portable generator, and it’s an easy load: the Standard dish averages 75–100 W Official spec: From a Starlink specification sheet or help article. Checked Oct 5, 2026 including its router, the Mini 25–40 W Official spec: From a Starlink specification sheet or help article. Checked Oct 5, 2026. The dangers are the generator’s, not the dish’s. Run it outdoors, more than 20 feet from doors, windows and vents (CDC), never in a garage; never plug it into a house outlet; and use a heavy-duty outdoor cord. Put a power station or UPS between the generator and the dish so the internet stays up while you refuel.

Carbon monoxide: why distance matters

Generators produce carbon monoxide (CO), a gas you can’t see or smell. The CDC’s figure: more than 400 Americans die each year from unintentional CO poisoning not linked to fires, and its generator fact sheet says CO “kills without warning”.

The CDC’s generator guidance is blunt:

• “Never use a generator inside your home or garage, even if doors and windows are open.”
• “Only use generators outside, more than 20 feet away from your home, doors, and windows.” (The CDC’s main CO page adds vents.)
• Install battery-operated or battery back-up CO detectors near every sleeping area, and check them regularly.

Ready.gov gives the same 20-foot distance from windows, doors and attached garages, and adds: keep the generator dry and protected from rain or flooding, and use heavy-duty extension cords to connect appliances.

That distance is why you need a long cord, and why the cord matters.

Back-feeding: the danger you can’t see

“Back-feeding” means pushing generator power into your house wiring through an outlet, usually with a cord that has a plug on both ends. Don’t. It can send power back out onto the utility line, where line workers expect it to be dead, and it can overload your home’s wiring.

If you want the generator to power house circuits (including the outlet your Starlink normally uses), the safe route is a transfer switch or a panel interlock installed by a licensed electrician. It isolates your house from the grid while the generator runs.

For Starlink alone you don’t need any of that. Run a cord from the generator to the Starlink power supply, or to a power station that the power supply plugs into.

Cords and placement

• Use a heavy-duty, outdoor-rated extension cord, rated for the load and long enough to keep the generator at a safe distance. Starlink is a small load; the cord is about weather and wear as much as current.
• Keep the generator dry. Ready.gov: protect it from rain or flooding. Don’t run it in standing water.
• Keep connections off the ground and out of puddles. The Starlink power supply is weather-rated (The Standard power supply is rated IP66 Type 4, operating -30°C to 60°C (-22 to 140°F).) but an extension cord joint usually isn’t.
• Point the exhaust away from the house and from where people gather.
• Refuel only when it’s off and cool. Spilled fuel on a hot engine is a fire risk.

Why put a battery between generator and dish

A generator stops when it runs out of fuel, when you refuel, when it’s overloaded by something else starting, or when you shut it down for the night. Every stop drops Starlink, and a restart takes minutes to reconnect.

A power station or a UPS between the generator and the Starlink power supply fixes that. While the generator runs, it powers the dish and recharges the battery; when it stops, the battery carries on.

How long the battery covers, at the top of each dish’s average range, with our planning assumptions (85% usable, 87% through the AC outlet for the Standard, 90% on 12 V for the Mini Planning assumption: Our stated assumption, used until bench results replace it):

Even the smallest class covers a refuel. A bigger one lets you shut the generator off overnight and sleep without the noise, which also means no generator running unattended near a sleeping house.

What size generator

Starlink barely registers. The Standard’s average of 75–100 W Official spec: From a Starlink specification sheet or help article. Checked Oct 5, 2026 and the Mini’s 25–40 W Official spec: From a Starlink specification sheet or help article. Checked Oct 5, 2026 include the router and power supply. Starlink doesn’t publish a startup figure for the Standard. Size the generator for everything else you plan to run: fridge, freezer, well pump, lights, heating controls. Starlink is a rounding error on that list.

An inverter generator is the better match for electronics because it’s designed to produce cleaner, steadier power. If you have a conventional generator, the power station or UPS between it and the dish adds a buffer.

A Mini as the outage dish

If your home dish is a Standard, a Mini is worth knowing about as an outage tool: well under half the Standard’s power on Starlink’s figures, and it runs from 12–48 V DC or USB-C, so a power station’s DC port can run it all night without any generator. Our multi-day outage plan does the math, and our Mini vs Standard comparison has the numbers. Note that the Mini needs its own Starlink service plan; check what yours allows.

Common mistakes

• Running the generator in the garage “with the door open”. The CDC says never, even with doors and windows open.
• A cord with plugs on both ends. That’s a back-feed waiting to happen.
• Indoor extension cords outdoors. They aren’t made for wet ground or sun.
• No CO alarm. They’re cheap; put them near where people sleep.
• No buffer. The dish drops every time the generator stops.

What to do next

Read our outage power guide for UPS and power station options, then plan the full outage with the multi-day outage guide. For your exact hours, use the calculator with the Standard and AC selected.