Tennessee Valley Authority OIG

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...

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...

Due to the importance of protecting operational technology from cybersecurity threats, we audited the security of a specific type of system access at the Tennessee Valley Authority’s (TVA) gas sites. Our objective was to determine if a specific type of system access supporting Gas Operations was...

We performed an audit of costs billed to the Tennessee Valley Authority’s (TVA) by a contractor for nuclear steam supply system refueling and inspection services at TVA’s Watts Bar Nuclear Plant and Sequoyah Nuclear Plant. The contract provided for TVA to compensate the contractor on a time and...

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...

The Tennessee Valley Authority’s (TVA) Enterprise Risk Management (ERM) business unit (BU) 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...

On October 10, 2023, the North Carolina General Assembly enacted the Clean Energy and Energy Efficiency Portfolio Standard (CEPS) requiring rural electric cooperatives and municipal electric suppliers in North Carolina to meet 10 percent of their energy needs through clean energy resources or energy...

The Office of the Inspector General performed an audit to determine if the backup and recovery process for operational technology cyber assets at Tennessee Valley Authority (TVA) natural gas plants were (1) designed in accordance with federal guidance and (2) operating as defined by TVA policy. We...

We performed an audit of costs billed to the Tennessee Valley Authority (TVA) by Facilities Technology Alliance LLC (FTA) under Contract No. 15664 for staff augmentation electrical and telecommunication services. Our objective was to determine if costs were billed in accordance with the contract’s...

Between January 1, 2022, and July 8, 2025, TVA spent about $47 million on tools across the fleet. Due to the amount spent on tools at TVA, we performed an audit of TVA’s tool management controls. Our audit objective was to determine if controls are in place to safeguard tools at selected sites. Our...