Cook Coal Terminal (Applies to I&M, PSO and SWEPCo) I&M Barging, Urea Transloading and Other Services (Applies to APCo and I&M) Cook Coal Terminal, which is owned by AEGCo, performs coal transloading and storage services at cost for I&M. The coal transloading costs were $12 million, $13 million and $12 million in 2020, 2019 and 2018, respectively. I&M recorded the cost of transloading services in Fuel on the balance sheets. Cook Coal Terminal also performs railcar maintenance services at cost for I&M, PSO and SWEPCo. The railcar maintenance costs were as follows: I&M, PSO and SWEPCo recorded the cost of the railcar maintenance services in Fuel on the balance sheets. I&M provides barging, urea transloading and other transportation services to affiliates. Urea is a chemical used to control NO emissions at certain generation plants in the AEP System. I&M recorded revenues from barging, transloading and other services in Other Revenues – Affiliated on the statements of income. The affiliated companies recorded these costs paid to I&M as fuel expenses or other operation expenses. The amounts of affiliated expenses were: x APCo operates a facility which repairs and rebuilds specialized components for the generation plants across the AEP System. APCo defers the cost of performing these services on the balance sheet and then transfers the cost to the affiliate for reimbursement. The AEP subsidiaries recorded these billings as capital or maintenance expenses depending on the nature of the services received. These billings are recoverable from customers. The following table provides the amounts billed by APCo to the following affiliates: Central Machine Shop (Applies to APCo, I&M, PSO and SWEPCo) Years Ended December 31, Company 2020 2019 2018 (in millions) AGR $ 2.9  $ 0.8  $ 1.6  I&M 3.2  2.3  2.4  KPCo 0.9  1.4  1.7  PSO 0.9  1.1  0.5  SWEPCo 0.5  1.1  0.7  Years Ended December 31, Company 2020 2019 2018 (in millions) AEGCo $ 10.6  $ 14.9  $ 19.9  APCo 43.7  38.9  35.1  KPCo 3.2  4.8  4.2  WPCo 3.3  4.8  4.2  387 Years Ended December 31, Company 2020 2019 2018 (in millions) I&M $ 0.9  $ 1.3  $ 1.5  PSO 0.7  0.8  0.7  SWEPCo 3.0  4.0  3.4 