U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Image
A aerial image to two power plant towers

Who We Are

For more than 40 years, OIG reviews have focused on helping TVA improve the efficiency and effectiveness of TVA operations, save or recover money, and serve as a deterrent to misconduct and fraud.

Image
An aerial view of Racoon Mountain

What We Do

The Audits team performs a wide variety of engagements designed to promote positive change and provide assurance to TVA stakeholders

Image
An image of a spillway

Why We Do It

Our vision is to make TVA better

Tennessee Valley Authority Home

MAKING TVA BETTER

The TVA Office of Inspector General performs a crucial mission by providing independent and objective reporting to the TVA Board, the Congress, and other stakeholders.

For more than 40 years, the TVA OIG has stayed committed to providing an independent analysis of TVA operations and programs to help identify more efficient and effective ways to do business and to prevent and detect fraud, waste, and abuse. In those years, we have seen many changes in TVA and TVA OIG. One constant is the focus on making TVA better by helping TVA save or recover money, reduce risks, and improve operations and working to bring justice to those who commit fraud. Making TVA better is a mutual purpose we share with TVA management, employees, and the TVA Board. It is important to the 10 million people of the Tennessee Valley served by TVA that we approach our work with that purpose every day.

Image
Some People Working at a Conference Table

manage_search

AUDITS

The Audits team generates and oversees comprehensive financial and performance audits of TVA programs and operations, providing an inclusive picture of TVA's overall fiscal and operational health.

Learn More

insert_chart_outlined

EVALUATIONS

The Evaluation team assesses both operational and management oversight of projects across TVA to ensure objectives and operational functions are achieved effectively and efficiently. 

Learn More

balance

INVESTIGATIONS

The Investigations team proactively and reactively uncovers activity related to fraud, waste, and abuse in TVA programs and operations.

Learn More

RECENT SEMIANNUAL REPORTS

Semiannual Report – April 1, 2025 – September 30, 2025

We are pleased to present our report for the period April 1, 2025, to September 30, 2025.  In this semiannual period, our audit, evaluation, and investigative activities identified more than $31.4 million in questioned costs; funds to be put to better use; recoveries, fees, and savings; and opportunities for the Tennessee Valley Authority (TVA) to improve its programs and operations.  This report also includes a feature, “40 Years of Making TVA Better,” that looks back at the last four decades—the environment TVA operated in each decade and the Inspectors General t

Semiannual Report

Semiannual Report – October 1, 2024 – March 31, 2025

We are pleased to present our report for the period October 1, 2024, to March 31, 2025.  In this semiannual period, our audit, evaluation, and investigative activities identified more than $75.1 million in questioned costs; funds put to better use; restitutions, recoveries, fees, and fines; and opportunities for the Tennessee Valley Authority (TVA) to improve its programs and operations.

Semiannual Report

LATEST OIG REPORTS

Risk Mitigation of Low-Pressure Turbines

Report Number
2025-17596

The Tennessee Valley Authority’s (TVA) Enterprise Risk Management (ERM) business unit (BU) focuses on identifying and prioritizing enterprise risks.

Inspection / Evaluation

Renewable Energy Certificates to Meet North Carolina Requirements

Report Number
2025-17598

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 efficiency measures.  Additionally, North Carolina CEPS requires a percentage of retail sales be attributed to solar, poultry, and swine resources.  The Tennessee Valley Authority’s (TVA) renewable energy certificates (REC) portfolio management process includes obtainin

Inspection / Evaluation

Backup and Recovery of Operational Technology - Gas Operations

Report Number
2025-17557

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.

Audit

Facilities Technology Alliance LLC - Contract No. 15664

Report Number
2025-17567

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 terms.  Our audit scope included $15.1 million in costs paid to FTA from March 6, 2023, through February 28, 2025.

Audit

For more than 40 years, the TVA OIG has stayed committed to providing an independent analysis of TVA operations and programs to help identify more efficient and effective ways to do business and to prevent and detect fraud, waste, and abuse. Making TVA better is a mutual purpose we share with TVA management, employees, and the TVA Board. It is important to the 10 million people of the Tennessee Valley served by TVA that we approach our work with that purpose every day.

Ben R. Wagner
Inspector General