Tennessee Valley Authority OIG

The Tennessee Valley Authority (TVA) has developed a dam safety program to protect lives and property by ensuring that structures within the program are designed, constructed, and maintained as safely and reliably as practicable. This program applies to dams, dikes, impoundments, levees, water...

The Office of the Inspector General conducted an audit of TVA’s cloud inventory due to the Tennessee Valley Authority’s (TVA) increased use of cloud services. Our objective was to determine if TVA maintained an accurate and complete cloud inventory. Although we determined TVA’s (1) defined processes...

The Office of the Inspector General conducted an evaluation to determine if fire‑protection and ammonia safety systems at TVA coal plants were being properly maintained and identified issues were being addressed. We determined ammonia systems were being properly maintained and identified issues were...

As part of our annual audit plan, we performed an audit of costs billed to the Tennessee Valley Authority (TVA) by Terracon Consultants, Inc. (Terracon) for geotechnical and hydrogeological site investigations and groundwater quality monitoring services under Contract No. 15087. Our audit objective...

We performed an audit of costs billed to the Tennessee Valley Authority (TVA) by Wright Brothers Contracting, Inc. (Wright Brothers) for site grading services and materials under Contract No. 16512. The contract provided for TVA to compensate Wright Brothers for work on a fixed price basis for...

At the request of the Tennessee Valley Authority’s (TVA) Supply Chain, we examined the cost proposal submitted by a contractor for designing, fabricating, and delivering hydraulic turbine runners and components as specified by TVA. Our examination objective was to determine if the contractor's cost...

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...

The Office of the Inspector General performed an audit to determine if the Tennessee Valley Authority’s (TVA’s) corporate deployment of Microsoft 365® was configured to require and enforce the use of multi-factor authentication (MFA) for all accounts. Our scope was limited to MFA managed through...

The Office of Inspector General determined risks to Tennessee Valley Authority resulting from lower-than-expected demand by a manufacturer was not considered and actions to address cost overruns were not fully implemented. Specifically, the manufacturer’s monthly demand averaged approximately 10...