What Does a Natural Gas Generator Cost and Why It’s Worth It for Backup Power

Natural gas generators are a reliable choice for industrial and commercial facilities that need consistent backup or prime power. From manufacturing plants and data centers to healthcare systems and utilities, understanding the actual cost of natural gas generators is essential for effective power planning. Costs can vary widely depending on the generator’s size, type, installation complexity, and fuel consumption. This guide breaks down all the key factors that contribute to the cost of a natural gas generator, so businesses can make informed investments.

How Generator Types and Sizes Affect Cost

One of the biggest cost variables in any generator project is the type and size of the unit. In industrial and commercial applications, the most common types are natural gas backup generators, natural gas standby generators, and natural gas-powered generators designed for continuous duty or prime power applications.

Larger facilities often require generators that run on natural gas in the 60 kW to 1,000 kW range or higher. These units are typically liquid-cooled and engineered for long runtimes under demanding conditions. By contrast, smaller generator natural gas units may serve specific load segments or act as tiered backup systems.

The larger the power requirement, the more robust the engine, fuel handling systems, and housing need to be. That complexity directly impacts the price. For broader insights on power systems, read our industrial engine pricing guide to understand how engine types and specs influence generator costs.

How Much Does a Natural Gas Generator Cost?

The upfront cost of a natural gas generator is most heavily influenced by its kilowatt output. A small commercial 30 kW unit may cost around $15,000 to $25,000. A mid-range 60 kW to 100 kW generator typically falls between $30,000 and $60,000. High-capacity models of 500 kW or more can range from $100,000 to $500,000 or higher, depending on brand, configuration, and compliance requirements.

Buyers should also consider whether to purchase new or used. Depco offers a wide inventory of used commercial-grade natural gas generators, many of which are inspected and load-tested for reliability. Choosing a used one can significantly reduce the price of a natural gas generator without sacrificing performance.

Costs also vary depending on whether a standard configuration is selected or a custom-engineered solution is required.

Installation Costs Related to Natural Gas Generators

Installation is a key part of the total investment in any generator project. For commercial sites, natural gas generator installation includes connecting to a gas supply line, installing an automatic transfer switch (ATS), laying a concrete pad, completing electrical hookups, and ensuring all systems pass code inspections.

A simple natural gas generator installation may cost $5,000 to $10,000. Larger and more complex installations can exceed $25,000. Industrial facilities that require customized gas line routing, trenching, building integration, or ventilation systems can experience even higher costs.

The natural gas generator installation cost is driven by local labor rates, distance from utility connections, control system complexity, and permitting requirements.

How Much Does It Cost to Run a Natural Gas Generator?

Once installed, the cost of running a natural gas generator becomes a long-term budget consideration. These generators draw fuel directly from a natural gas utility connection, eliminating the need for manual refueling.

Fuel usage varies by load. A 100-kW generator running at 75% capacity might consume roughly 900 to 1,200 cubic feet of natural gas per hour. Local gas rates typically range between $10 and $15 per thousand cubic feet. This places the natural gas generator cost per kWh in the range of $0.08 to $0.15, depending on generator efficiency and fuel pricing.

Natural Gas Generator Cost Calculator: Estimate Your Operating Expenses

For cost forecasting, use the interactive calculator below to estimate your expected hourly and monthly fuel costs based on your generator’s size, load factor, runtime hours, and natural gas pricing.

Keep in mind that natural gas usage varies depending on real-world factors, including generator efficiency, average load, and even temperature. While this tool provides a general baseline, your actual consumption may vary slightly depending on operating conditions and configuration.

Long-Term Generator Ownership Costs

Like any power equipment, natural gas generators require regular maintenance and service. Most manufacturers recommend scheduled service every 250 to 500 hours of operation, or semi-annually for standby units.

Typical annual maintenance costs for commercial generators fall between $1,000 and $2,000. These figures include oil and filter changes, coolant top-offs, battery checks, spark plug replacements, and diagnostic testing. For prime power applications or mission-critical loads, many companies opt for a service agreement that guarantees response time and preventive care.

While natural gas generators do not require on-site fuel storage like diesel systems, routine inspections of gas lines, regulator valves, and the transfer switch function are essential.

How Depco Helps You Maximize Value

Depco supplies new and used natural gas generators for industrial, commercial, and critical infrastructure applications. Our expert team helps clients evaluate generator sizing, fuel costs, installation needs, and long-term operational expenses to find the right solution at the right price.

For buyers looking to reduce upfront costs, Depco offers a large inventory of high-quality used generators. All used units undergo comprehensive inspection and load testing. Our clients span industries including power generation, oil and gas, healthcare, and manufacturing.

When performance, price, and support matter, Depco provides complete guidance from quote to installation.

Know the Full Cost Before You Invest

Purchasing a natural gas generator is a strategic investment in energy resilience. To plan effectively, commercial and industrial operators must consider not just the unit’s price, but also installation, fuel, and maintenance costs.

Compared to diesel systems, generators that run on natural gas offer fuel savings, longer runtimes, and cleaner emissions. By understanding the full cost picture, companies can reduce risk and improve readiness for future outages.

To get started, contact Depco. Our team is ready to help you assess your power needs and deliver a cost-effective natural gas generator solution.

Frequently Asked Questions

How much does it cost to install a natural gas generator?

Installation costs vary depending on the project scope, but most commercial installations cost between $5,000 and $25,000. Factors include gas line connections, transfer switches, concrete pads, and site-specific challenges.

How much natural gas does a generator use per hour?

Fuel consumption depends on generator size and load. A 100-kW generator operating at 75% load may use approximately 900 to 1,200 cubic feet of natural gas per hour.

What is the cost per kWh to operate a natural gas generator?

The operating cost typically falls between $0.08 and $0.15 per kilowatt-hour, depending on local fuel rates and generator efficiency.

What maintenance is required for natural gas generators?

Commercial natural gas generators require regular maintenance, including oil changes, coolant checks, spark plug replacements, and inspections. Service is usually recommended every 250 to 500 hours or semi-annually.

Is a used natural gas generator a good investment?

Yes. Used generators can significantly reduce upfront costs while still providing dependable performance. Depco’s used inventory is tested and inspected to ensure reliability and performance in industrial settings.