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2.7avg. commissioner years of serviceSource: Advanced Energy United
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8.84ยขavg. price per kWhSource: EIA
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4legislative session length, monthsSource: Legislative Session
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51%residential market share of the largest utilitySource: December 2024, Advanced Energy United
breakdown of market shareUtility Percentage Market Share in Iowa
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MidAmerican Energy Co
Market Share51% -
Interstate Power and Light Co
Market Share34%
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8governor years servedSource: December 2024, Advanced Energy United
Utilities
Iowa Utilities
In most cases, we only provide profiles for the largest five utilities with more than 100,000 total customers.
The schedules listed here reflect what is established in statute, rules, or Orders. However, PUCs and utilities sometimes deviate from these schedules. Please check the most recent proceeding by going to the "Important Recurring Proceedings" section for each utility below.
Policy AreaAnnual Fuel Report
Schedule Each electric utility shall annually report to all its Iowa customers its percentage mix of fuel and energy inputs used to produce electricity.
Policy AreaAlternative Energy Program (Renewable Portfolio Standard)
ScheduleOn or before April 1, each electric utility subject to rate regulation shall file an annual report of renewable energy program activity for the previous calendar year.
Policy AreaEnergy Efficiency Annual Report
ScheduleElectric utilities must submit an energy efficiency annual report on or before May 1st. Energy Efficiency plans span five years, with the first five-year program period from 2019-2023.
MidAmerican Energy Co
Ownership TypeInvestor Owned
Balancing AuthorityMidcontinent Independent Transmission System Operator, Inc..
Holding Company
Structure
Owns Generation
Owns Transmission
Share of Residential Customers in IA51%
Interstate Power and Light Co
Ownership TypeInvestor Owned
Balancing AuthorityMidcontinent Independent Transmission System Operator, Inc..
NERC Regional EntityMRO
Holding Company
Structure
Owns Generation
Owns Transmission
Share of Residential Customers in IA34%