We are a team of innovators and experts obsessed with turning potential into reality.

We are a team of innovators and experts obsessed with turning potential into reality.

Xcimer exists to realize the promise of fusion for all

Founded in 2022, and based in Denver, CO with offices in Redwood City, CA, Xcimer Energy is backed by the world’s leading climate investors including Hedosophia Investments, Breakthrough Energy Ventures, Lowercarbon Capital, Prelude Ventures, Emerson Collective, Starlight Ventures, Wireframe Ventures, and Gigascale Capital.

With the support of our investors and team of partners and collaborators throughout the world, we are taking steps to ensure a safe and abundant future for humanity and the earth.

Xcimer exists to realize the promise of fusion for all
OUR LEADERSHIP
  • Working in inertial fusion research and commercialization since 2009, with expertise in radiation hydrodynamics simulation & modeling.

    MIT Physics and Nuclear Engineering

    Conner Galloway

    Conner Galloway

    CEO, Founder
  • Early-stage, innovative technology startups since 2002 in industries ranging from fusion to healthcare to AI.

    MIT EECS

    Alexander Valys

    Alexander Valys

    President, Founder
  • 25-year career building and scaling engineering teams including 12 years at Blue Origin leading engineering for the New Shepherd program.

    Giovanni Greco

    Giovanni Greco

    SVP, Engineering
  • Engineering and managing fusion projects for over 25 years, including 15 years at NIF and 5 years at ITER. Member of FESAC and Chair of the FPA Board.

    Nuclear Engineering, UNED

    Susana Reyes, Ph.D.

    Susana Reyes, Ph.D.

    VP Chamber and Plant Design
  • Over 15 years of experience running operations in advanced technology fields including semiconductor lithography.

    Brent Gill

    Brent Gill

    Chief Operating Officer
  • Over 40 years experience in pulsed power engineering, including leading design and delivery of the pulsed power for the Electra program at NRL.

    Doug Weidenheimer

    Doug Weidenheimer

    Director of Pulsed Power
  • Broad entrepreneurial and scientific background in optical physics, with areas of expertise including UV optical coatings and excimer gas discharge technologies.

    University of Illinois, Electrical Engineering

    Cyrus Herring, Ph.D.

    Cyrus Herring, Ph.D.

    Director of Laser Engineering
  • Over 15 years of experience in high-power laser and spectroscopic experiments, with extensive expertise in gas laser kinetics, deep UV sources, spectroscopy, microfabrication, and thin films.

    Andrey Mironov, Ph.D

    Andrey Mironov, Ph.D

    Director of Experimental Science
  • Over 20 years experience in large scale precision optical systems. Optical design, integration, and characterization of advanced telescopes and pointing systems.

    University of Arizona, Optical Science

    Dennis Douglas, Ph.D.

    Dennis Douglas, Ph.D.

    Director of Optics
  • Seasoned talent acquisition leader with expertise in recruiting and staffing technical talent for high-growth technology companies including Blue Origin and Meta Reality Labs.

    Dan Bauer

    Dan Bauer

    Head of Talent
  • Designing and interpreting laser driven implosion experiments for over ten years.

    University of Michigan - Nuclear Engineering
    University of Rochester - LLE

    Alison Christopherson, Ph.D

    Alison Christopherson, Ph.D

    Head of Target Design
  • Over 15 years of performing diverse legal and compliance roles supporting product engineering, research and development, manufacturing, infrastructure buildout, supply-chain, and commercial transactions.

    University of Florida, Materials Science & Engineering, Juris Doctor

    Gary Sobolevskiy

    Gary Sobolevskiy

    General Counsel
  • Bedros Afeyan, Ph.D.

    Technical Advisory Board
  • Paul Hoff, Ph.D.

    Technical Advisory Board
  • William Krupke, Ph.D.

    Technical Advisory Board
  • Joseph Mangano, Ph.D.

    Technical Advisory Board
  • Tom Mehlhorn, Ph.D.

    Technical Advisory Board
  • Allen Offenberger, Ph.D.

    Technical Advisory Board
  • Michael Tobin

    Technical Advisory Board
  • J. Gary Eden, Ph.D.

    Technical Advisory Board

SCIENTIFIC ADVISORY BOARD

Riccardo Betti, Ph.D.
ICF, Implosion Physics
University of Rochester, LLE

Rick Spielman, Ph.D.
Pulsed Power
University of Rochester

Jim Trebes, Ph.D.
National Security, Physics
LLNL (Retired)

George Tynan, Ph.D.
Fusion Reactor Physics
UC San Diego

Mark Kushner, Ph.D.
Plasma Physics, Non-linear Optics
University of Michigan

Javier Garay, Ph.D.
Laser Physics
UC San Diego

Roger Falcone, Ph.D.
Plasma Physics, HEDP, DOE
UC Berkeley (Retired)

Greg Van Dyke, Ph.D.
DOD, Fusion (NWET)
USAF (Retired), Altrusion

David Crandall, Ph.D.
DOD, NNSA, Fusion
DOE, NNSA (Retired)

Bob Smith, Ph.D.
Commercial Technology, Aerospace
(Previously) Blue Origin, Honeywell

TECHNICAL ADVISORY BOARD

Bedros Afeyan, Ph.D.
Technical Advisory Board

Paul Hoff, Ph.D.
Technical Advisory Board

William Krupke, Ph.D.
Technical Advisory Board

Joseph Mangano, Ph.D.
Technical Advisory Board

Tom Mehlhorn, Ph.D.
Technical Advisory Board

Allen Offenberger, Ph.D.
Technical Advisory Board

Michael Tobin
Technical Advisory Board

OUR LOCATIONS
  • XEC Locations

    • Denver, CO
    • Redwood City, CA
  • Partner Locations

    • Los Alamos National Laboratory (Los Alamos, NM)
    • Lawrence Livermore National Laboratory (Livermore, CA)
    • Oak Ridge National Laboratory (Oak Ridge, TN)
    • Savannah River National Laboratory (Jackson, SC)
    • Naval Research Laboratory (Washington, DC)
    • Laboratory for Laser Energetics (Rochester, NY)
    • Massachusetts Institute of Technology (Cambridge, MA)
    • General Atomics (San Diego, CA)
    • Westinghouse (Cranberry Township, PA)
    • Universidad Nacional de Educacion a Distancia, UNED (Madrid, Spain)
OUR LOCATIONS

Our Investors

Xcimer Energy

Powering the world with
Inertial Fusion

Email Footer

Copyright © 2025 Xcimer Energy, Inc.
All Rights Reserved

  • Denver, CO