Lauren HollandBy Lauren Holland

Updated November 2026

A Goal Zero solar power generator can run small household loads like phone chargers, LED lights, a Wi-Fi router, and a laptop during an outage, and it can recharge from solar panels or a wall outlet. Whether it can run your fridge, CPAP, or sump pump depends on the device’s wattage, its surge demand, and how many watt-hours of stored energy it holds. Check those numbers before you buy.

Why Goal Zero Systems Are Sized Differently Than Many Expect

Goal Zero makes portable power stations built around lithium batteries, and the company sells them in a range of capacities, from small units for phones and lights up to larger models meant for whole-room backup. Owners often report that the biggest surprise is not the battery size but the inverter rating, which caps how much power can flow out at one time. A unit can hold plenty of energy and still refuse to start a refrigerator compressor if the inverter is too small for the motor’s startup surge.

Shopping for one? See our guide: Jackery Solar Generator Home Power 3000: 4 Best Options Compared (2026).

If you are comparing a Goal Zero system with another brand, the same math applies to all of them. For a refresher on why starting loads behave differently from running loads, see Surge vs Continuous Power: What Your Solar Generator Can Actually Start.

The Factors That Decide What a Goal Zero System Can Run

Three numbers matter most:

  • Stored energy (watt-hours, Wh): This sets how long a load can run. A 500 Wh battery supplying a 50-watt load lasts roughly 10 hours before losses, since 500 divided by 50 is 10.
  • Continuous output (watts): This is the steady load the inverter can supply. Your devices’ combined running wattage must stay below it.
  • Surge rating: Motors such as refrigerator compressors and sump pumps can briefly draw several times their running wattage on startup.

To estimate loads, read the label on each appliance (watts or amps times volts) or use a plug-in meter. For a step-by-step method, see How to Measure Appliance Power Consumption for Solar Generator Sizing.

What to Do Before You Rely on a Goal Zero System

  1. List the devices you need during an outage and note each one’s running and starting watts.
  2. Add up the running watts and confirm the total is below the unit’s continuous output rating.
  3. Check the surge rating against your largest motor’s startup draw.
  4. Divide the battery’s watt-hours by your daily load to estimate runtime, then allow for conversion losses.
  5. Test the setup once at home with the devices you plan to run before an emergency.

For a broader planning process, read Using a Solar Generator During a Power Outage: A Practical Plan.

Medical and Sump Pump Loads

A CPAP machine is a light load compared with a refrigerator, but it still has to run through the night. Calculate its watt-hours for the full night and check the unit’s runtime. A detailed walkthrough is in Using a Solar Generator or Power Station for a CPAP Machine. If anyone in your home depends on powered medical equipment, consult your equipment provider or physician before relying on any backup system.

What We’d Use

For a compact backup that handles phones, lights, and a router, look at a small Goal Zero Yeti portable power station. View on Amazon

For a larger battery intended to cover a fridge and essentials for longer, consider a bigger Goal Zero Yeti model with a higher inverter rating. View on Amazon

FAQ

Can a Goal Zero solar power generator run a refrigerator?

It can, but only if the inverter’s continuous output and surge rating both exceed the fridge’s running and startup wattage, and the battery holds enough watt-hours for the outage length. Check the appliance label and the unit’s specifications.

How long will a Goal Zero system run a CPAP?

Multiply the CPAP’s average watts by hours of use to get watt-hours needed, then compare that to the battery capacity after conversion losses. Confirm the figure with your device’s manual and your equipment provider.

Do I need solar panels with a Goal Zero system?

Not always. A wall outlet can recharge the battery, but solar panels let you extend runtime during a long outage when the grid is down. Check the charging options listed for the specific model you are considering.

Ready to choose one?

Lauren Holland

About Lauren Holland

Lauren Holland is part of our editorial team and reviews and edits our solar generators for home backup & emergencies guides, checking product details against manufacturer specifications and owner feedback.