Black Hills 401(k) and pension plans

Black Hills Corporation, Rapid City, SD. EIN 46-0458824. Annual reports 2009–2025. Also filed as Sourcegas LLC.

Black Hills Corporation has 2 active retirement plans on file. The largest is the Black Hills Corporation 401(k) Retirement Savings Plan, with 3,686 participants and $934 million in assets in 2025. Schwab has been its recordkeeper since 2009.

Active plans: 2
Participants: 5,289
Plan assets: $1.2 billion
401(k) recordkeeper: Schwab
Plans on file: 8
Industry: Utilities

All 8 plans

Active plans first

Black Hills Corporation 401(k) Retirement Savings Plan

401(k)Active

Active. The plan filed its annual report for the 2025 plan year.

Plan number: 003Employer EIN 46-0458824
Participants (2025): 3,686
Net assets (2025): $934 million
Recordkeeper: Schwab2009–2025
Plan administrator: Black Hills Corporation
Po Box 1400
Rapid City, SD 57709
(605) 721-1700As filed for 2025
In effect since: July 1, 1982

Plans merged into this one: Black Hills Utility Holdings, Inc Retirement Savings Plan (2009); Cheyenne Light, Fuel & Power Company Retirement Savings Plan (2009); Sourcegas Retirement Savings Plan (2017).

Earlier plan names: Black Hills Corporation Retirement Savings Plan.

Year by year, 2009 to 2025

Plan year	Participants	Net assets	Recordkeeper
2025	3,686	$934 million	Schwab
2024	3,699	$811 million	Schwab
2023	3,744	$727 million	Schwab
2022	3,789	$615 million	Schwab
2021	3,618	$725 million	Schwab
2020	3,687	$647 million	Schwab
2019	3,597	$553 million	Schwab
2018	3,485	$449 million	Schwab
2017	2,404	$473 million	Schwab
2016	2,324	$310 million	Schwab
2015	2,317	$275 million	Schwab
2014	2,103	$266 million	Schwab
2013	2,247	$240 million	Schwab
2012	2,221	$195 million	Schwab
2011	2,323	$165 million	Schwab
2010	2,352	$153 million	Schwab
2009	2,381	$121 million	Schwab

Black Hills Retirement Plan

Cash balance pensionActive

Active. The plan filed its annual report for the 2025 plan year.

Plan number: 006Employer EIN 46-0458824
Participants (2025): 1,603
Net assets (2025): $276 million
Plan administrator: Benefits Committee
P.O. Box 1400
Rapid City, SD 57709
(800) 789-6544As filed for 2025
In effect since: July 14, 2008

Plans merged into this one: Sourcegas Retirement Plan (2016); Pension Plan of Black Hills Corporation (2016).

Earlier plan names: Black Hills Utility Holdings Inc Pension Plan; Black Hills Utility Holdings, Inc. Pension Plan.

Year by year, 2009 to 2025

Plan year	Participants	Net assets	Recordkeeper
2025	1,603	$276 million	not listed
2024	1,639	$272 million	not listed
2023	1,816	$311 million	not listed
2022	2,045	$323 million	not listed
2021	2,248	$458 million	not listed
2020	2,424	$474 million	not listed
2019	2,679	$447 million	not listed
2018	3,282	$403 million	not listed
2017	3,341	$429 million	not listed
2016	3,429	$392 million	not listed
2015	1,918	$183 million	not listed
2014	1,944	$189 million	not listed
2013	2,017	$174 million	not listed
2012	2,312	$170 million	not listed
2011	2,347	$150 million	not listed
2010	2,379	$143 million	not listed
2009	2,428	$124 million	not listed

Sourcegas Retirement Savings Plan

401(k)Merged

Merged. In 2017 its assets moved to the Black Hills Corporation Retirement Savings Plan, sponsored by Black Hills Corporation (EIN 46-0458824, plan 003). Accounts moved with them, so that plan is the one to contact.

Plan number: 010Employer EIN 87-0782723
Participants (2016): 1,129
Net assets (2016): $94.1 million
Recordkeeper: SchwabEarlier: Fidelity (2009–2015)
Plan administrator: Black Hills Corporation
Po Box 1400
Rapid City, SD 57709
(605) 721-1700As filed for 2017
In effect since: April 16, 2007

Earlier sponsor: Sourcegas LLC (2009–2014).

Year by year, 2009 to 2017

Plan year	Participants	Net assets	Recordkeeper
2017	0	$0	Schwab
2016	1,129	$94.1 million	Schwab
2015	1,321	$102 million	Fidelity
2014	1,273	$103 million	Fidelity
2013	1,233	$98.9 million	Fidelity
2012	1,152	$81.0 million	Fidelity
2011	1,152	$71.4 million	Fidelity
2010	1,097	$70.3 million	Fidelity
2009	1,043	$60.8 million	Fidelity

Sourcegas Retirement Plan

Cash balance pensionMerged

Merged. In 2016 its assets moved to the Black Hills Utility Holdings Inc Pension Plan, sponsored by Black Hills Corporation (EIN 46-0458824, plan 006). Accounts moved with them, so that plan is the one to contact.

