UPF buildings responsible for most cost overrun and delay, GAO says

UPF buildings responsible for most cost overrun and delay, GAO says

Cumulative cost and schedule overruns have increased since 2023 for the National Nuclear Security Administration’s (NNSA) portfolio of major projects in the execution phase, according to a report by the Government Accountability Office (GAO). As of June 2025, the NNSA’s portfolio’s cumulative cost overrun has increased from $2.1 billion in 2023 to $4.8 billion, the February report said. The cumulative schedule delay increased from nine years in …