What a shutoff actually is

Every fall we get the same call, usually the day the red flag warning hits the news. Somebody bought a generator at the hardware store on Lakeville and now wants to know how to plug it into the house. The honest answer takes a few minutes, so here it is in writing, before the wind comes up.

A public safety power shutoff is not an outage in the normal sense. Nothing broke. PG&E watched the humidity drop and the gusts climb, looked at the fuel conditions along a specific set of circuits, and cut power on purpose so a downed line does not start a fire. That is why they are unpredictable in a way storm outages are not. A tree falls, the crew comes out, power is back in six hours. A shutoff lasts until the weather passes and the whole line gets walked and inspected, and that inspection is the part that takes time.

Sonoma County catches these more than most of California because of terrain. The country west of Petaluma, out toward Two Rock and Chileno Valley, sits where the coastal gaps push wind inland hard. Add dry annual grass in October and you have exactly the profile the utility is watching. Houses in town off Washington Street often ride through untouched while a customer six miles out on a ridge road is dark for two days. Same county, same week, completely different experience.

The forty-eight hour reality

People plan for a long evening. Plan for two days instead, and think through what actually stops.

The refrigerator is first and it is not just spoiled milk. A full freezer holds temperature maybe forty-eight hours if you keep the door shut, a half-empty one closer to a day. If you have a second freezer in the garage with a summer’s worth of meat in it, that appliance alone justifies most of what we are about to talk about.

Then the well pump, which is the one that surprises new arrivals. Plenty of properties outside the Petaluma city limits are on their own well, and a well pump is not a lamp. No power means no water at all: no shower, no toilet flush, no water for animals. On a horse property that turns into a real problem by hour six.

The ladder of readiness

There are four rungs here and there is no shame in stopping on the first one. The right answer depends on your lot, your water situation, and how long you plan to stay in the house.

The bottom rung is a portable generator with a properly installed interlock kit and an inlet on the outside wall. The interlock is a small metal slide at your panel that makes it physically impossible to have the main breaker and the generator breaker on at the same time. That mechanical impossibility is the whole point. You roll the generator out, plug into the inlet, kill the main, flip the generator breaker, and turn on the circuits you want one at a time. It is the least expensive legal way to power a house and for a lot of Petaluma homes it is genuinely enough.

One rung up is a manual transfer switch, which is a small subpanel wired to a chosen set of circuits: the well, the fridge, a few lights, the furnace fan. Nothing to think about at midnight. You are trading a little flexibility for a lot of simplicity.

Above that sits a standby unit on a pad outside, on natural gas or propane, that starts itself when it senses the outage and shuts down when utility power returns. If you travel, if you are on a well, or if somebody in the house depends on power for their health, this is the rung that earns its keep. We walk through the whole thing on our generator installation page for Petaluma.

The fourth rung is a battery, usually paired with solar. Silent, no fuel, no maintenance, and it will cover a fridge and lights all night without a sound. But a battery is a tank, not a well. If the shutoff runs into a second cloudy day and your panels are underproducing, you ration. Batteries and generators solve different halves of the same problem, and plenty of the nicer properties out toward Sonoma Mountain end up with both.

The one thing that gets people killed

You will find videos showing a cord with male plugs on both ends, running from a generator into a dryer outlet or a wall receptacle. It is called backfeeding. Do not do it.

Sizing it honestly

Most people either buy far too much generator or buy one that will not start their well pump. Both are avoidable with an afternoon of arithmetic.

Bigger is not automatically better. A large generator running a nearly empty load burns fuel inefficiently and wet-stacks the engine over long hours, which is exactly the condition a multi-day shutoff creates.

Fuel is the part people forget

A portable running a fridge, a well, and some lights burns roughly a gallon of gasoline every hour or two depending on load. Two days of that is real volume, and on day one of a shutoff every station from Petaluma up to Cotati has a line, because the pumps themselves need power. Whatever fuel you have when the lights go out is generally the fuel you have.

So: store what you can safely and legally, in proper cans, away from the house, and rotate it with stabilizer so you are not pouring last summer’s varnish into a cold engine. Propane keeps for years, which is one honest advantage of a dual-fuel portable. And if you are on a propane tank already, a standby unit that just taps into it sidesteps the whole problem.

Test in August, not in October

The failure we see most is not a wiring failure. It is a generator that sat in the shed for eleven months with old gas in the carburetor and will not start on the night it matters.

Ten minutes in August is worth more than any amount of planning in October. If you would rather have someone walk the panel with you and lay out which of the four rungs actually fits your property, reach out and we will come look. Owner-operated means the person who answers is the person who shows up, and we would rather size it right in the quiet season than improvise in the wind.