NUUC Conference Logo-2021-w-white-Subtitle-min

Jun 22 - 24, 2021

Register for the Conference

This virtual event is free & requires a NUUG membership

ETAP users in the nuclear industry may request becoming a member below


The ETAP Nuclear Utility Users Group has been established to create a discussion platform between ETAP and their clients using ETAP solutions, supporting activities for nuclear power generating stations. The ETAP NUUG consists of members representing the common goals and needs of the nuclear power industry. Membership is open to all licensed ETAP Nuclear Users and other licensed ETAP Users associated in nuclear activities. Request to become a member.

Download the NUUG Charter

NUUG Goals

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


Evaluate and review recent revisions to the software


Allow and encourage the exchange of member experiences and ideas for the use of the program


Collaborate on recommendations for future enhancements to the software


Address errors or deficiencies in the software from user evaluation.


Provide consolidated & prioritized feedback to ETAP® in relation to practical operating experience from the nuclear power industry


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

ETAP NUUG Executive Committee



Timothy Lensmire

NextEra Energy

(920) 755-7685


Technical Chairman

Jeff Weibelt

Southern Nuclear
Operating Company

(205) 992-7649


Associate Chairman/Secretary

Preston Cooper

TVA Nuclear

(423) 751-7697

etap big daddy award

The Big Daddy Award

The “Big Daddy” Award is presented to a member who has actively contributed for many years to the ETAP NUUC.

The award recognizes the recipient’s long term contribution to the nuclear power industry by partnering with ETAP.

View Big Daddy Award winners

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ETAP NUUG Special Report

In March 2013, ETAP NUUG formed the ETAP NUUG Open-Phase Task Force, a team of power system analysis experts from Duke Energy, Enercon Services, Inc., Exelon Corp., MPR Associates, Inc., Sargent & Lundy, LLC, Southern Nuclear, and Tennessee Valley Authority (TVA).

Read full NUUG Special Report

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