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In November 2024, a bomb cyclone slammed western Washington with hurricane-force gusts, toppling trees onto power lines and cutting electricity to roughly 600,000 homes and businesses — some for the better part of a week. Washington has no single grid operator; the Bonneville Power Administration carries bulk power across the Northwest while Puget Sound Energy, Seattle City Light, Tacoma Power, and Avista run the local lines. Big Puget Sound windstorms like that one are a near-annual event. If you’re comparing Washington solar quotes, here’s what most installers skip: a rooftop system does nothing for you in that outage unless you also have storage.
The windstorm that caught Puget Sound off guard
The 2024 bomb cyclone was severe, but the pattern behind it isn’t rare. From Seattle to Tacoma, autumn and winter windstorms regularly send Douglas firs into the lines, and on the east side wildfire season adds smoke and shutoff risk across Avista and Pacific Power country. Whatever the cause, a downed line means the grid at your house is off — and a lot of solar owners are surprised to learn their panels go off with it.
Grid-tied means grid-dependent
The reason is anti-islanding, a safety feature every grid-tied inverter has. When the utility line loses voltage, the inverter must stop producing so it can’t energize a “dead” line and hurt a crew working to restore it. The upshot: even on a bright, calm morning after the storm, a panels-only system stays dark because the grid is still down. Rooftop solar shaves your bill under RCW 80.60 net metering, but it isn’t backup power.
What a portable battery backup actually covers
Two options close the gap. A whole-home battery installed with your solar is seamless but pricey, adding many thousands of dollars and weeks of permitting. A portable solar battery backup does the essential job for far less, needs no electrician, and is charged and ready the day it lands on your doorstep.
For a windstorm outage, the Solar Generator HomePower 3000 keeps the fridge, Wi-Fi, and lights on for one to two days. It runs near 30 decibels and is zero-emission, so it’s safe to run indoors with the house sealed against the wind and rain, and its included panels top it back up whenever the sky clears.
▶ See the Solar Generator HomePower 3000 use code DEAL5
To cover more of the house through a longer outage, the HomePower 3600 Plus steps up to 3,584Wh and 3,600W, expands to 21kWh, and ties into your circuits through a transfer switch.
▶ Check the HomePower 3600 Plus
The bottom line for Washington: solar lowers your bill, but only a battery keeps you running when the next bomb cyclone puts the lights out across Puget Sound. Pair panels with even a modest backup, and a multi-day windstorm outage becomes something you ride out at home.
Keep reading: Washington solar incentives & costs · Solar battery backup vs rooftop solar (Oregon) · Solar battery backup vs rooftop solar (California)