Asset Retirement Obligation

As part of our annual audit plan, we audited the asset retirement obligation (ARO) controls relied on by management to ensure the ARO balances in the TVA's financial statements are accurate and complete. Controls over the balance in this and other related ARO accounts included quarterly reconciliations of the general ledger balances and underlying support for the cost estimates maintained in a worksheet format for each plant. We tested the reconciliations and determined the controls over the ARO process were operating effectively to ensure balances were accurately stated, in all material respects, in TVA's June 30, 2005, financial statements.