All Reports

The Tennessee Valley Authority (TVA) operates Browns Ferry Nuclear Plant (Browns Ferry), Sequoyah Nuclear Plant (Sequoyah), and Watts Bar Nuclear Plant (Watts Bar), which have a combined generating capacity to power more than 4.5 million homes and businesses.  During calendar years (CY) 2024 through 2025, these three nuclear plants used about 1,410 fuel assemblies combined.

According to the Occupational Safety and Health Administration, worker fatigue increases the risk for illness and injuries and has been a contributing factor in several industrial disasters.  The Tennessee Valley Authority’s Nuclear Fatigue Rule (NFR) procedure establishes requirements for managing fatigue and controlling work hours in accordance with Title 10 Code of Federal Regulations, Part 26, Subpart I, Managing Fatigue.  The regulation has (1) a maximum average work hour requirement for covered individuals which limits worker hours to an average of 54 hours p

The Tennessee Valley Authority (TVA) has four coal plants that include 24 units with a combined net capacity of 5,815 megawatts.  These coal plants have operated well beyond their original book life and are among the oldest still in operation in the nation. Due to the performance and cost risks of operating an aging coal fleet, we performed an evaluation of coal plant asset condition to determine if TVA had assessed the condition of assets and had plans in place to address degradation.  

The Tennessee Valley Authority’s (TVA) three nuclear plants, Browns Ferry, Sequoyah, and Watts Bar, are capable of generating an average of 8,275 megawatts of electricity, making TVA the third-largest nuclear fleet in the United States.  In fiscal year 2025, TVA generated 56,157 million kilowatt hours of nuclear power, accounting for 33 percent of TVA’s total fleet power generation.  To maintain the nuclear fleet, TVA is making significant investment.  For fiscal year 2025, the TVA Board of Directors approved $257 million to support reliable operation of the s

We performed an audit of the Tennessee Valley Authority’s (TVA) Contract No. 15387 with a company to provide a broad range of engineering, design, and construction management support when and as requested by TVA.  The objective of our audit was to determine if the costs billed to TVA were in accordance with the contract’s terms.  Our audit scope included approximately $33.2 million in costs billed to TVA between January 1, 2024, and March 31, 2025. 

We are pleased to present our report for the period October 1, 2025, to March 31, 2026.  In this semiannual period, our audit, evaluation, and investigative activities identified more than $41.7 million in questioned costs, recoveries, fees, and savings; and opportunities for Tennessee Valley Authority (TVA) to improve its programs and operations.  In our semiannual report feature, we discuss TVA’s role and challenges in Energizing the Valley’s and America’s Future. 

The Tennessee Valley Authority’s (TVA) Enterprise Risk Management (ERM) business unit focuses on identifying and prioritizing enterprise risks.  Annually, ERM leads the preparation of an enterprise risk portfolio, which includes risks across TVA, to aid leadership in strategic and business planning processes.  Each business unit includes their specific risks in the portfolio and documents the probability of occurrence, financial impact, and actions to manage the risk.  TVA Labor Relations included Lack of Robust Pathways and Pipelines to Support Workforce Readiness and

The Tennessee Valley Authority (TVA) plans to invest approximately $7 billion to extend and preserve the life of its seven nuclear units over the next 20 years. Selection of suppliers responsible for maintenance or system upgrades within TVA’s nuclear fleet can affect TVA’s ability to maintain generation reliability.

To meet the Tennessee Valley region’s growing demand for power, the Tennessee Valley Authority (TVA) is investing in existing assets and new generation.  In fiscal year 2025, TVA invested more than $4.6 billion in capital investments and plans to invest $4.2 billion in fiscal year 2026.  Due to potential risks to cost and schedule from rework in TVA projects, we performed an evaluation of contractor rework for Major Projects at TVA.  The objectives were to evaluate TVA’s oversight of contractor rework and determine if rework was being handled in accordance with con

Due to constraints on the existing fiber network, in May 2017, the TVA Board of Directors approved the Strategic Fiber Initiative (SFI) with a budget of $300 million to expand TVA’s fiber capacity by 3,500 miles over the course of ten years on 31 prioritized routes.  In addition, TVA planned to lease surplus fiber to external entities to help offset a portion of the operational costs. As of January 2026, the 31 routes that were originally scheduled for fiber installation had been reduced to 19 routes and mileage reduced from 3,500 to approximately 1,900 miles to stay wi