Skip to content
Nonprofiteer
← All organizations

SOUTHEASTERN ELECTRIC COOPERATIVE INC

EIN 46-0454373 LENNOX, SD

Largest nonprofits in South Dakota

Revenue 2025
$96,007,173
Expenses 2025
$96,007,173

As filed

Subsection
12
NTEE code
Y22
Classification
4000
Street
47077 276TH ST

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Mission and programs · 2025

Mission

MEMBER FOCUSED. MEMBER DRIVEN. AS A NON-PROFIT ELECTRIC COOPERATIVE, WE ARE HERE TO SERVE THE MEMBERS OF THE COOPERATIVE WITH RELIABLE, QUALITY AND AFFORDABLE ELECTRIC SERVICE AND TO DO THAT WE ARE FOCUSED ON THEIR NEEDS AND DESIRES.

Activities or mission (Part I)

PROVIDING ELECTRIC SERVICE TO MEMBER-CONSUMERS.

  • PROVIDING ELECTRIC SERVICE TO APPROXIMATELY 20,718 MEMBER-CONSUMERS OVER 4,640 MILES OF LINE.

As filed on the 2025 return.

Officers and directors · 2025

As listed in Part VII of the 2025 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • Steve Holmberg

    PRESIDENT

    Total calculated
    $14,455
    From this org
    $14,455
    From related orgs
    $0
    Other
    $0
    Hours/week
    5.4

  • Robert Wollmann

    VICE PRESIDENT

    Total calculated
    $16,180
    From this org
    $16,180
    From related orgs
    $0
    Other
    $0
    Hours/week
    8.7

  • Daryl Terveen

    TREASURER

    Total calculated
    $12,605
    From this org
    $12,605
    From related orgs
    $0
    Other
    $0
    Hours/week
    5.4

  • Johnathan Wildeboer

    SECRETARY

    Total calculated
    $13,680
    From this org
    $13,680
    From related orgs
    $0
    Other
    $0
    Hours/week
    5.8

  • Don Heeren

    DIRECTOR

    Total calculated
    $12,780
    From this org
    $12,780
    From related orgs
    $0
    Other
    $0
    Hours/week
    5.8

  • Chris Hofer

    DIRECTOR

    Total calculated
    $8,742
    From this org
    $8,742
    From related orgs
    $0
    Other
    $0
    Hours/week
    2.6

  • Carlos Hofer

    DIRECTOR

    Total calculated
    $14,055
    From this org
    $14,055
    From related orgs
    $0
    Other
    $0
    Hours/week
    4.9

  • John Ostraat

    DIRECTOR

    Total calculated
    $10,230
    From this org
    $10,230
    From related orgs
    $0
    Other
    $0
    Hours/week
    4.2

  • Donovan Kost

    DIRECTOR

    Total calculated
    $17,880
    From this org
    $17,880
    From related orgs
    $0
    Other
    $0
    Hours/week
    8

  • Jon Wunder

    CFO

    Total calculated
    $237,758
    From this org
    $171,232
    From related orgs
    $0
    Other
    $66,526
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $170,519
    Bonus
    $0
    Other
    $713
    Deferred
    $23,693
    Nontaxable benefits
    $46,420
    Filer's total
    $241,345

  • Chad Kinsley

    CEO

    Total calculated
    $450,468
    From this org
    $347,033
    From related orgs
    $0
    Other
    $103,435
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $344,330
    Bonus
    $0
    Other
    $2,703
    Deferred
    $66,827
    Nontaxable benefits
    $42,457
    Filer's total
    $456,317

  • John Euchner

    VP OF OPERATIONS & ENGINEE

    Total calculated
    $322,816
    From this org
    $196,128
    From related orgs
    $0
    Other
    $126,688
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $193,146
    Bonus
    $0
    Other
    $2,982
    Deferred
    $89,956
    Nontaxable benefits
    $40,747
    Filer's total
    $326,831

