Utility Tariffs


Most utility tariffs have been scanned and uploaded to the IUB's Electronic Filing System. To search for a utility company tariff, select Search, Tariff 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 Web Sites:

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 Company
Windstream Iowa Communications, Inc.
Linn County Rural Electric Cooperative
McLeodUSA Telecommunications Services, LLC d/b/a PAETEC Business Services (Internet Explorer 5.5 or Netscape 7.0 and higher)
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 the utility company's web site has not been reviewed by the Iowa Utilities Board. In case of a discrepancy between tariffs presented on a company's web site and the approved tariff on file with the Iowa Utilities Board, the approved tariff on file with the Iowa Utilities Board has precedence.