Utility Tariffs

Utility tariffs filed with the IUB show the rates and charges for public utility services and the rules and regulations under which such services are furnished.  A rate-regulated public utility shall not make effective any new or changed rate, charge, schedule, or regulation until it has been approved by the IUB and the IUB has determined an effective date, except as provided in Iowa Code chapter 476.6(8). Most utility tariffs have been scanned and uploaded to the IUB's electronic filing system. To search for a utility company tariff, select SearchTariff Search from the EFS navigation bar. On the tariff search page, you may select a specific company name or industry type (i.e. gas, electric, telephone).

Tariff Information Available on Utility Websites:

Interstate Power and Light Company
Liberty Energy (Midstates) Corporation d/b/a Liberty Utilities (f/k/a Atmos Energy)
Black Hills Energy (f/k/a Aquila, Inc./Aquila Networks)
Frontier Communications of Iowa
Iowa-American Water
Windstream Iowa Communications, Inc.
McLeodUSA Telecommunications Services, LLC d/b/a PAETEC Business Services 
MidAmerican Energy Company
Qwest Corporation d/b/a CenturyLink

In Iowa, a substantial majority of the rural independent telephone companies (ITCs) concur with the Iowa Communications Alliance Access Service Tariff No. 1 (ITA Tariff), which in turn adopts the regulations, rates and charges of National Exchange Carrier Association (NECA) Tariff No. 5, with certain exceptions. NECA Tariff No. 5 contains the regulations, rates and charges associated with the provisioning of Common Line, Switched Access, and Special Access. The ITA Tariff lists the exceptions to the NECA tariffs and includes the rates the ITCs will charge interexchange carriers for intrastate access service. These access charges are company-to-company charges and are not directly billed to end use consumers.

For additional information on access charges, please visit the Federal Communications Commission.


Tariff information presented on utility companies' websites has not been reviewed by the IUB. If a discrepancy between tariffs presented on a company's website and the approved tariff on file with the IUB is discovered, contact the IUB to have the information reviewed.

    Printed from the website on February 05, 2023 at 12:49pm.