Defined Benefit (Pension) · DOL Form 5500 · 2023

Southwest Gas Corporation Pension Plan

Data updated 2026-07-24

$1.2B
Total assets
2,020
Participants
99th
Percentile by assets
$585,601
Avg per participant

Official DOL plan name: Retirement Plan for Employees of Southwest Gas Corporation · Sponsored by Southwest Gas Corporation · Nevada · Utilities

$1.2B in assets, 2,020 participants

Southwest Gas Corporation's Retirement Plan for Employees of Southwest Gas Corporation reported $1.2B in total assets and 2,020 participants in its 2023 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 126,618 plans)

What the 2023 filing shows

Retirement Plan for Employees of Southwest Gas Corporation holds $1.2B for 2,020 participants - about $585,601 per participant, among the largest 1% of all filed plans, up 2.9% over the 2023 plan year.

$1.2B
total plan assets (2023 EOY)
2,020
covered participants
99th
percentile by assets (of 126,618 plans)
$585,601
avg assets per participant
State
Industry
Utilities

Defined Benefit (Pension) · DOL Form 5500 · 2023

What the Filing Says About Retirement Plan for Employees of Southwest Gas Corporation

Retirement Plan for Employees of Southwest Gas Corporation is a Defined Benefit (Pension) retirement plan sponsored by Southwest Gas Corporation, headquartered in Nevada. According to the U.S. Department of Labor's 2023 Form 5500 filing, the plan reports $1.2B in total end-of-year assets and covers 2,020 participants across the Utilities industry. The sponsor's EIN on file with the U.S. Department of Labor is 880085720, and the plan has been effective since 1971-08-01. Its filing status is currently FILING RECEIVED.

Year over year, total assets edged up modestly from $1.2B at the beginning of 2023 to $1.2B at year-end - up 2.9%. Net assets (after liabilities) closed the year at $1.2B, with reported net income of $33M driven by investment returns, contributions received, and benefit payments during the period. These figures reflect what the plan administrator certified on Schedule H or Schedule I of the Form 5500 annual return and can be compared against 2 prior plan-year filings from the same sponsor shown below.

Across the 3 plan years Southwest Gas Corporation has on file with PlainRetire (2022-2024), sponsor-wide plan assets have moved from $1.6B to $600M, a decline of 62.9%, while reported participants moved from 4,473 to 2,387 (-46.6%). The strongest year on file by total sponsor assets was 2023 at $1.7B; the softest was 2024 at $600M. Year-by-year, sponsor-wide filings show: 2022 - $1.6B in assets across 2 plans covering 4,473 participants; 2023 - $1.7B in assets across 2 plans covering 4,386 participants; 2024 - $600M in assets across 1 plan covering 2,387 participants.

By assets, Retirement Plan for Employees of Southwest Gas Corporation outranks 99% of the 126,618 plans that filed a Form 5500 for the 2023 plan year, and holds roughly 12x the national average plan size of $100M and 730 average participants.

Asset totals and participant counts reflect a single plan year snapshot and can change materially with market conditions, plan mergers, or workforce changes. Fields such as "net income" include both realized investment performance and contribution/distribution flows, a single-year figure does not by itself indicate plan health or participant outcomes. This page summarizes public DOL disclosures for research and educational purposes only and is not retirement, tax, legal, or financial advice. Before making decisions about your own retirement benefits or evaluating an employer's plan, verify the underlying filing directly via the DOL EFAST2 system and consult a qualified professional.

How the percentile is calculated: we count every plan that filed a 2023 Form 5500 with a reported end-of-year asset figure (126,618 plans), rank Retirement Plan for Employees of Southwest Gas Corporation against all of them by total assets, and report the share of those plans it outranks. A plan reporting no asset figure for the year is excluded from the ranking rather than assumed to be zero.

Financial Summary (2023)

Total Assets (Beginning of Year)$1.2B
Total Assets (End of Year)$1.2B
Net Assets (End of Year)$1.2B
Net Income$33M
Plan TypeDefined Benefit (Pension)
Employer EIN880085720
Plan Effective Date1971-08-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Southwest Gas Corporation)

$0B$0.5B$1B$1.5B$2B 202220232024 $1.61B $0.6B ▼ -62.7%
Total plan assets by year, all Southwest Gas Corporation 401(k) plans on file
Year Plans Participants Total Assets
2022 2 4,473 $1.6B
2023 2 4,386 $1.7B
2024 1 2,387 $600M

Nearby Defined Benefit (Pension) Plans in Nevada

Peer Defined Benefit (Pension) plans, same state, same plan type, ranked by total assets.

Retirement Plan for Employees of Southwest Gas Corporation vs. nearby Defined Benefit (Pension) plans in Nevada, assets vs. participants

Retirement Plan for Employees of Southwest Gas Corporation vs. nearby Defined Benefit (Pension) plans in Nevada, assets vs. participants Scatter plot of 6 data points. 050001000015000 0.40.60.811.21.4 Total assets ($B) Participants Retirement Plan for …Eighth District Elec…United Brotherhood o…Nv Energy Retirement…Construction Industr…Mission Support and …
Retirement Plan for Employees of Southwest Gas Corporation vs. nearby Defined Benefit (Pension) plans in Nevada, assets vs. participants

Similar-Sized Defined Benefit (Pension) Plans Nationally

Defined Benefit (Pension) plans in other states closest to Retirement Plan for Employees of Southwest Gas Corporation by total assets, not by location.

Frequently Asked Questions

How much money is in the Retirement Plan for Employees of Southwest Gas Corporation?
As of the 2023 Form 5500 filing, Retirement Plan for Employees of Southwest Gas Corporation holds $1.2B in total assets with 2,020 participants. It is sponsored by Southwest Gas Corporation.
What type of plan is Retirement Plan for Employees of Southwest Gas Corporation?
Retirement Plan for Employees of Southwest Gas Corporation is a Defined Benefit (Pension) plan. It has been effective since 1971-08-01. The plan is filed with the U.S. Department of Labor under EIN 880085720.
Who sponsors the Retirement Plan for Employees of Southwest Gas Corporation?
Retirement Plan for Employees of Southwest Gas Corporation is sponsored by Southwest Gas Corporation, located in Nevada. The sponsor's EIN is 880085720 and the plan operates in the Utilities industry.
How did Retirement Plan for Employees of Southwest Gas Corporation perform in 2023?
Retirement Plan for Employees of Southwest Gas Corporation edged up modestly - up 2.9% during 2023, moving from $1.2B to $1.2B in total assets. Net income was $33M.

What this filing means

Ways to act on Retirement Plan for Employees of Southwest Gas Corporation's numbers.

  • By total assets, Retirement Plan for Employees of Southwest Gas Corporation ranks among the largest 1% of all filed plans. See the largest plans
  • Compare it side-by-side against 3 similar Defined Benefit (Pension) plans in Nevada. Compare plans
  • Southwest Gas Corporation's sponsor-wide assets have declined 62.9% since 2022 across 3 plan years on file. More Utilities plans
  • A Defined Benefit (Pension) plan works differently from other retirement plan types, understand the structural differences before comparing. Compare plan types

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 880085720.

Reference: IRS Publication 560, Retirement Plans for Small Business, contribution-limit rules.

Reference: IRS Publication 590-B, Distributions from IRAs, RMD rules under SECURE Act 2.0.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.

Every figure on PlainRetire is rendered directly from the Department of Labor's Form 5500 annual return filings, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-07-24.