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Backup Generators

MASPOWER 45 KILOWATT DIESEL GENERATOR With YANMAR Diesel Engine - AllProGenerators
SAVE 11%
SAVE $4,720.00
MASPOWER 45 KILOWATT DIESEL GENERATOR With YANMAR Diesel Engine
$37,879.00 $42,599.00
MASPOWER 35KW Yanmar Generator – Diesel Backup Power | Commercial & Industrial Use - AllProGenerators
SAVE 19%
SAVE $7,710.00
MASPOWER 35KW Yanmar Generator – Diesel Backup Power | Commercial...
$32,289.00 $39,999.00
DuroMax XP28000IH 28,000 Watt Dual Fuel Inverter Generator - AllProGenerators
SAVE 11%
SAVE $900.00
DuroMax XP28000IH 28,000 Watt Dual Fuel Inverter Generator
$7,499.00 $8,399.00
Anker SOLIX Smart Generator 5500 Tri - Fuel Generator for E10 Home Backup - AllProGenerators
SAVE 31%
SAVE $900.00
Anker SOLIX Smart Generator 5500 Tri-Fuel Generator for E10 Home...
$1,999.00 $2,899.00
Briggs & Stratton 25kW Standby Generator - AllProGenerators
SAVE 24%
SAVE $3,410.00
Briggs & Stratton 25kW Standby Generator
$10,589.00 $13,999.00
Briggs & Stratton 26kW PowerProtect DX Standby Generator - AllProGenerators
SAVE 13%
SAVE $1,250.00
Briggs & Stratton 26kW PowerProtect DX Standby Generator
$8,649.00 $9,899.00
Anker SOLIX E10 Whole - Home Backup System | 6–90kWh | Outdoor Rated - AllProGenerators
SAVE 26%
SAVE $1,500.00
Anker SOLIX E10 Whole-Home Backup System | 6–90kWh | Outdoor...
$4,299.00 $5,799.00
Wildcat 15KW Frontier LPG Generator - AllProGenerators
SAVE 9%
SAVE $1,689.00
Wildcat 15KW Frontier LPG Generator
$17,310.00 $18,999.00
DuroMax XP15000HXT – 15,000 - Watt / 12,000 - Watt EFI Tri - Fuel Portable Generator - AllProGenerators
SAVE 27%
SAVE $1,300.00
Cummins 30 kW Generator – RS30 | NG/LPV | Aluminum Enclosure - AllProGenerators
SAVE 2%
SAVE $470.01
Cummins 30 kW Generator – RS30 | NG/LPV | Aluminum...
$19,228.99 $19,699.00
Maspower Yanmar 25KW Diesel Generator front view
SAVE 12%
SAVE $3,600.00
MASPOWER 25 KILOWATT DIESEL GENERATOR - Yanmar Diesel Engine
$25,899.00 $29,499.00
Yanmar 18KW Diesel Generator
Sold Out
MASPOWER 18 KILOWATT DIESEL GENERATOR with a Yanmar Engine
$23,129.00

Backup Generators for Every Type of Outage

"Backup generator" covers more ground than any other category we carry, from small battery power stations that keep a phone and a few lights running, to full standby systems that take over a home's electrical load automatically. Whatever situation you're preparing for, a backup generator exists to keep essential power flowing when the grid goes down, and the right choice depends heavily on how long you expect outages to last and how much of your electrical load actually needs covering.

Portable vs Standby: Two Different Approaches to Backup

Portable fuel generators from DuroMax and battery power stations from EcoFlow, Anker, Jackery, and Lion Energy give you flexible, movable backup that you set up and run as needed, well suited to shorter outages or situations where permanent installation isn't practical. Standby systems from Cummins, Briggs & Stratton, and Wildcat install permanently and start automatically, which matters most for buyers who want power restored without manual intervention, particularly useful if you're not always home when an outage hits. Larger diesel systems from Kubota and Yanmar extend backup capability further for properties with heavier continuous power needs.

Matching Backup Capacity to Your Actual Risk

Someone in a region with occasional short outages has very different needs than someone in a hurricane-prone area facing multi-day power loss. For the former, a smaller portable unit or battery power station often covers the need. For the latter, sizing up toward a standby system or a larger fuel generator with enough capacity for extended, unattended operation is generally the safer approach, since running out of backup capacity mid-outage is one of the more common regrets we hear from first-time buyers.

Frequently Asked Questions

What size backup generator do I actually need?

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Add up the wattage of what you'd want to run simultaneously, phones, lighting, a refrigerator, medical equipment, and compare that against a unit's continuous output rating. Light backup needs are often covered by 2,000 to 4,000 watts, while whole-home coverage typically starts around 8,000 watts for portable units or 13kW and up for standby systems.

Should my backup generator be portable or a permanent standby installation?

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If you want power restored automatically without any action on your part, especially if you travel or aren't always home, a standby system is the stronger fit despite the higher upfront cost and installation requirement. If your budget or situation calls for more flexibility, a portable fuel generator or battery power station covers most backup needs without a permanent installation.

How long can a backup generator run continuously during an extended outage?

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This depends entirely on fuel type and supply. A generator connected to a natural gas line can run indefinitely as long as gas service continues, while propane and diesel units are limited by tank size, and battery power stations are limited by stored capacity until recharged. For extended, multi-day outages, a fuel-based system with reliable fuel access generally offers the most runtime certainty.

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