401(k) · DOL Form 5500 · 2024

Midamerican Energy Company 401(k) Plan

Data updated 2026-08-11

$1.6B
Total assets: 4,964
Participants: 99th
Percentile by assets: $319,263
Avg per participant

Official DOL plan name: Midamerican Energy Company Retirement Savings Plan · Sponsored by Midamerican Energy Company · Iowa · Utilities

$1.6B in assets, 4,964 participants

Midamerican Energy Company's Midamerican Energy Company Retirement Savings Plan reported $1.6B in total assets and 4,964 participants in its 2024 DOL Form 5500 filing, ranking in the 99th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.

99th percentile by assets (of 123,622 plans)
#671 in Utilities (732 peers)

Coverage in Iowa

Midamerican Energy Company Retirement Savings Plan covers 4,964 participants in Iowa, 8.2x the typical Iowa plan (state average ~609 per filing). Assets: $1.6B.

$1.6B
total plan assets (2024 EOY): 4,964
covered participants: 99th
percentile by assets (of 123,622 plans): $319,263
avg assets per participant

Midamerican Energy Company Retirement Savings Plan reported net income fell from $282M in the plan year 2023 filing to $146M in the plan year 2024 filing.
Midamerican Energy Company Retirement Savings Plan end-of-year assets fell from $1.7B in the plan year 2023 filing to $1.6B in the plan year 2024 filing.
Midamerican Energy Company Retirement Savings Plan reported participants fell from 5,056 in the plan year 2023 filing to 4,964 in the plan year 2024 filing.

See the national 2023→2024 release diff →

State

Iowa

Industry

Utilities

Participants vs Iowa filers

In Iowa, the average filing covers about 609 participants across 1,246 plans. Midamerican Energy Company Retirement Savings Plan reports 4,964 participants - 8.2x that state average ($1.6B EOY assets).

Iowa filing particulars

Total Assets (Beginning of Year)	$1.4B
Net Assets (End of Year)	$1.6B
Net Income	$146M
Employer EIN	421425214
Plan Effective Date	1976-08-01
Filing Status	FILING RECEIVED

Sponsor Plan History (Midamerican Energy Company)

Total plan assets by year, all Midamerican Energy Company plans on file

Year	Plans	Participants	Total Assets
2022	2	8,307	$1.8B
2023	2	8,058	$2.2B
2024	10	49,803	$12.0B

Nearby 401(k) Plans in Iowa

Peer 401(k) plans, same state, same plan type, ranked by total assets.

Midamerican Energy Company Retirement Savings Plan vs. nearby 401(k) plans in Iowa, assets vs. participants

The Principal Select Savings Plan $4.6B · 12,841
The Rsm US LLP Retirement Plan $3.4B · 14,728
Iowa Health System Section 401(k) Retirement Savings Plan $3.3B · 25,072
The Hy-Vee and Affiliates 401(k) Plan $3.1B · 55,411
Transamerica 401(k) Retirement Savings Plan $2.7B · 8,059

Compare Midamerican Energy Company Retirement Sa… side-by-side with 3 peers →

Similar-Sized 401(k) Plans Nationally

401(k) plans in other states closest to Midamerican Energy Company Retirement Savings Plan by total assets, not by location.

Roper Technologies, Inc. Employees' Retirement Savings 004 Plan (FL) $1.6B · 10,008
Darden Savings Plan (FL) $1.6B · 189,323
Ardent Health Services Retirement Savings Plan (TN) $1.6B · 20,951
Wabtec Savings Plan (PA) $1.6B · 12,095

Frequently Asked Questions

How did Midamerican Energy Company Retirement Savings Plan assets move in 2024? ▼

Midamerican Energy Company Retirement Savings Plan grew at a solid clip - up 11.5% during 2024, from $1.4B to $1.6B. Reported net income was $146M.

How have Midamerican Energy Company plan assets changed over time? ▼

Across 3 plan years on file (2022-2024), Midamerican Energy Company's sponsor-wide assets grew 575.6%, from $1.8B to $12.0B.

Where does Midamerican Energy Company Retirement Savings Plan rank by assets among Form 5500 filers? ▼

Midamerican Energy Company Retirement Savings Plan ranks in the 99th percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (among the largest 1% of all filed plans).

Which 401(k) plans are similar in size to Midamerican Energy Company Retirement Savings Plan? ▼

Among 401(k) plans in other states, the closest by assets is Roper Technologies, Inc. Employees' Retirement Savings 004 Plan in FL ($1.6B, 10,008 participants).

Next read for Midamerican Energy Company Retirement Sa…

Filing takeaways

Ways to act on Midamerican Energy Company Retirement Savings Plan's numbers.

By total assets, Midamerican Energy Company Retirement Savings Plan ranks among the largest 1% of all filed plans. See the largest plans
Compare it side-by-side against 3 similar 401(k) plans in Iowa. Compare plans
Midamerican Energy Company's sponsor-wide assets have grown 575.6% since 2022 across 3 plan years on file. More Utilities plans

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2024.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 421425214.