The SOAPP team consists of EPRI personnel located in Crowley, Texas and Palo Alto, California, dedicated to the development of future releases of SOAPP software and support of new and existing customers. Resources are supplemented by highly experienced engineers and project managers in Palo Alto and specialized subcontractors.

EPRI CT Center

Want to expand your horizons?

EPRI has information about topics of interest to combustion turbine plant designers, owners and operators. Technical papers and presentations, related web sites and users groups, frequently asked questions and reference to recent EPRI CT publications are all nicely organized by general topic of interest.


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Corporate Background

SOAPP (State-of-the-Art Power Plant) software was conceived by Sargent & Lundy Engineers in 1991 in response to a request-for-proposal from the Electric Power Research Institute (EPRI) for an advanced software tool for power plant conceptual design and technology comparison. At the time, a Windows-based software tool with sensitivity to project-specific conditions was an aggressive goal for desktop computing, but computer hardware and software were anticipated that could support the robust nature of SOAPP. Initially, the software development was oriented towards pulverized-coal projects. In 1993, emphasis was placed on gas turbine projects when EPRI advisors envisioned that gas turbines would provide the majority of new electricity capacity in the next decade and that utilities and developers would gain major benefits in using such a tool.
EPRI, established in 1973 and headquartered in Palo Alto, California, manages science and technology for the energy and energy services industry worldwide ( Sargent & Lundy, based in Chicago, Illinois, has been a global leader for more than 100 years in professional services for the electric power industry (
In June 1994, SEPRIL Services, LLC, was formed with ownership split equally between EPRI and Sargent & Lundy to further commercialize the SOAPP product line. The company was led by Dale Sopocy, Stanley Pace and a Board of Directors from both companies. In 1995, Sargent & Lundy also formed a separate company, InStep Software LLC ( to provide software programming expertise, complementing the technical engineering expertise within SEPRIL. In June 1999, EPRI acquired 100% interest in SEPRIL Services, LLC and changed the name to SOAPP, LLC which became a wholly owned subsidiary of EPRI. In February 2000, the operations were merged with EPRI, resulting in the closure of the downtown Chicago office in June 2001. InStep Software LLC, Chicago, Illinois, continues to provide software programming services to EPRI in support of SOAPP products and Sargent & Lundy provides engineering support. EPRI continues to aggressively develop, distribute and support the SOAPP family of software products through its own technical personnel and sales force, providing an array of leading-edge power generation technology products and consulting services to the rapidly evolving energy industry.


The SOAPP software has been recognized both inside and outside of the power industry for its pioneering integration of multimedia content and interactive analysis, receiving the Award of Excellence and a Gold Medal from NewMedia magazine’s Invision Multimedia Awards. The SOAPP WorkStation also received an Achievement Award from the Consulting Engineers Council.

Contact Information

Electric Power Research Institute (EPRI)
SOAPP Software
3420 Hillview Ave.
Palo Alto, CA 94304


Copyright 1997, 1998, 1999 SOAPP, LLC
Copyright 2001, 2006 EPRI
SOAPP is a registered trademark of EPRI (Electric Power Research Institute, Inc.).
Products contain EPRI Technology.

Last modified: Thursday, December 28, 2006
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