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SUSTAINABLE ENERGY UTILITY INC

EIN 26-3963904 DOVER, DE

Browse the largest nonprofits in Delaware

Revenue 2024
$48,748,802
Expenses 2024
$35,292,334

Program services were 95.1% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
C35
Classification
1000
Street
500 W LOOCKERMAN ST STE 400

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 · 2024

Mission

TO SERVE THE SUSTAINABLE ENERGY NEEDS OF ALL DELAWARE ENERGY CONSUMERS USING ALL FUELS.

  • TO OFFER RENEWABLE AND ENERGY-EFFICIENT PROGRAMS THAT HELP DELAWAREANS REDUCE THEIR CARBON FOOTPRINT.

    Expenses $33,574,483 · Grants $5,680,894 · Revenue $5,734,353

  • TO SERVE THE SUSTAINABLE ENERGY NEEDS OF ALL DELAWARE ENERGY CONSUMERS

As filed on the 2024 return. The filer continues this part on Schedule O, which is not shown here.

Officers and directors · 2024

As listed in Part VII of the 2024 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • Senator Harris B McDowell III

    CO-FOUNDER/M

    Total calculated
    $0
  • Kristopher E Knight

    TREASURER/SE

    Total calculated
    $0
  • Michael J Chajes PhD

    BOARD MEMBER

    Total calculated
    $0
  • W Charles Paradee III

    BOARD MEMBER

    Total calculated
    $0
  • Sean Finnigan

    CHAIRMAN

    Total calculated
    $0
  • Stephanie L Hansen

    BOARD MEMBER

    Total calculated
    $0
  • Richard I G Jones Jr

    BOARD MEMBER

    Total calculated
    $0
  • Ric Moore

    BOARD MEMBER

    Total calculated
    $0
  • Drew Slater

    EXECUTIVE DI

    Total calculated
    $135,000
    From this org
    $135,000
    From related orgs
    $0
    Other
    $0
    Hours/week
    40
  • Jameson Tweedie

    BOARD MEMBER

    Total calculated
    $0
  • Greg Patterson

    BOARD MEMBER

    Total calculated
    $0
  • Suzanne Sebastian

    EMPLOYEE

    Total calculated
    $110,711
    From this org
    $110,711
    From related orgs
    $0
    Other
    $0
    Hours/week
    40

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. Earlier years are each on their own filing page.

Filings

  • 2024
    Revenue
    $48,748,802
    Expenses
    $35,292,334
    Contributions
    $39,712,351
    Grants paid
    $5,680,894
  • 2023
    Revenue
    $44,956,278
    Expenses
    $35,165,402
    Contributions
    $33,823,092
    Grants paid
    $13,679,900
  • 2022
    Revenue
    $35,802,665
    Expenses
    $33,792,966
    Contributions
    $24,208,658
    Grants paid
    $12,135,108

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
    $34,793,273
    Expenses
    $18,813,221
    Assets (EOY)
    $151,005,842
  • 2020 · 990

    Revenue
    $22,950,580
    Expenses
    $17,337,155
    Assets (EOY)
    $136,909,835
  • 2019 · 990

    Revenue
    $18,397,638
    Expenses
    $15,232,696
    Assets (EOY)
    $133,777,968
  • 2018 · 990

    Revenue
    $18,676,201
    Expenses
    $12,945,197
    Assets (EOY)
    $132,314,464
  • 2017 · 990

    Revenue
    $15,564,000
    Expenses
    $16,658,169
    Assets (EOY)
    $111,329,506
  • 2016 · 990

    Revenue
    $14,066,691
    Expenses
    $12,068,517
    Assets (EOY)
    $114,149,228
  • 2015 · 990

    Revenue
    $19,504,456
    Expenses
    $9,318,095
    Assets (EOY)
    $115,171,386
  • 2014 · 990

    Revenue
    $23,340,051
    Expenses
    $14,935,064
    Assets (EOY)
    $111,480,079
  • 2012 · 990

    Revenue
    not reported
    Expenses
    $3,694,465
    Assets (EOY)
    $91,411,919
  • 2011 · 990

    Revenue
    not reported
    Expenses
    $11,939,107
    Assets (EOY)
    $89,187,995

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. Showing the 10 most recent; the API carries the rest.

Grants made

  • FRANKLIN ENERGY SERVICES LLC

    $6,470,000

    2022

  • SIEBERLICH TRANE

    $4,057,885

    2023

  • HELP INITIATIVE INC

    $2,091,733

    2022

  • DELAWARE STATE HOUSING AUTHORITY

    $1,500,000

    2024

  • FRANKLIN ENERGY SERVICES LLC

    $1,259,890

    2023

  • MID ATLANTIC CLEAN HYDROGEN HUB IN

    $1,000,000

    2023

  • NEW ECOLOGY INC

    $685,721

    2024

  • NEW ECOLOGY INC

    $672,239

    2023

  • NEW ECOLOGY INC

    $600,379

    2022

  • HELP INITIATIVE INC

    $515,758

    2023

The 10 largest by cash amount. The API serves every itemized grant.

Where these grants went next →

Grants received

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 on its 2024 return

  • STATE OF DELAWARE

    STATE GOV · DE

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

Listed as of 11 November 2026, under deductibility SOUNK.

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 9 November 2026 and read 9 November 2026, for every organization at once. Returns through tax year 2024, the newest we have parsed for this organization.