Rehlko gaseous generators are backup power systems that operate on natural gas or propane. They provide a reliable and efficient alternative to diesel, particularly in applications where fuel availability, emissions, or continuous operation are key considerations.
Key Takeaways
Rehlko gas generators help reduce compliance complexity because each size is available EPA-certified and engineered for current spark-ignited emissions requirements.
Flexible fuel options, including natural gas, liquid propane, and dual-fuel configurations, help maintain power continuity when site conditions or fuel availability change.
A 25–500 kW power range supports reliable standby or prime power for light commercial, industrial, municipal, and critical infrastructure applications.
Advanced controllers and remote monitoring capabilities make it easier to manage generator performance, diagnostics, and system requirements.
Quiet operation, efficient engine performance, and corrosion-resistant enclosure options help lower operating disruption and support long-term durability.

Clean operations, guaranteed.
Irrespective of its size, each Rehlko gas generator comes with an EPA certification, is managed by an Electronic Control Module (ECM), and is engineered to comply with the most recent spark-ignited emission standards. This commitment to environmental stewardship ensures cleaner, more sustainable operations.
Rehlko Generator Controllers: sophisticated simplicity.
Rehlko Generator Controllers: sophisticated simplicity.
At Rehlko, we avoid the one-size-fits-all approach. Our controllers are designed with custom packages, tailored to meet your unique requirements. Whether you require a basic controller for a single node or a more advanced system capable of paralleling multiple generators, every Rehlko controller is designed for ease of use, featuring user-friendly displays and intuitive navigation.
Additionally, all our controllers are equipped with advanced network communications for remote monitoring, alongside adjustable parameters to accommodate your specific application.


Extreme power. Maximum performance.
Extreme power. Maximum performance.
Rehlko engines are designed for efficient, low-noise operation, helping support generator longevity and fuel efficiency. These engines ensure robust performance in the most demanding conditions.
Rehlko gaseous generators are engineered to supply power to every critical application, like hospitals, gas stations, data centers, and airports. They are available in a range from 25 to 500 kW, with options for natural gas, liquid propane, and dual fuel systems.
Contact one of our authorized distributors for more information.
Rehlko Dual Fuel Gas generators.
Rehlko Dual Fuel Gas generators.
Rehlko generators provide the security of dual-fuel capability, courtesy of our patented dual fuel reset box. This innovative system enables the generator to seamlessly transition from natural gas (the primary fuel) to liquid propane (LP) and vice versa. Should the system detect a depletion in LP, it automatically reverts to the primary fuel source.
Additionally, the Rehlko dual fuel reset box can be fit with a manual switch, allowing users to manually alternate between primary and secondary fuel sources without any interruption to operations.


Power sizing program.
Power sizing program.
Need the perfect power solution? Our user-friendly sizing program, Power Solutions Center, puts the power of precision at your fingertips. This web-based tool is the ultimate solution for quickly and accurately specifying and sizing your power system. No matter where you are.
EXCLUSIVE FEATURES
Drag-and-drop load management
Automated one-line diagrams and step reports
Optimized generator set results
Comprehensive summaries, reports, and technical documents
Fast, easy estimates and information
Gaseous Generator Resources and Case Studies

Case Study
Water Utility - Pump Station
Learn how one town upgraded quiet, reliable generators for water infrastructure. Discover solutions that simplify purchasing and ensure resilience.

White Paper: Gaseous Stationary Generators
Understand the EPA gaseous emissions standards.
Power system design considerations.
Power system design considerations.
Designing power systems that meet the demand for maximal uptime requires expert focus on system architecture and equipment redundancy. Total system integration ensures that your generators, transfer switches, paralleling switchgear, and controllers are all engineered to operate together. We understand the multitude of factors you must consider, which is why we make it easy.
Contact us today and experience The Rehlko Difference.

Gas generators FAQ
What is a gaseous generator?
A gaseous generator is a backup power system that runs on natural gas or propane to produce electricity during outages or peak demand periods.
What are the benefits of gaseous generators?
Gaseous generators offer lower emissions, quieter operation, dual fuel configurations, and continuous fuel supply when connected to natural gas lines, making them a flexible alternative to diesel.
Where are gaseous generators used?
They are commonly used in commercial buildings, industrial facilities, utilities, and locations where emissions regulations or fuel availability are key considerations.
How do I determine whether an industrial gas generator is suitable for standby power at my facility?
To determine whether an industrial gas generator is right for your facility, evaluate your critical electrical loads, available natural gas or propane supply, site conditions, and applicable code requirements. Proper sizing should account for motor starting, load sequencing, future growth, and the fuel system’s ability to maintain adequate flow and pressure during an outage. Use Rehlko’s Power Solutions Center and consult a Rehlko Authorized Distributor to verify fuel availability, system design, and local requirements.
What are the advantages of a dual-fuel gas generator?
A dual-fuel generator provides greater fuel flexibility and resilience by using natural gas as the primary fuel and liquid propane as an alternate source. Rehlko’s dual-fuel system automatically transitions from natural gas to liquid propane in the event of a disruption to the natural gas supply, helping facilities maintain standby-power availability during fuel interruptions.


