256.01-11—Methods of allocation.
Indirect costs and compensation for use of capital shall be allocated to work orders in accordance with the service company's applicable and currently effective methods of allocation filed with the Commission. Both direct and allocated indirect costs of work orders for two or more associate companies shall be allocated among such companies in the same manner. Each work order should identify the methods of allocation to associate companies and the accounts to be charged. The associate companies should be notified in writing of any change in the methods of allocation.