How Do I Keep the Power On During an El Niño Winter in Humboldt County?

November 6, 2026

By Six Rivers Solar

How Do I Keep the Power On During an El Niño Winter in Humboldt County?

Winter outages in Humboldt County mostly come from wind, saturated ground and falling trees on long rural distribution lines, plus the few transmission lines that feed the county along the Highway 36 and 299 corridors. Grid-tied solar shuts off when PG&E fails, so staying powered takes a battery, a generator, or both, sized to the circuits you truly need.

NOAA's Climate Prediction Center issued an El Niño Advisory on June 11, 2026. By its October 8 update, central Pacific sea surface temperatures were 2.1 degrees Celsius above normal and the odds of a strong-to-very strong event lasting through January to March 2027 stood above 83 percent. This winter's El Niño may exceed every event on record since 1950.

Humboldt County has lived through two of the giants. The 1997-98 event followed a New Year's week in which the Eel River flooded at Ferndale and Scotia, every highway out of the county closed, and thousands of homes lost power. The 2015-16 event was billed as the big one and mostly fizzled; Eureka finished at about 120 percent of average rainfall. Two super El Niños, two very different winters. That is the honest shape of the forecast.

So picture the night the storm comes. Rain since Tuesday. The ground on Humboldt Hill has gone to soup. Around nine the wind swings south, the lights flicker twice, and the house goes quiet: no refrigerator hum, no furnace blower, no router light. The PG&E outage map shows a red blob over half the county and an estimate that reads "to be determined." Somewhere between Bridgeville and Cottonwood, a Douglas fir is lying across a 115 kV line, and nobody will reach it until daylight.

Why does Humboldt County lose power so often in winter?

Humboldt loses power because it sits at the end of a few long wires strung through steep, wet, forested country. The county is tied to the California grid mainly by the Bridgeville-Cottonwood 115 kV line along Highway 36 and the Humboldt-Trinity 115 kV line along Highway 299. A 60 kV line runs south from Bridgeville to Garberville. The state grid operator's planning studies for the area dwell on what happens when one line fails while another is already out, and in several scenarios the answer is overloads or voltage collapse.

Below that, the distribution lines that reach your house run for miles through redwood and fir along Alderpoint Road and the Mattole Road. When inches of rain soak the soil and a 60 mph gust arrives, root systems let go. PG&E called the December 2021 storm the worst tree damage it had seen in 15 years: more than 6,000 Humboldt customers out, both lines feeding Garberville damaged, and Willow Creek, Hoopa and Petrolia waiting days for a restoration estimate.

The December 20, 2022 Ferndale earthquake showed the same fragility without weather. At 2:34 in the morning, a magnitude 6.4 quake knocked more than 70,000 customers off the grid, most of the county. PG&E's estimate for restoring Eureka, Arcata and McKinleyville was 10 p.m. that night; Southern Humboldt had no estimate at all. When something big trips the Humboldt system, there is no neighboring grid to lean on.

Last December's pre-Christmas storms cut power to more than 125,000 PG&E customers across Northern California, with a 109 mph gust measured near Humboldt.

What does a strong El Niño mean for this winter?

For Humboldt, a strong El Niño raises the stakes of each storm that arrives while leaving the number of storms an open question. Strong events tilt the odds toward a wet Southern and Central California. The North Coast sits in what Cal Poly Humboldt geologist Lori Dengler calls a transition zone, where El Niño winters have come in both wet and dry; her closest local analog is 1982-83, when bluffs at Big Lagoon retreated about 55 feet.

Two things are fairly dependable. Warmer ocean water raises sea level a little, which worsens king tides, bay-side flooding in Eureka and Arcata, and bluff erosion. And a warmer atmosphere lets each atmospheric river that reaches the North Coast drop more water in less time, the recipe for saturated ground and falling trees. The forecast is a probability. Prepare for the storms Humboldt gets every winter and accept that this year the big ones may be bigger.

Do solar panels work during an outage?

A standard grid-tied solar system shuts down the moment PG&E power fails, even at noon on a clear day. Inverters must stop exporting when the grid goes down so that line workers are not energized by thousands of rooftops. To use your panels during an outage, you need a battery or hybrid inverter that can form its own small grid for the house. The mechanics are in Do Solar Panels Work When the Power Is Out?.

What actually needs to run? Building a critical-loads list

The cheapest reliable backup plan starts with a short list, because most of a house does not need to be on during a storm. Walk the house and sort loads into "must," "nice" and "wait for PG&E." Rough figures, for planning only:

Refrigerator or freezer: 100 to 200 watts running, a brief 600 to 1,200 watt surge at startup, 1 to 2 kilowatt-hours a day.
Well pump: 750 to 1,500 watts running, two to three times that on startup. Much of Fieldbrook, Freshwater and Southern Humboldt has no water without one.
Heat: a propane furnace blower needs 400 to 800 watts, a pellet stove 100 to 400. A heat pump can draw 2,000 to 4,000 watts and is usually the first thing to trim in a long outage.
Medical devices: a CPAP runs 30 to 60 watts; an oxygen concentrator 300 to 600 around the clock. These go at the top of the list. See The Best Battery Backup for Home Medical Equipment.
Internet and phones: 20 to 60 watts, and the only way to see the outage map.
Sump or septic lift pump: 800 to 1,500 watts, intermittent, non-negotiable in a flood week.

