Purchasing a New Natural Gas Generator
A Complete Buyer’s Guide for Industrial Natural Gas Generator Sets
Whether you’re purchasing your first industrial natural gas generator or expanding an existing power generation system, selecting the right equipment is one of the most important decisions your business will make. The right generator set can provide dependable service for decades, while the wrong choice can increase operating costs, maintenance requirements, and future expansion challenges.
At Generator Data, we work with businesses, electrical contractors, consulting engineers, utilities, municipalities, healthcare facilities, manufacturing plants, and data centers across the United States. Every application is unique, but the purchasing process usually begins with the same questions.
This guide covers many of the most important factors to consider before investing in a new industrial natural gas generator.
Determine Your Power Requirements
The first step is understanding how much power your facility actually requires.
Proper generator sizing involves much more than adding connected electrical loads together. Starting currents, future expansion, environmental conditions, power quality requirements, redundancy, and operating profiles should all be considered before selecting equipment.
Industrial natural gas generator sets (gensets) are available in sizes ranging from approximately 50 kW to over 4,000 kW, with multiple generators often paralleled together for larger applications requiring tens or even hundreds of megawatts.
Choosing the proper size improves fuel efficiency, operating life, and overall return on investment.
Define Your Application
Every facility has different operating requirements.
Before purchasing equipment, determine whether your generator will be used for:
- Emergency standby power
- Prime power generation
- Continuous-duty operation
- Peak shaving
- Demand response programs
- Microgrid applications
- Combined Heat and Power (CHP)
- Data center backup power
Understanding how the generator will operate helps determine the proper engine, alternator, controls, emissions package, and fuel system.
Consider Fuel Availability
Natural gas has become one of the fastest-growing fuels for industrial power generation.
Compared to diesel, natural gas offers several advantages:
- Continuous utility fuel supply
- Reduced fuel storage requirements
- Lower emissions
- Long-duration operation
- Reduced refueling logistics during extended outages
- Excellent fuel availability in many commercial and industrial areas
For many businesses, natural gas generators provide an excellent balance of reliability, operating costs, and environmental performance.
Plan for Equipment Availability
One of today’s biggest purchasing considerations is lead time.
Demand for industrial generator sets has increased dramatically due to:
- AI data centers
- Cloud computing expansion
- Utility capacity projects
- Manufacturing growth
- Critical infrastructure improvements
Depending on the manufacturer and model, lead times may vary considerably.
Working with experienced equipment suppliers can help identify available inventory, refurbished equipment, or alternative solutions that meet your project schedule.
Compare the Leading Generator Manufacturers
Generator Data works with equipment from many of the world’s leading manufacturers. Every OEM offers unique strengths depending on your power requirements, emissions regulations, service network, operating profile, and budget.
Some of the industry’s leading manufacturers include:
Caterpillar (CAT)
One of the largest manufacturers of industrial diesel and natural gas generators in the world. Caterpillar generator sets are widely used in data centers, utilities, manufacturing, mining, healthcare, and mission-critical applications.
Cummins Power Generation
Known for one of the industry’s broadest product lines, Cummins offers reliable commercial and industrial generators supported by an extensive worldwide dealer network.
Rolls-Royce mtu Onsite Energy
mtu generators are frequently specified for mission-critical applications including hospitals, government facilities, military installations, telecommunications, and large data centers.
INNIO Jenbacher
Jenbacher specializes in high-efficiency natural gas engines used for combined heat and power (CHP), renewable gas, landfill gas, wastewater treatment, and distributed energy projects worldwide.
Bergen Engines
Bergen Engines manufactures medium-speed gas and diesel engines designed for continuous-duty power generation, marine applications, utilities, and large industrial facilities.
Wärtsilä Energy
Wärtsilä is a global leader in flexible power plants using medium-speed reciprocating engines. Their solutions are widely used for utilities, grid balancing, and large-scale industrial generation.
MAN Energy Solutions
MAN manufactures medium-speed gas and diesel engines serving utility, district energy, industrial, and marine markets around the world.
MWM (Caterpillar Energy Solutions)
MWM engines are recognized for efficient natural gas generation and CHP applications throughout industrial and commercial markets.
Kohler Energy
Kohler offers commercial and industrial generator systems serving healthcare, municipalities, manufacturing, commercial buildings, and institutional facilities.
Generac Industrial Power
Generac manufactures standby and prime power generator systems for commercial facilities, telecommunications, municipalities, utilities, and industrial customers.
Siemens Energy
Siemens is a global leader in large industrial gas turbines and utility-scale power generation equipment for combined-cycle and large infrastructure projects.
Solar Turbines
A Caterpillar company, Solar Turbines manufactures industrial gas turbines for pipeline compression, LNG facilities, petrochemical plants, utility projects, and large industrial power applications.
GE Vernova
GE Vernova supplies aeroderivative and heavy-frame gas turbines used throughout utility-scale generation, independent power producers, and large industrial facilities worldwide.
Mitsubishi Power
Mitsubishi Power manufactures some of the world’s largest and most efficient gas turbines serving utilities, independent power producers, and industrial facilities.
Kawasaki Gas Turbines
Kawasaki produces industrial gas turbines for distributed generation, combined heat and power (CHP), and industrial energy applications around the world.
Evaluate Total Cost of Ownership
Purchase price is only one part of the investment.
Long-term ownership costs often include:
- Fuel consumption
- Preventive maintenance
- Major engine overhauls
- Replacement parts
- Oil and coolant changes
- Remote monitoring
- Installation
- Emissions compliance
- Service contracts
Evaluating total lifecycle cost often provides a much better comparison than purchase price alone.
Service Support Matters
Even the highest-quality generator requires periodic maintenance.
Before making a purchase, ask:
- Is factory-trained service available locally?
- Are replacement parts readily available?
- Does the supplier offer startup and commissioning?
- Can the generator be remotely monitored?
- Is emergency field service available?
- Are preventive maintenance programs available?
Reliable service support can significantly reduce downtime throughout the life of the equipment.
Plan for Future Expansion
Power requirements rarely stay the same.
If your business expects to grow, consider purchasing equipment that allows future expansion through generator paralleling, switchgear upgrades, or additional capacity.
This is particularly important for data centers, industrial manufacturing, healthcare campuses, utilities, and commercial facilities where electrical demand may continue increasing over time.
Work with Experienced Power Generation Partners
Purchasing industrial power generation equipment involves much more than selecting a generator.
Successful projects often include electrical contractors, consulting engineers, enclosure manufacturers, switchgear suppliers, fuel system specialists, transportation providers, commissioning teams, and ongoing service partners.
Generator Data’s nationwide Partner Network helps connect buyers with experienced generator dealers, service companies, electrical contractors, and power generation professionals throughout the United States.
Whether you’re purchasing a new industrial natural gas generator, evaluating used natural gas generators, or planning a complex multi-generator installation, our goal is to help connect you with experienced partners who understand every phase of the project.
Final Thoughts
Purchasing a new natural gas generator is a long-term investment in reliability, business continuity, and operational resilience.
By carefully evaluating your power requirements, fuel availability, manufacturer options, service support, operating costs, and future expansion plans, you’ll be in a much better position to select the right solution for your application.
Whether you’re installing a single generator or developing a multi-megawatt power system, taking the time to evaluate the complete project—not just the equipment—can help ensure reliable performance for decades to come.