Nuclear Security | Department of Energy
Source: https://www.energy.gov/topics/nuclear-security-0
Archived: 2026-04-23 17:19
Nuclear Security | Department of Energy
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Nuclear Security
Modernize America’s Nuclear Stockpile
We urgently need to modernize the nation’s nuclear weapons systems. The Department will continue its critical mission of
protecting our national security
and
nuclear deterrence in the development, modernization, and stewardship of America’s atomic weapons enterprise
, including the peaceful use of nuclear technology and nonproliferation.
Latest News
ICYMI: DOE National Lab and Nuclear Weapons Directors Voice Support for Commonsense Permitting Reforms
April 3, 2025
Secretary Wright Acts to Remove Red Tape, Accelerate Mission Execution at America’s National Weapons and Science Labs
March 27, 2025
Secretary Wright Emphasizes Importance of AI Leadership, Nuclear Modernization in Visit to Los Alamos and Sandia
February 25, 2025
View More
Video Url
NNSA
Stockpile Stewardship
Stockpile Stewardship is the comprehensive scientific and engineering program responsible for ensuring the safety, security, and reliability of the U.S. nuclear weapons stockpile in the absence of underground nuclear testing. Established in the 1990s following the U.S. moratorium on nuclear testing, this program represents one of the most sophisticated scientific endeavors in national security.
The program employs advanced computational modeling, non-nuclear experiments, and cutting-edge diagnostic tools to understand the complex physics of nuclear weapons and predict how aging affects their components. Through facilities like the National Ignition Facility (NIF), Z-machine, and supercomputing centers, scientists can simulate weapon conditions and analyze materials without conducting actual nuclear detonations.
Other Priorities
Advance Energy Addition, Not Subtraction
Increase American Energy Production
The Department’s goal will be to unleash the great abundance of American energy required to power modern life and to achieve a durable state of American energy dominance.
April 17, 2026
Energy Innovation
Driving research and development to shape the future of energy systems and technologies.
April 17, 2026
Energy Exports
Managing emergency fuel reserves to support national energy security.
April 17, 2026
Affordable Energy for Consumers
A commonsense approach that does not regulate products that consumers value out of the market; instead, affordability and consumer choice will be our guiding light.
April 17, 2026
Strategic Petroleum Reserve (SPR)
The SPR is a national asset that protects our security in times of crisis. It must be refilled.
April 17, 2026
Nuclear Energy
America must lead the commercialization of affordable and abundant nuclear energy.
April 17, 2026
Energy Reliability
Fortifying America’s electric grid is critical to the reliable and secure delivery of electricity.
April 17, 2026
Energy Infrastructure
Prioritize more efficient permitting to enable private sector investments and build the energy infrastructure needed to make energy more affordable, reliable, and secure.
April 17, 2026
Skip to main content
Official websites use .gov
A
.gov
website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A
lock
(
) or
https://
means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Nuclear Security
Modernize America’s Nuclear Stockpile
We urgently need to modernize the nation’s nuclear weapons systems. The Department will continue its critical mission of
protecting our national security
and
nuclear deterrence in the development, modernization, and stewardship of America’s atomic weapons enterprise
, including the peaceful use of nuclear technology and nonproliferation.
Latest News
ICYMI: DOE National Lab and Nuclear Weapons Directors Voice Support for Commonsense Permitting Reforms
April 3, 2025
Secretary Wright Acts to Remove Red Tape, Accelerate Mission Execution at America’s National Weapons and Science Labs
March 27, 2025
Secretary Wright Emphasizes Importance of AI Leadership, Nuclear Modernization in Visit to Los Alamos and Sandia
February 25, 2025
View More
Video Url
NNSA
Stockpile Stewardship
Stockpile Stewardship is the comprehensive scientific and engineering program responsible for ensuring the safety, security, and reliability of the U.S. nuclear weapons stockpile in the absence of underground nuclear testing. Established in the 1990s following the U.S. moratorium on nuclear testing, this program represents one of the most sophisticated scientific endeavors in national security.
The program employs advanced computational modeling, non-nuclear experiments, and cutting-edge diagnostic tools to understand the complex physics of nuclear weapons and predict how aging affects their components. Through facilities like the National Ignition Facility (NIF), Z-machine, and supercomputing centers, scientists can simulate weapon conditions and analyze materials without conducting actual nuclear detonations.
Other Priorities
Advance Energy Addition, Not Subtraction
Increase American Energy Production
The Department’s goal will be to unleash the great abundance of American energy required to power modern life and to achieve a durable state of American energy dominance.
April 17, 2026
Energy Innovation
Driving research and development to shape the future of energy systems and technologies.
April 17, 2026
Energy Exports
Managing emergency fuel reserves to support national energy security.
April 17, 2026
Affordable Energy for Consumers
A commonsense approach that does not regulate products that consumers value out of the market; instead, affordability and consumer choice will be our guiding light.
April 17, 2026
Strategic Petroleum Reserve (SPR)
The SPR is a national asset that protects our security in times of crisis. It must be refilled.
April 17, 2026
Nuclear Energy
America must lead the commercialization of affordable and abundant nuclear energy.
April 17, 2026
Energy Reliability
Fortifying America’s electric grid is critical to the reliable and secure delivery of electricity.
April 17, 2026
Energy Infrastructure
Prioritize more efficient permitting to enable private sector investments and build the energy infrastructure needed to make energy more affordable, reliable, and secure.
April 17, 2026