Cost Assignment and Allocation Manuals

(a)Each utility shall maintain on file with the Commission an approved indexed cost assignment and allocation manual which describes and explains the calculation methods the utility uses to segregate and account for revenues, expenses, assets, liabilities, and rate base cost components assigned or allocated to Colorado jurisdictional activities. It includes the calculation methods to segregate and account for costs between and among jurisdictions, between regulated and non-regulated activities, and between and among utility divisions.#

(b)Each utility shall include the following information in its CAAM.#

(I)A listing of all regulated or non-regulated divisions of the Colorado utility together with an identification of the regulated or non-regulated activities conducted by each.#

(II)A listing of all regulated or non-regulated affiliates of the Colorado utility together with an identification of which affiliates allocate or assign costs to and from the Colorado utility.#

(III)A listing and description of each regulated and non-regulated activity offered by the Colorado utility. The Colorado utility shall provide a description in sufficient detail to identify the types of costs associated with the activity and shall identify how the activity is offered to the public and identify whether the Colorado utility provides the activity in more than one state. If an activity is offered subject to tariff, the Colorado utility may identify the tariff and the tariff section that describes the service offering in lieu of providing a service description.#

(IV)A listing of the revenues, expenses, assets, liabilities and rate base items by Uniform System of Accounts account number that the utility proposes to include in its revenue requirement for Colorado jurisdictional activities including those items that are partially allocated to Colorado as well as those items that are exclusively assigned to Colorado.#

(V)A detailed description showing how the revenues, expenses, assets, liabilities and rate base items by account and sub-account are assigned and/or allocated to the Colorado utility's non-regulated activities, along with a description of the methods used to perform the assignment and allocations.#

(VI)A description of each transaction between the Colorado utility and a non- regulated activity which occurred since the Colorado utility's prior CAAM was filed and, for each transaction, a statement as to whether, for this Commission's jurisdictional cost assignment and allocation purposes, the value of the transactions is at cost or market as applicable.#

(VII)A description of the basis for how the assignment or allocation is made.#

(VIII)If the utility believes that specific cost assignments or allocations are under the jurisdiction of another authority, the utility shall so state in its CAAM and give a written description of the prescribed methods. Nothing herein shall be construed to be a delegation of this Commission's ratemaking authority related to those assignments or allocations.#

(IX)Any additional information specifically required by Commission order.#

(c)A utility may treat certain transactions as confidential pursuant to the Commission rules on confidentially.#

(d)Following the initial approval of its CAAM, the utility shall file an updated CAAM in each rate case proceeding where revenue requirements are determined or every five years following approval of the CAAM then in effect, whichever is earlier.#

(e)The utility may, at its discretion, file an application seeking Commission approval of updates to its CAAM at any time.#

(f)Whenever a utility files for approval of an update to its CAAM as a result of paragraph (d) or (e) above, the utility shall also simultaneously file a FDC study reflecting the results of the cost allocation methods in its updated manual.#

(g)Each utility shall maintain all records and supporting documentation concerning its CAAMs for so long as such manual is in effect or are subject to a complaint or any active proceeding involving cost allocation before the Commission for as long as such proceeding may be open.#