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Irvine, California  | June 23-25, 2026

Registration is open!

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Join the ETAP Nuclear Utility User Group

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25th Annual ETAP Nuclear Utility User Conference (NUUC)

A technical forum on the modeling and analysis of power systems of specific interest to Nuclear Utility Professionals

The 2026 ETAP Nuclear Utility Users Conference (NUUC) offers a technical forum for the Nuclear Utility Users Group on the modeling and analysis of power systems that is of specific interest to you as a Nuclear Utility professional. This year’s NUUC conference will be held at the ETAP Learning Center in Irvine, California (17 Goodyear, Irvine, CA 92618)

The ETAP Nuclear Utility Users Group has been established to create a discussion platform between the software vendor, ETAP® / Operation Technology, Inc. (OTI), and their clients using the ETAP software in the support of activities for nuclear power generating stations.

Conference Highlights

The purpose of the ETAP Nuclear Utility User Conference is to provide a discussion platform for its members to share and discuss items related to ETAP and the nuclear power industry.

  • Evaluate & review recent revisions to ETAP software.
  • Get answers to specific questions regarding ETAP.
  • Encourage the exchange of member experiences & ideas for the use of ETAP.
  • Share techniques & philosophies used in analyzing the auxiliary systems of nuclear power plants.
  • Learn about “Best Practices” through technical presentations, discussions & networking.
  • Network & interact with other ETAP Nuclear Users.
  • Address 10-CFR-21 from a User-perspective.
  • Enhance knowledge of power system modeling & analysis.
  • Provide consolidated and prioritized feedback information to ETAP in relation to practical operating experience from the perspective of the Nuclear Power Industry.
  • Get first-hand information about capabilities & features of upcoming ETAP releases.

Conference registration

The NUUC event is free and registration is required.

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NUUG Goals

Provide a discussion platform for its members related to ETAP solutions for the nuclear power industry

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Evaluate and review the latest ETAP enhancements

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Encourage the exchange of member experiences and ideas on the use of ETAP

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Collaborate on recommendations for future enhancements

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Address issues or deficiencies in the software discovered from user evaluation

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Provide consolidated & prioritized feedback to ETAP from members' practical operating experiences in the nuclear power industry

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Share techniques and methods used in analyzing the auxiliary systems of nuclear power plants

ETAP NUUG Executive Committee

Preston-Cooper

Chairman

Preston Cooper

TVA Nuclear

(423) 751-7697

David Dearing

Technical Chairman

David Dearing

Energy Northwest

(509) 377-8611

Pierre Fahim

Associate Chair / Secretary

Pierre Fahim

Enercon

(770) 590-2159



Learn how TVA uses Python and ETAP for degraded voltage analysis & motor starting in nuclear plants

10:29 Webinars  

Nuclear plants in the United States are governed by federal regulations requiring that the electrical power system provide sufficient capacity and capability to the nuclear plant. As part of this analysis, traditional approaches to manually perform single motor start calculations can be tedious and time-consuming. Also, the manual evaluation of the data can easily introduce errors. This presentation takes a closer look at degraded voltage relays (DVRS) and an approach to simulation used by the TVA that is holistic, using ETAP to easily combine the study cases, the revisions, and the configurations into repeatable studies. The demonstration includes the use of an efficient solution using Python code with ETAP to run the studies and evaluate the resultant data.

Online Monitoring of Nuclear Power Plant Auxiliary Power Systems using ETAP Real-Time

23:54 Webinars  
At a given nuclear power plant, nuclear safety is directly dependent on a reliable source of electric power supplied via the plant’s auxiliary power system.  The auxiliary power system typically consists of an MV and LV AC and a DC distribution system, powering thousands of individual loads and circuits, i.e., pumps, fans, valves, sensors, and controls specifically designed to protect the integrity of the nuclear reactor and containment structures.  This presentation will explore past practices and recent developments in the online monitoring of such systems using a digital twin. The presentation includes the reasons for utilizing online monitoring, the advantages of using a digital twin versus simple data collection, and the multi-faceted benefits realized from such a system (i.e., business, safety, reliability).

The Case for Online Monitoring Using ETAP Real-Time™ in a Nuclear Power Plant

19:41 Webinars  
At a given nuclear power plant, nuclear safety is directly dependent on a reliable source of electric power supplied via the plant’s auxiliary power system. The auxiliary power system typically consists of an MV and LV AC and a DC distribution system, powering thousands of individual loads and circuits. The presentation explores past practices and recent developments in the online monitoring of such systems using a digital twin. It includes the reasons for utilizing online monitoring, the advantages and benefits, i.e., business, safety, reliability.