A set like this averages 400 to 700 watts, call it 10 to 16 kilowatt-hours a day. That number is the whole design problem.

Battery, generator, or both?

For most Humboldt homes, the answer is a battery sized for the critical list, with a generator in reserve for the third or fourth gray day. A 10 to 15 kilowatt-hour battery carries the list above through a night, switches over in a fraction of a second, makes no noise and needs no fuel. When the clouds break, the panels recharge it; even a thin winter sun puts several kilowatt-hours back into a battery that is only running a refrigerator, a pump and lights.

Generators win on upfront cost and on the rare week when the sky never clears. They lose on fuel, maintenance, noise, carbon monoxide risk, and the fact that in a Humboldt storm the road to the gas station is often the road the trees fell across. Highway 101 at Richardson Grove closes often enough that "I will just buy more gas" is a weak plan for Southern Humboldt. A generator that tops off a battery for two hours and shuts down is the best use of one.

The full comparison, with costs, is in Solar Battery vs. Generator.

[SRS INPUT: one or two sentences on a Six Rivers customer whose battery carried them through a multi-day Humboldt winter outage, with town and approximate duration.]

A storm checklist for homes with and without solar

Everyone, before the first big storm:

Sign up for PG&E outage alerts and keep a battery bank charged.
Store three days of water and food per person, two weeks if you live past the end of a long road.
Fill prescriptions. If anyone depends on a medical device, enroll in PG&E's Medical Baseline program and plan where you will go if backup runs out.
Trim limbs near the service drop. Clean gutters and check the driveway culvert.
Keep the gas tank above half. Flashlights in each bedroom, no candles.

Homes without solar:

Test-run the generator in October.
Have an electrician install a transfer switch. Never plug a generator into a wall outlet.
Run it outdoors, 20 feet from the house, never in a garage, with a working carbon monoxide detector inside.

Homes with solar and a battery:

Check that the app shows a full charge and a storm reserve is set so the battery does not drain into normal evening use.
Know which breakers are on the backup panel, and tell the family what will and will not work.
Turn off the heat pump and electric water heater early in a long outage unless the battery was sized for them.

After the storm: checking panels, mounts and debris

Once the wind quits, look up from the ground and leave the roof alone. A wet composition roof is one of the easiest ways to get badly hurt in Humboldt County, and a wet metal roof is worse. From the yard, look for shifted panels, a bent rail, dangling wire, or branches on the array. Then open the monitoring app and compare production with a recent clear day. A dead string shows up there first.

Needles and leaves wash off in the next rain. A broken branch resting on the glass is different, because its weight shifts with every gust. Do not go up to move it. Call your installer, who has the harness, the ladder standoffs and the habit of doing this on wet days. If a limb hit the service line between the pole and the house, treat it as live and call 911, then PG&E at 1-800-743-5002.

Frequently asked questions

How long will a home battery last in an outage?

It depends on what you ask it to run. A 13.5 kilowatt-hour battery feeding a refrigerator, well pump, furnace blower, internet and lights typically lasts 18 to 30 hours with no sun. Add a heat pump and that drops to a few hours. With panels recharging it by day, a trimmed critical-loads list can run through a week of broken clouds.

Can I run a generator with my solar?

Yes, if the system is designed for it. Most hybrid inverters have a generator input that lets a portable or standby generator charge the battery and carry loads while the solar keeps working. A generator cannot share a bus with a grid-tied inverter without that equipment, so settle the design with your installer before the season.

Should I clean my panels after a storm?

Usually no. Rain is the best panel cleaner on the North Coast, and winter storms leave arrays cleaner than they were in September. Remove a branch that stays put from the ground with a soft pole if it is within reach; otherwise call the installer. Never walk a wet roof to wipe glass.

Does PG&E compensate for long outages?

Sometimes. PG&E's Safety Net program pays residential customers an automatic bill credit when a storm-caused outage lasts 48 consecutive hours or more: $25 for 48 to 72 hours, rising in $25 steps to a $100 maximum past 120 hours. It excludes Public Safety Power Shutoffs, earthquakes, wildfires, and areas where slides blocked crews. The credit appears 45 to 60 days later. Spoiled food goes through a separate claims process.

The night the lights go out

Back to that Tuesday night on Humboldt Hill and the fir across the line up Highway 36. In one version, the house is dark and cold and the freezer is on the clock. In the other, the router blinks back on in half a second, the refrigerator picks up its hum, and the family goes to bed while the battery carries a short list of circuits toward morning. Same storm, two houses. The planning was different.

If you want help building a critical-loads list, or want to know what a battery sized for your house in Eureka, Fortuna or Willow Creek would cost, Six Rivers Solar has done this on the North Coast for 45 years. Call 707-443-5652 or request a quote.