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The PowerProtect PP18 gives a full 18 kW on either propane or natural gas, so you do not lose capacity when you choose one fuel over the other. Briggs & Stratton designed it to restore power automatically within seconds of an outage.
Planning a system? Read our guide: How to size a battery backup system for your home.
A strong choice for larger homes that need whole-home backup through storms and grid interruptions.
Whole-Home Backup Power You Can Trust Keep your home powered and protected through outages with the Briggs & Stratton PowerProtect™ PP18 Standby Generator. Delivering a full 18kW of backup power on either liquid propane or natural gas, this residential standby generator is designed to automatically restore power within seconds of a utility outage—helping keep essential systems like HVAC units, refrigerators, lights, sump pumps, well pumps, and appliances running without interruption. Built with Briggs & Stratton’s commercial-grade Vanguard® engine and a corrosion-resistant aluminum enclosure, the PP18 provides dependable long-term performance in a compact, quiet, and durable design. Whether you’re preparing for severe weather, protecting your home, or ensuring uninterrupted comfort for your family, the PP18 delivers automatic whole-home backup power you can count on. Key Benefits: True Whole-Home Backup Power: Delivers 18kW of standby power on both propane and natural gas to support major household loads and critical systems during outages. Automatic Power Restoration: Detects utility outages and restores backup power within seconds for seamless operation and peace of mind. Symphony® Choice Power Management – Prioritizes essential and non-essential loads to maximize generator efficiency and system performance. Durable Aluminum Enclosure – Corrosion-resistant enclosure with Dura-Zen™ coating helps protect against harsh outdoor conditions and long-term wear. Use Cases: Ideal for homeowners looking for dependable automatic backup power during storms, utility outages, and grid interruptions. Tech Specs: Output Power: 18kW LP / 18kW NG Voltage: 120/240V Split Phase Generator Breaker: 80A THD
Warranty terms mentioned in this description are the manufacturer’s. Our own coverage is the 30-day limited warranty.
We confirm compatibility, installation requirements, and delivery details with you during order review, before any payment. Home electrical work may require a qualified installer.
Our team can help you pair the PP18 with the right transfer switch for your home. Message our team on WhatsApp.
Briggs & Stratton
This PP13 bundle pairs Briggs & Stratton's 13/11.5 kW standby generator with a 100A automatic transfer switch. It suits homeowners who want hands-off backup without giving up much yard space.
$3,986.36
Briggs & Stratton
A full 22 kW on either propane or natural gas puts the PP22 in a good position for larger homes. It runs automatically when the grid goes down and keeps HVAC, well pumps and appliances going.
$4,326.14
Briggs & Stratton
Packaged as a whole-home kit, this bundle combines the PP18 generator with a 200A service-entrance-rated transfer switch and Symphony Choice power management. NGMax technology lets the PP18 hold a full 18 kW on natural gas as well as propane.
$4,745.45
Briggs & Stratton
Briggs & Stratton's PP26 is the most powerful standby generator in this group, rated at 26 kW on propane and 24 kW on natural gas. It restores power within seconds and includes a controller with scheduling and fault codes.
$4,897.16