  • Todd Nelson

    VP OF INFORMATION TECHNOLOGY

    Total calculated
    $239,476
    From this org
    $178,516
    From related orgs
    $0
    Other
    $60,960
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $171,558
    Bonus
    $0
    Other
    $6,958
    Deferred
    $23,353
    Nontaxable benefits
    $41,260
    Filer's total
    $243,129

  • Duane Pulse

    LINE SUPERINTENDENT

    Total calculated
    $227,912
    From this org
    $143,212
    From related orgs
    $0
    Other
    $84,700
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $142,725
    Bonus
    $0
    Other
    $487
    Deferred
    $47,425
    Nontaxable benefits
    $39,985
    Filer's total
    $230,622

  • Robert Kalda

    LINE SUPERINTENDENT

    Total calculated
    $202,149
    From this org
    $143,155
    From related orgs
    $0
    Other
    $58,994
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $141,111
    Bonus
    $0
    Other
    $2,044
    Deferred
    $19,624
    Nontaxable benefits
    $42,251
    Filer's total
    $205,030

  • Troy Peters

    LINE SUPERINTENDENT

    Total calculated
    $212,777
    From this org
    $156,165
    From related orgs
    $0
    Other
    $56,612
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $154,172
    Bonus
    $0
    Other
    $1,993
    Deferred
    $14,799
    Nontaxable benefits
    $44,634
    Filer's total
    $215,598

  • Adam Stark

    LINE SUPERINTENDENT

    Total calculated
    $218,898
    From this org
    $139,373
    From related orgs
    $0
    Other
    $79,525
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $138,943
    Bonus
    $0
    Other
    $430
    Deferred
    $37,276
    Nontaxable benefits
    $45,029
    Filer's total
    $221,678

Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. A Schedule J breakdown is as filed: base pay, bonus, other, deferred compensation and nontaxable benefits from this organization, with any from related organizations beside each, and the filer's own total. It is shown with the Part VII listing of the same name on the same return. The form gives no key between the two, so that pairing is ours, and is marked matched by us. Earlier years are each on their own filing page.

Filings

  • 2025
    Revenue
    $96,007,173
    Expenses
    $96,007,173
    Contributions
    $0
    Grants paid
    $58,395
  • 2024
    Revenue
    $87,619,989
    Expenses
    $87,619,989
    Contributions
    $0
    Grants paid
    $57,154
  • 2023
    Revenue
    $81,602,377
    Expenses
    $81,602,377
    Contributions
    $0
    Grants paid
    $50,577
  • 2022
    Revenue
    $76,912,343
    Expenses
    $76,912,343
    Contributions
    $0
    Grants paid
    $49,502

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Other returns filed

  • 2021 · 990

    Revenue
    $71,615,783
    Expenses
    $71,615,783
    Assets (EOY)
    $202,199,401

  • 2020 · 990

    Revenue
    $64,131,933
    Expenses
    $64,131,933
    Assets (EOY)
    $188,239,253

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all.

Grants made

  • HARRISBURG COMMUNITY FOUNDATION

    $7,000

    2024 YOUTH BALL FIELDS ADDITION

  • FORWARD SIOUX FALLS

    $6,666

    2022 GENERAL SUPPORT

  • FORWARD SIOUX FALLS

    $6,666

    2023 GENERAL SUPPORT

  • FORWARD SIOUX FALLS

    $6,600

    2025 GENERAL SUPPORT

  • FORWARD SIOUX FALLS

    $6,600

    2024 GENERAL SUPPORT

Where these grants went next →

Grants received

No itemized grant names this organization as a recipient. Only grants over $5,000 are itemized, and only by filers of the full Form 990.

Related organizations

From Schedule R Part II, where a filer lists the tax-exempt organizations it is related to by control. It does not record shared board members or money.

Declared as related by

Other IRS files

Auto-Revocation List

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

Publication 78

Not present in the most recent drop.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.

What this page reflects

The registration facts above come from the IRS Business Master File published 13 October 2026 and read 1 November 2026, for every organization at once. Returns through tax year 2025, the newest we have parsed for this organization.