Power Outages in California: Backup Power Guide with a Portable Power Station

This guide is based on public information and manufacturer specifications. We do not claim hands-on testing. For emergency instructions, always follow your local emergency management office, the National Weather Service and Ready.gov.

California utilities sometimes shut off power during high fire danger, and heat waves and winter storms can also cause outages. A power station keeps essentials running.

What can cause outages in California

• Planned power shutoffs during high fire danger
• Wildfire damage to infrastructure
• Heat waves that strain the grid
• Winter storms and high winds

What a portable power station can cover

A portable power station is well suited to short and medium outages: keeping a router, phones, lights and a laptop going, running a fan, and keeping a refrigerator going for part of the day on a larger unit. Heating, cooking and central air conditioning usually need much more power. See can a power station power a house.

How to size one

1. List your essential devices and their watts.
2. Estimate the hours you want to cover.
3. Use our sizing guide or runtime calculator.

Many households start with a 1,000 Wh class unit for essentials and add solar to recharge. See how many solar panels you need.

California tips

Sign up for your utility’s alerts so you know about planned shutoffs, and keep the power station charged during fire season. Solar panels can help recharge during longer shutoffs.

Where to find official information

• Your electric utility’s outage map and alerts
• The National Weather Service forecast for your area
• Your state and county emergency management office
• Ready.gov for preparedness checklists
• The U.S. Energy Information Administration (EIA) for reliability data

Safety reminders

• Never run a gas generator indoors or in an attached garage.
• Do not back-feed your home through a wall outlet.
• If you rely on medical equipment, follow the equipment maker’s guidance and talk to your healthcare provider.

Frequently asked questions

How long can a power station run my essentials?

It depends on capacity and load. Divide usable watt-hours by your total watts to estimate hours.

Should I buy before a storm is forecast?

Yes if you can. Supplies and delivery can be limited right before a storm. See the hurricane power outage checklist.

Medical equipment: if you plan to run a CPAP machine or other medical equipment from a portable power station, check the device manufacturer’s guidance first and keep a backup plan. A power station is not a medical-grade or guaranteed uninterruptible power source, and this guide is not medical advice.

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