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MidAmerican Energy rate increase

Electric & gas · Iowa, Illinois, South Dakota · Investor-owned utility · part of Berkshire Hathaway Energy

Proposed

Last checked

In Iowa, MidAmerican Energy has a request pending with regulators: Iowa natural gas delivery rate increase (interim rates since July 2026), seeking $54.9 million. See the details below for what the sources say about bill impacts.

Details and sources

Rate changes, newest first

Illinois electric rate increase phased in over 2027 and 2028

Base rate case · Illinois · Electric

Proposed

Typical residential bill

Not stated for a specific usage level. Any figures the sources give are in the summary below.

Filed
March 20, 2026
Decision expected
2027
Requested effective
2027
Requested increase
$40.8 million
Approved increase
Pending
Docket
26-0331/0332 (consolidated)

MidAmerican filed on March 20, 2026 for $40.8 million more in Illinois electric revenue, its first request since 2013. It proposes a two-step phase-in for residential customers: about $9.11/month in 2027 and $9.10/month more in 2028, excluding taxes and fees. The Citizens Utility Board calls the increase a hardship and plans to intervene; the ICC review takes about 11 months.

Utility's stated reasons

  • First electric increase request since 2013
  • Flat customer growth and lower electric use
  • Higher labor, construction and material costs
Sources (3) · Based on news or utility announcements

Last verified Oct 12, 2026

Illinois natural gas rate increase proposed for 2027

Base rate case · Illinois · Natural gas

Proposed

Typical residential bill

Not stated for a specific usage level. Any figures the sources give are in the summary below.

Filed
March 20, 2026
Decision expected
2027
Requested effective
2027
Requested increase
$8.6 million
Approved increase
Pending
Docket
26-0331/0332 (consolidated)

Alongside its electric request, MidAmerican asked the ICC in March 2026 for $8.6 million more in Illinois gas revenue, its first gas increase request since 2009. It estimates the average residential gas bill would rise about $6.21/month from 2027, excluding taxes and fees. The Citizens Utility Board plans to challenge spending it considers unjustified.

Utility's stated reasons

  • First gas increase request since 2009
  • Gas system upgrades in the Quad Cities
  • Higher labor, construction and material costs
Sources (3) · Based on news or utility announcements

Last verified Oct 12, 2026

Iowa natural gas delivery rate increase (interim rates since July 2026)

Base rate case · Iowa · Natural gas

Proposed

Typical residential bill

Not stated for a specific usage level. Any figures the sources give are in the summary below.

Filed
July 7, 2026
Decision expected
Not disclosed
Requested effective
Not disclosed
Requested increase
$54.9 million
Approved increase
Pending
Docket
RPU-2026-0001

MidAmerican asked the IUC on July 7, 2026 for $54.9 million more a year in Iowa gas base rates (9.7%, 2027 future test year). Interim rates worth $43.8 million a year began July 17, 2026, subject to refund with interest. The company says the typical residential bill would rise about 5%, from $55.60 to $58.49 a month; the commodity cost of gas is not affected.

Utility's stated reasons

  • Pipeline integrity work
  • Replacing low-pressure gas mains through 2030
  • Higher labor, material and contractor costs
Sources (3) · Verified against regulator or utility filings

Last verified Oct 12, 2026

Who decides

Utility website: www.midamericanenergy.com

Related

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Last checked Oct 12, 2026. Spotted something out of date? Tell us.