Department of Energy

The Office of Inspector General initiated this audit to review the $5,872,733,964 of costs claimed by Consolidated Nuclear Security, LLC (CNS) to manage and operate the Pantex Plant and the Y-12 National Security Complex for fiscal years (FY) 2016 through 2018. CNS managed and operated both the...

During fiscal year (FY) 2025, the Office of Inspector General (OIG) conducted cybersecurity reviews to determine whether the Department of Energy’s unclassified cybersecurity program was implemented in accordance with Federal and Department requirements. The OIG also performed the audit, The...

This audit was performed by the Defense Contract Audit Agency (DCAA) on behalf of the Department of Energy’s Office of Inspector General and examined Jefferson Science Associates, LLC’s (JSA) costs incurred and claimed for fiscal years 2022 and 2023 at the Thomas Jefferson National Accelerator...

This audit was performed by the Defense Contract Audit Agency (DCAA) on behalf of the Department of Energy’s Office of Inspector General, which examined Fermi Research Alliance, LLC’s costs incurred and claimed for fiscal years 2021 and 2022 at the Fermi National Accelerator Laboratory, under...

This audit was performed by the Defense Contract Audit Agency (DCAA) on behalf of the Department of Energy’s Office of Inspector General and examined the Regents of the University of California’s (UC Regents) costs incurred and claimed for fiscal year ending September 30, 2021, at the Lawrence...

The Department of Energy uses management and operating (M&O) contracts to carry out 90 percent of the agency’s mission. The National Nuclear Security Administration’s (NNSA) M&O contractors for the Kansas City National Security Campus and Los Alamos National Laboratory are Honeywell Federal...

The Office of Inspector General engaged the independent public accounting firm of KPMG LLP (KPMG) to conduct the fiscal year 2025 financial statements audit of the Western Area Power Administration (WAPA), subject to our review. As part of this audit, KPMG considered WAPA’s internal controls over...

This audit was performed by the independent public accounting firm of KPMG LLP (KPMG) on behalf of the Department of Energy’s Office of Inspector General. KPMG audited the balance sheet of the Department’s Western Area Power Administration (WAPA), as of September 30, 2025, and the related...

This audit was performed by the Defense Contract Audit Agency (DCAA) on behalf of the Department of Energy’s Office of Inspector General and examined UChicago Argonne, LLC’s costs incurred and claimed for fiscal years 2021 and 2022 at the Argonne National Laboratory, under management and operating...

This audit was performed by the Defense Contract Audit Agency (DCAA) on behalf of the Department of Energy’s Office of Inspector General and examined Fluor Federal Petroleum Operations, LLC’s (FFPO) costs incurred and claimed for fiscal years 2022 and 2023 under management and operating contract No...