Tennessee Valley Authority OIG

As part of our annual audit plan, we performed an audit of costs billed to the Tennessee Valley Authority (TVA) by Siemens Energy, Inc. (Siemens) under Contract No. 10092. This contract was a long-term service agreement for the Ackerman Combined Cycle Plant located in Ackerman, Mississippi. Under...

As part of our annual audit plan, we audited costs billed to the Tennessee Valley Authority (TVA) by Stantec Consulting Services, Inc. (Stantec) to provide coal combustion residual engineering services under Contract No. 13051. The contract provided for TVA to compensate Stantec for work on either a...

As part of our annual audit plan, we audited costs billed to the Tennessee Valley Authority (TVA) by The L.E. Myers Co. (LE Myers) under Contract No. 9070 for construction and modification services for TVA's Transmission and Power Supply Program. The contract provided for TVA to compensate LE Myers...

As part of our annual audit plan, we audited the Tennessee Valley Authority's (TVA) utility-scale Solar Purchased Power Agreements (PPA). Our audit objectives were to determine if TVA has (1) approached Solar PPAs to better understand the industry and market trends being developed prior to entering...

As part of our annual audit plan, we audited costs billed to the Tennessee Valley Authority (TVA) by Mesa Associates, Inc. (Mesa) under Contract No. 13191 for engineering, design, and construction support services in support of TVA's dam safety, generation, and transmission work. The contract...

As part of our annual audit plan, we audited costs billed to the Tennessee Valley Authority (TVA) by Black & Veatch Corporation (B&V) for engineering services under Contract No. 10820. Our audit objective was to determine if costs were billed in accordance with the terms and conditions of the...

At the request of the Tennessee Valley Authority (TVA), we performed an audit of costs paid by TVA to AECOM Energy and Construction, Inc. (AECOM) for engineering services under Contract No. 8273. The contract provided for TVA to compensate AECOM for work on either a cost reimbursable or fixed price...

We performed an audit of craft labor costs billed to the Tennessee Valley Authority (TVA) by Day & Zimmermann NPS, Inc. (DZ) under Contract No. 11515. Under the contract, DZ was to provide the services of qualified craft, noncraft, or staff augmented personnel to perform modification, outage...

We performed an audit of costs billed to the Tennessee Valley Authority (TVA) by a company for the supply of natural gas to TVA's combined cycle or combustion turbine generation plants. Our audit included approximately $205 million in costs billed to TVA for gas delivered from June 1, 2017, to May...

As part of our annual audit plan, we audited costs billed to the Tennessee Valley Authority (TVA) by Enercon Services, Inc. (Enercon) for engineering services under Contract No. 7757. The contract provided for TVA to compensate Enercon for work on either a cost reimbursable or fixed price basis. Our...