- By: Andrei Gorichenskii
- Reviews
- Updated: May 03, 2024
Natural Gas Generators
- Overview
- Articles
Natural Gas Generators For Sale
How They Work
Natural gas is piped into the generator, where it is mixed with air and combusted in an engine. The engine drives an alternator, which converts mechanical energy into electrical energy. The system is connected to your home or business's electrical panel, often with an automatic transfer switch that starts the generator within seconds of a power outage.
Key Advantages Over Other Fuels
Can operate without manual refueling
Produce fewer emissions than gasoline or diesel models
Run significantly quieter than alternatives
More stable pricing thanks to utility rates
Choosing the Right Natural Gas Generator
Determining Your Power Requirements
The right generator size depends on the combined wattage of the appliances and systems you need to run during an outage. Critical loads include HVAC systems, refrigeration, lighting, and essential electronics. For example, a small home might need an 8–10 kW unit, while a large property or small business may require 20–30 kW.
💡 Expert Tip: When sizing your generator, add at least 20% extra capacity to handle startup surges and future energy needs.
Portable vs. Standby Models
Cost & Efficiency Considerations
Running Costs Compared to Other Fuel Types
Natural gas prices are relatively stable and generally lower per kilowatt-hour than gasoline, making them a cost-efficient choice for long-term backup needs.
Natural gas eliminates the need for on-site fuel storage and reduces downtime risk. Lower maintenance requirements and fewer emissions contribute to cost savings over years of use, especially in standby configurations.
Installation & Maintenance Requirements
Installation Process
Installing a natural gas generator involves site preparation, acquiring necessary permits, installing a concrete pad, connecting to the natural gas line, and wiring the unit to your electrical panel with an automatic transfer switch. This process typically requires professional installation for safety and code compliance.
While natural gas generators require less upkeep than other types, routine maintenance is essential. This includes oil and filter changes every 100–200 hours of operation, spark plug inspections, and an annual load bank test to ensure full performance under demand.
🔧 Tom Burtness, P.E.: Schedule professional servicing at least once a year, even if the generator hasn't been used extensively.
"With lower operating costs, quieter performance, and minimal maintenance, they offer a cost-effective solution for both emergency and continuous use."
— Global Power Supply Engineering Team
Top Brands & Recommended Models
Leading manufacturers include Generac, Cummins, Kohler, Briggs and Stratton, DuroMax, and Westinghouse, all of which offer models ranging from small portable units to high-output standby systems.
Ready to choose your generator?
Natural gas generators deliver unmatched reliability for long-term backup power, making them a smart choice for homeowners, businesses, and contractors who require uninterrupted electricity.
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