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    • Policy & Priorities
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    • Increase American Energy Production
      Expanding domestic energy resources to support national needs and economic growth.
    • Energy Innovation
      Driving research and development to shape the future of energy systems and technologies.
    • Energy Exports
      Supporting global energy markets through U.S. energy production and trade.
    • Affordable Energy for Consumers
      Promoting access to reliable and cost-effective energy for households and businesses.
    • Strategic Petroleum Reserve (SPR)
      Managing emergency fuel reserves to support national energy security.
    • Nuclear Security
      Maintaining the safety, security, and effectiveness of the nation’s nuclear deterrent.
    • Nuclear Energy
      Advancing nuclear technologies to support energy, security, and innovation goals.
    • Energy Reliability
      Ensuring consistent and dependable energy delivery across the nation.
    • Energy Infrastructure
      Strengthening and modernizing the systems that produce, deliver, and store energy.
    • Leadership & Organization
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    • Chris Wright
      Chris Wright
      Secretary of Energy
      James Danly Deputy Secretary of Energy Headshot
      James Danly
      Deputy Secretary of Energy
    • Leadership & Organization Pages
      • Staff Offices
        Supporting DOE operations through policy, administration, and mission services.
      • Science and Innovation Program Offices
        Leading scientific research and technology development across priority areas.
      • Independent Offices
        Providing oversight and specialized functions across key areas of the Department.
      • Energy Program Offices
        Managing programs that support energy production, efficiency, and delivery.
      • National Laboratories
        Advancing research and innovation through DOE’s National Laboratory System.
      • Nuclear Security Offices
        Overseeing national security efforts related to nuclear safety and defense.
    • Featured
      Hydrocarbons and Geothermal Energy Office
      Hydrocarbons and Geothermal Energy Office
    • Topics
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    • Energy Sources
      Learn about the resources and technologies used to produce power across the United States.
    • Energy Usage
      Explore how energy is consumed in homes, businesses, transportation, and industry.
    • Policy
      Understand the laws, regulations, and strategies that guide energy decisions and national priorities.
    • Science & Innovation
      See how research, discovery, and new technologies are shaping the future of energy.
    • Economy
      Discover how energy affects jobs, markets, investment, and economic growth.
    • National Security & Safety
      Learn how energy systems support resilience, infrastructure protection, and public safety.
    • News & Events
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    • Press Releases
      August 14, 2026
      Hydrocarbons and Geothermal Energy Office Announces Up to $10.75 Million to Support University Training and Research for Subsurface Energy Development
      HGEO announced up to $10.75 million for U.S. colleges and universities, through its… Read more
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    • Fact Sheets
      FACT SHEET: The Golden Era of American Nuclear Energy Has Arrived
      Fact Sheet: Operational Closure of Radioactive Liquid Waste Tanks
      Fact Sheet: Liquid Waste Tank Farms
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    • Upcoming Events
      Aug 17
      1:00PM EDT - 2:00PM EDT
      Fundamentals of Next Generation Geothermal Technology for Power Generation
      Aug 20
      6:30PM EDT - 8:00PM EDT
      Paducah EM SSAB Meeting (August 2026)
      Aug 18
      8:00AM EDT - 5:00PM EDT
      2026 Electromagnetic Transient (EMT) Simulation Workshop
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    • About
    • Mission
      Supporting USA energy, science, and security priorities.
    • History & Achievements
      • Nobel Prize Laureates
    • Contact Us
      Access general information and ways to connect with the Department of Energy.
    • Careers
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Funding Opportunities

DOE Explains...

Scientific terms can be confusing. DOE Explains offers straightforward explanations of key words and concepts in fundamental science. It also describes how these concepts apply to the work that the Department of Energy’s Office of Science conducts as it helps the United States excel in research across the scientific spectrum.

 

Antimatter

Artificial Intelligence

Atmospheric Radiation

Atmospheric Rivers

Batteries

Beta Decay

Bioenergy Research

Biofuels

Biomolecular Imaging

Bosons and Fermions

Burning Plasma

Carbon Cycle

Carbon Sequestration

Catalysts

Clouds and Aerosols

Cosmic Acceleration/Dark Energy

Cosmology

Critical Materials

Dark Matter

Deuterium-Tritium Fusion Fuel

Direct Air Capture

Earth System and Climate Models

Electromagnetic Force

Electrons

Exascale Computing

Fusion Energy Science

Fusion Nuclear Science and Technology

Fusion Reactions

Genomics

Gravity

Higgs Boson

High Energy Density Plasmas

Isotopes

Light Sources

Machine Learning

Microbiology

Multi-Sector Dynamics Modeling

Muons

Nanoscience

Neutrino

Neutrons

Neutron Stars

Nuclear Data

Nuclear Fission

Nuclei

Nucleosynthesis

Particle Accelerators

Photons

Plant Microbiome

Plasma

Plasma Confinement

Protons

Quantum Chromodynamics

Quantum Computing

Quantum Mechanics

Quantum Networks

Quarks and Gluons

Radioactivity

Relativity

Soil

Solar Fuels

Spacetime

Standard Model of Particle Physics

Stellarator

Strong Force

Superconductivity

Superheavy Elements

Supernovae

Symmetry in Physics

Systems Biology

Tokamak

Ultrafast Science

Weak Force

Department of Energy

Committed to Restoring America’s Energy Dominance.

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