Plan number: 009Employer EIN 46-0458824
Participants (2015): 474
Net assets (2015): $62.0 million
Plan administrator: Black Hills Corporation
Po Box 1400, 625 Ninth Street
Rapid City, SD 57709
(605) 721-1700As filed for 2016
In effect since: April 1, 2007

Earlier sponsor: Sourcegas LLC (2009–2015).

Year by year, 2009 to 2016

Plan year	Participants	Net assets	Recordkeeper
2016	0	$0	not listed
2015	474	$62.0 million	not listed
2014	481	$56.3 million	not listed
2013	494	$53.0 million	not listed
2012	507	$44.5 million	not listed
2011	523	$38.4 million	not listed
2010	545	$39.7 million	not listed
2009	569	$36.9 million	not listed

Pension Plan of Black Hills Corporation

Cash balance pensionMerged

Plan number: 001Employer EIN 46-0458824
Participants (2015): 1,102
Net assets (2015): $115 million
Last listed administrator: Mercer2009
Plan administrator: Black Hills Corporation
P.O. Box 1400
Rapid City, SD 57709
(605) 721-1700As filed for 2016
In effect since: August 27, 1947

Plans merged into this one: Cheyenne Light, Fuel and Power Company Pension Plan (2011).

Earlier plan names: Pension Plan of Black Hill Corporation.

Year by year, 2009 to 2016

Plan year	Participants	Net assets	Recordkeeper
2016	0	$0	not listed
2015	1,102	$115 million	not listed
2014	1,129	$121 million	not listed
2013	1,183	$117 million	not listed
2012	1,273	$111 million	not listed
2011	1,172	$105 million	not listed
2010	1,217	$87.4 million	not listed
2009	1,243	$79.9 million	Mercer

Cheyenne Light, Fuel and Power Company Pension Plan

Pension (defined benefit)Merged

Merged. In 2011 its assets moved to the Pension Plan of Black Hills Corporation, sponsored by Black Hills Corporation (EIN 46-0458824, plan 001). Accounts moved with them, so that plan is the one to contact.

Plan number: 005Employer EIN 46-0458824
Participants (2010): 111
Net assets (2010): $4.8 million
Last listed administrator: Mercer2009
Plan administrator: Black Hills Corporation
625 9TH Street
Rapid City, SD 57701
(605) 721-1700As filed for 2011
In effect since: January 22, 2005

Earlier plan names: Cheyenne Light Fuel and Power Company Pension Plan.

Year by year, 2009 to 2011

Plan year	Participants	Net assets	Recordkeeper
2011	0	n/a	not listed
2010	111	$4.8 million	not listed
2009	110	$4.3 million	Mercer

Black Hills Utility Holdings, Inc Retirement Savings Plan

401(k)Merged

Merged. In 2009 its assets moved to the Black Hills Corporation Retirement Savings Plan, sponsored by Black Hills Corporation (EIN 46-0458824, plan 003). Accounts moved with them, so that plan is the one to contact.

Plan number: 007Employer EIN 46-0458824
Recordkeeper: Schwab2009
Plan administrator: Black Hills Corporation
625 Ninth Street
Rapid City, SD 57701
(605) 721-1700As filed for 2009
In effect since: July 14, 2008

Cheyenne Light, Fuel & Power Company Retirement Savings Plan

401(k)Merged

Plan number: 004Employer EIN 46-0458824
Plan administrator: Black Hills Corporation
625 Ninth Street
Rapid City, SD 57709
(605) 721-1700As filed for 2009
In effect since: January 22, 2005

If you had money in one of these plans

Call Schwab (schwab.com), which runs the Black Hills Corporation 401(k) Retirement Savings Plan. With your Social Security number and the plan name, it can tell you whether you still have a balance and, if not, where it went.
Or call the plan administrator listed on the plan below ((605) 721-1700). That number was filed for 2025; ask for the benefits or retirement plan office.
If your plan was merged, your account moved with it. Follow the link on the plan to the plan it went into, and contact that one.
Still stuck? The Department of Labor's benefits advisers help for free: askebsa.dol.gov or 1-866-444-3272. Never pay anyone to find your own money.

What these numbers are

They come from the Form 5500 annual reports each plan files with the Department of Labor, as the plan filed them. A plan year is usually a calendar year.
Participants counts everyone in the plan at year end: current employees, former employees who still have a balance or a pension coming, and retirees or beneficiaries being paid.
The recordkeeper is the service provider whose Schedule C entry says it keeps the plan's records. Small plans do not file Schedule C, so some plans show none.
We cannot see anyone's account. Only the plan or its recordkeeper can tell you your balance.

Sources: U.S. Department of Labor, Form 5500 datasets and PBGC trusteed plans. How we read them.

All 8 plans

Black Hills Corporation 401(k) Retirement Savings Plan

Black Hills Retirement Plan

Sourcegas Retirement Savings Plan

Sourcegas Retirement Plan

Pension Plan of Black Hills Corporation

Cheyenne Light, Fuel and Power Company Pension Plan

Black Hills Utility Holdings, Inc Retirement Savings Plan

Cheyenne Light, Fuel & Power Company Retirement Savings Plan

If you had money in one of these plans

What these numbers are

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