Power Uprates

MUR ≤ 2% Measurement Uncertainty Recapture • Improved measurement accuracy • Reduced uncertainty margins • Minimal plant modifications

SPU 2 - 7% Stretch Power Uprate • Uses existing design margin • Limited modifications • Instrumentation adjustments

EPU > 7% Extended Power Uprate • Significant power increase • Major equipment modifications • Balance-of-plant upgrades

Quick Links

Power Plant Uprate Database (PPUDB)

Research

Meetings

Workshop Material

Future Meetings

📅 Upcoming Activities TAG Meeting First Wednesday of every month 1:00 PM Eastern 2026 Power Uprate Workshop 9-11 September 2026 Charlotte, North Carolina Need an invite? Contact PUR PM

Industry Documents for Power Uprates

EPRI Research

Product ID	Title	Description
3002025839	Power Uprate Supplmental Project Notice	Overview of what to expect from the Supplemental
3002026402	Facilitating Power Uprates at Nuclear Power Plants: Feasibility Study Guideline	An enhanced and updated methodology for performing the feasibility study of nuclear power plant power uprates.
3002035186	Power Uprate Margin Management Assessment (PUMMA) Tool v1.0	An Excel-based tool for users to provide structured inputs on qualitative assessments of margin before and after a power uprate
3002030461	EPRI Power Plant Uprate Database (PPUDB) v1.0	OE database of Power Uprates. Contains over 500 OE and we encourage everyone to add their experiences to benefit others.
3002035182	Assessment of the Status of International Extended Power Uprates	An overview of what is happening for power uprates outside of the United States

NRC approved EPRI Topicals

Product ID	Title	Description
3002018337	Use of Data Validation and Reconciliation Methods for Measurement Uncertainty Recapture: Topical Report, Revision 0-A	Establishes the technical basis for DVR for MUR uprates and perform related evaluations to substantiate the uncertainty claims of the DVR process.
3002035151	Loss-of-Coolant-Accident-Induced Fuel Fragmentation, Relocation and Dispersal with Leak-Before-Break Credit: Alternative Licensing Strategy (3002028673-A)	Provides a pathway for an individual plant licensee to request license amendments to address LOCA-induced FFRD in high burnup fuel. The proposed methodology supports the transition for the bulk of the PWR fleet to higher burnup and also provides a pathway to apply this approach to PWRs that are not specifically evaluated in this report.
3002035149	LOCA Analysis of Fuel Fragmentation, Relocation, and Dispersal for Westinghouse 2-Loop, 3-Loop, and 4-Loop Plants: Non-Proprietary-A
3002035150	LOCA Analysis of Fuel Fragmentation, Relocation, and Dispersal for Westinghouse 2-Loop, 3-Loop, and 4-Loop Plants: Proprietary-A
3002036275	Materials Reliability Program: xLPR Estimation of PWR Loss-of-Coolant Accident Frequencies (MRP-480-A)

Other Related EPRI Research

Product ID	Title	Description
3002013197	Guidance for Implementing a Data Validation and Reconciliation Program at Nuclear Power Plants	Provides research and guidance for a plant to evaluate and implement DVR Methods contained in the German standard, VDI-2048, to monitor core thermal power
3002018588	Improving Heat Rate Calculations	Explores the use of DVR for heat rate monitoring with a focus on the reduction of heat rate uncertainties that DVR may permit
3002032144	Steam Generator Management Program: Calculating Primary-to-Secondary Leakage After an Accident Condition: Upper Bound Faulted Leak Rate as a Function of Operational Leakage	Presents the results of an investigation using an advanced probabilistic model to assess anticipated leakage under a range of accident conditions if the accident condition was entered while a measurable operational primary-to-secondary leakage was occurring

Other Industry Documents

Report Number	Title	Description
NEI 08-10	Roadmap for Power Uprate Program Development and Implementation, Rev 0, July 2009	Provides guidance intended to promote excellence in executing power uprates at commercial operating nuclear power stations
IAEA NP-T-3.9	Power Uprate in Nuclear Power Plants: Guidelines and Experience	Options for uprating the power level and information on current trends, licensing aspects, monitoring, lessons learned from many countries and verification technology.
INPO 09-003	Systematic Management of Design and Operating Margins	Provides guidance for member utilities in identifying, evaluating, prioritizing, and resolving margin concerns
INPO 09-005	Power Uprate Implementation Strategies – A Leadership Perspective	provides implementation insights and practical examples of how stations have achieved excellence during the development and installation of power uprate projects
GE NEDO-32424 (ML102220442)	Generic Guidelines for General Electric Boiling Water Reactor Extended Power Uprate	Presents the generic criteria, methodology and scope of evaluation required to provide sufficient information for use by the Nuclear Regulatory Commission (NRC) to grant approval to anticipated specific applications for increases in the authorized thermal power level (power uprate) of GE Boiling Water Reactors (BWRs). This document covers uprates up to nominally 20% of the original licensed thermal power
GE NEDC-32523P-A	Generic Evaluations of General Electric Boiling Water Reactor Extended Power Uprate	Contains generic bounding analyses and equipment evaluations in support ofextended power uprate (up to 20 percent increased core thermal power) for boiling water reactors (BWRs)
GE NEDC- 33004P-A	Constant Pressure Power Uprate Licensing Topical Report	An approach to uprate reactor power that maintains the current plant reactor dome pressure
WEC NS-ES-0020	Uprating Programs	Westinghouse's 3-Phase process for Power Uprates
US NRC RS-001	Review Standard for Extended Power Uprates,	Provides guidance for the Nuclear Regulatory Commission (NRC) staff’s review of extended power uprate (EPU) applications to enhance consistency, quality, and completeness of reviews

Past Workshop Materials

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2025 Workshop