Caterpillar Introduces the Web-Based Gas Engine Rating Pro

For Worldwide Release: September 2019 

Houston, Texas – Caterpillar is pleased to announce the new web-based interface for the Gas Engine Rating Pro (GERP). GERP is designed to provide site ratings for Cat® natural gas engines for the gas compression industry. For more than a decade, GERP has led the way in empowering project managers and engineers to give them precise information to control how they initiate and monitor their operations.

The new version of GERP no longer needs updating, insuring users have access to the most current product information. Dealers can easily submit special ratings requests (SRRs) directly through GERP. Additionally, users can securely share projects among customers and dealers through a CWS ID authentication. GERP can now be accessed on any device with an internet connection, including mobile devices.

“Since its introduction in 2004, Gas Engine Rating Pro has led the way in making project-specific engine information available to users in real-time, speeding completion of gas compression and natural gas-fueled power generation projects.  Moving to web access promises to continue that legacy, delivering reliable access to comprehensive engine data and enabling provisions for even more features that make gas engine project completion quicker and easier,” said Ken Hall, Caterpillar Oil & Gas Engineering Specialist.

One of the new features of GERP is improved project management. Users can now securely store and manage all project information for quick retrieval and monitor the progress of each project through status icons. This software also provides the same benefits from the previous version such as performance predictions, fuel analysis, drawings such as curves and graphs accessible through the document library, emissions predicting, and accelerated project completion timelines.

GERP is now available online and can be accessed by visiting, and logging in with a CWS ID authentication.  

About Caterpillar Oil & Gas

Caterpillar Oil & Gas, Caterpillar Inc.’s oil and gas division with headquarters in Houston, Texas, consolidates all the sales and service activities for Cat oil and gas power solutions. Since the 1930s, Caterpillar has manufactured engines for the oilfield and today provides premier power solutions with outputs from 31 to 16,000 kW.  The sales and service network includes more than 2,100 dealer locations world-wide dedicated to support customers in the drilling, production, well service and gas compression segments. More information is available at:

About Caterpillar

For more than 90 years, Caterpillar Inc. has been making sustainable progress possible and driving positive change on every continent. Customers turn to Caterpillar to help them develop infrastructure, energy and natural resource assets. With 2018 sales and revenues of $54.722 billion, Caterpillar is the world’s leading manufacturer of construction and mining equipment, diesel and natural gas engines, industrial gas turbines and diesel-electric locomotives. The company principally operates through its three primary segments - Construction Industries, Resource Industries and Energy & Transportation - and also provides financing and related services through its Financial Products segment. For more information, visit To connect with us on social media, visit

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