Understanding Fuel Options for Backup Power Systems

A reliable standby generator starts with the right fuel source. Whether you’re protecting your home from unexpected outages or keeping a commercial facility powered through extreme weather or utility disruptions, choosing the right fuel type is essential for long-term performance, efficiency, and cost savings. At Ryan Electrical Solutions, we install and service generators that run on a variety of fuel sources—each with unique benefits, costs, and environmental considerations.

Below, we break down the most common fuel types available for backup generators, including natural gas, propane, diesel, and bi-fuel options, to help you make an informed decision. And if you’re not sure which one is best for your property, you can always contact Ryan Electrical Solutions. Our technicians are ready to guide you through every detail of your installation or upgrade.

A Comparison of Generator Fuel Types

Natural Gas

Natural gas is a popular choice for both residential and commercial standby generators due to its consistent availability and low operational costs. Connected directly to a municipal gas line, it eliminates the need for on-site fuel storage.

  • Efficiency: Moderate—generators running on natural gas offer reliable performance but slightly lower energy output per gallon compared to diesel.
  • Availability: Excellent in urban and suburban areas with established infrastructure.
  • Cost: Typically, lower than propane or diesel in most regions.
  • Environmental Impact: Burns cleaner than diesel and produces fewer particulates and greenhouse gases.

Best For: Properties already connected to a gas utility line, or homeowners looking for a low-maintenance, cost-effective fuel source.

Propane (LPG)

Propane is another common fuel for standby generators. It’s stored in on-site tanks and offers flexible installation in rural areas where natural gas may not be accessible.

  • Efficiency: Slightly higher than natural gas, making it suitable for long-duration outages.
  • Availability: Readily available, especially in rural areas through delivery services.
  • Cost: Typically, higher per gallon than natural gas but with better storage longevity.
  • Environmental Impact: Cleaner than diesel and considered a low-emission fuel.

Best For: Remote locations without gas line access, or sites needing larger fuel reserves for extended outages.

Diesel

Diesel-powered generators are valued for their fuel efficiency, high torque output, and reliability in commercial and industrial applications. Diesel fuel is stored on-site in tanks.

  • Efficiency: High—diesel engines provide excellent fuel economy and robust performance.
  • Availability: Easily sourced but requires proper on-site storage and safety precautions.
  • Cost: Higher initial cost, but excellent long-term performance and durability.
  • Environmental Impact: Higher emissions than propane or natural gas, though newer engines meet EPA standards.

Best For: Critical commercial or industrial facilities that demand high power output and long runtimes.

Bi-Fuel Systems

Bi-fuel generators combine the best of both worlds by operating on a blend of diesel and natural gas. These systems start on diesel and then switch to a natural gas mix, optimizing cost and reliability.

  • Efficiency: High—diesel engines provide excellent fuel economy and robust performance.
  • Availability: Easily sourced but requires proper on-site storage and safety precautions.
  • Cost: Higher initial cost, but excellent long-term performance and durability.
  • Environmental Impact: Higher emissions than propane or natural gas, though newer engines meet EPA standards.

Best For: Businesses needing extended run capability without compromising on fuel flexibility or performance.

Why Trust Ryan Electrical Solutions With Your Fuel System?

Ryan Electrical Solutions has been a trusted name in generator installation and service since 1995. We specialize in both residential and commercial applications, guiding our clients through every step—from fuel system selection and permitting to full integration and long-term maintenance. Whether you need a dedicated propane tank installed, a natural gas hookup coordinated, or a diesel storage solution engineered, our experienced Generator Team handles it all with professionalism and precision.

We also provide routine generator maintenance to ensure your backup system stays dependable year after year. Our certified technicians follow manufacturer protocols, conduct detailed inspections, and perform timely repairs, giving you confidence that your generator—and its fuel system—will be ready when you need it most.

Choosing the right fuel source is a critical step in your generator journey. Let Ryan Electrical Solutions help you make a choice that supports your energy needs, budget, and long-term goals. Contact us today to schedule your consultation.