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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.
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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.
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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.
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.
INVESTIGATIONS
The Investigations team proactively and reactively uncovers activity related to fraud, waste, and abuse in TVA programs and operations.
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 – 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.
LATEST OIG REPORTS
Hydro Life Extension
The Tennessee Valley Authority (TVA) has 109 conventional hydroelectric generating units with a capacity of 3,783 megawatts (MW). The hydro fleet supports TVA’s mission of providing clean, reliable, and affordable electricity to people and businesses of the Tennessee Valley. As of 2021, 53 of TVA’s 109 hydro units had low asset health scores indicating the need for repair. To extend the life of the hydro fleet, the Hydro Life Extension (HLE) program was formed in 2021. Due to the importance of TVA’s hydro fleet in providing low cost, clean, and
Monitoring of Ernst & Young LLP’s Audit of the Tennessee Valley Authority Fiscal Year 2025 Financial Statements
In keeping with its responsibilities under the Inspector General Act of 1978, as amended, the OIG monitored the audit of TVA's fiscal year 2025 financial statements performed by Ernst and Young LLP (EY) to assure their work complied with Government Auditing Standards. Our review of EY's work disclosed no instance in which the firm did not comply in all material respects with Government Auditing Standards.
Kiewit Power Constructors Company - Contract No. 13156
We performed an audit of costs billed to the Tennessee Valley Authority (TVA) by Kiewit Power Constructors Company (Kiewit) under Contract No. 13156 for work performed in support of TVA’s coal combustion residual conversion program. Our audit objective was to determine if the costs billed to TVA were in accordance with the contract’s terms. Our audit scope included approximately $133.7 million in costs billed to TVA between January 1, 2023, and September 30, 2024.
Agreed-Upon Procedures for TVA Fiscal Year 2025 Performance Measures
The Office of the Inspector General (OIG) performed the procedures, which were requested and agreed to by Tennessee Valley Authority management solely to assist management in determining the validity of the Winning Performance (WP)/Executive Annual Incentive Plan measures for fiscal year (FY) ending September 30, 2025. Tennessee Valley Authority management is responsible for the WP measures data provided. In summary, procedures applied by the OIG found the:
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