Hunt & Live

Q&A · Off-Grid

How Long Can You Store Fuel for Your Standby Generator?

April 5, 2026

Quick Answer

Fuel for a standby generator can be stored for up to 2 years, depending on the type of fuel and storage conditions. Most gasoline and propane generators require proper storage to maintain fuel quality and prevent degradation. Regular maintenance and inspections are crucial to ensure the generator operates efficiently and safely.

Choosing the Right Fuel Storage Container

When it comes to storing fuel for your standby generator, selecting the right container is crucial. Look for containers specifically designed for storing fuel, such as steel or polyethylene tanks. These containers are designed to prevent leaks and spills, and come in various sizes to accommodate different fuel quantities. A general rule of thumb is to use a container that is at least 5-10 gallons larger than the generator’s fuel capacity. For example, if your generator holds 20 gallons of fuel, consider a 25-30 gallon container.

Storage Conditions and Maintenance

Regardless of the container, proper storage conditions are essential to maintaining fuel quality. Store the container in a well-ventilated area, away from direct sunlight and heat sources. Keep the container off the ground to prevent water accumulation and damage. Regularly inspect the container for signs of leaks, rust, or damage. Also, check the fuel level and add fuel as needed to prevent moisture buildup and contamination. It’s also essential to follow the manufacturer’s recommendations for fuel storage and handling.

Generator Maintenance and Inspection

In addition to proper fuel storage, regular generator maintenance and inspection are crucial to ensure it operates efficiently and safely. Check the fuel system, air filter, and spark plug for signs of wear or damage. Clean or replace these components as needed to prevent engine problems. Also, follow the manufacturer’s recommended maintenance schedule for oil changes, filter replacements, and other critical tasks. A well-maintained generator will perform optimally, run more efficiently, and last longer.

generator-whole-house-standby long store fuel standby generator
Share

Find more answers

Browse the full Q&A library by topic, or jump back to the topic this question belongs to.