Nonprofit · EIN 54-1733337
ENERGY SYSTEMS INTEGRATION GROUP INC
Tax-exempt · RESTON, VA 20195
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $6,441,697 | $6,052,494 | $389,203 | $10,321,798 | $1,448,339 | $8,873,459 |
| December 31, 2024 | 990 | $5,366,193 | $5,206,539 | $159,654 | $4,436,369 | $1,224,417 | $3,211,952 |
| December 31, 2023 | 990 | $3,146,194 | $3,236,673 | -$90,479 | $4,015,499 | $963,201 | $3,052,298 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $5,281,433
- Membership dues
- $1,576,683
- Program service revenue
- $1,146,889
- Investment income
- $13,375
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $36,200
- Salaries, compensation and benefits (total)
- $0
- Professional fundraising fees
- $0
- Accounting fees
- $75,220
- Travel
- $134,530
- Program services (functional)
- $5,231,290
- Management and general (functional)
- $821,204
Balance sheet and other
- Total assets, start of year
- $4,436,369
- Total assets, end of year
- $10,321,798
- Total liabilities, end of year
- $1,448,339
- Net assets, end of year
- $8,873,459
- Publicly traded securities
- $216,568
- Net assets without donor restrictions
- $1,936,356
- Net assets with donor restrictions
- $6,937,103
- Gross receipts
- $6,441,697
- Employees
- 0
- Volunteers
- 15
- Year formed
- 1994
- State of legal domicile
- VA
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990 for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| MARK AHLSTROM | PRESIDENT Trustee or director, Officer | 1 | $0 |
| BETHANY FREW | SECRETARY Trustee or director, Officer | 1 | $0 |
| RASHID ABDUL | TREASURER Trustee or director, Officer | 1 | $0 |
| CRISTIN LYONS | DIRECTOR Trustee or director | 1 | $0 |
| JENNIFER CURRAN | DIRECTOR Trustee or director | 1 | $0 |
| BJORN HEDGES | DIRECTOR Trustee or director | 1 | $0 |
| KAREN ONARAN | DIRECTOR Trustee or director | 1 | $0 |
| WILLIAM D'HAESELEER | DIRECTOR Trustee or director | 1 | $0 |
| RICK O'CONNELL | DIRECTOR Trustee or director | 1 | $0 |
| AIDAN TUOHY | DIRECTOR Trustee or director | 1 | $0 |
| STEPHEN MARTZ | DIRECTOR Trustee or director | 1 | $0 |
| JEFF BLADEN | DIRECTOR Trustee or director | 1 | $0 |
| LIZ COOK | DIRECTOR Trustee or director | 1 | $0 |
| VIRGINIA LACY | DIRECTOR Trustee or director | 1 | $0 |
| WILLIAM KAUL | CONSULTANT Trustee or director | 1 | $0 |
990 for the year ended December 31, 2024: 16 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| MARK AHLSTROM | PRESIDENT Trustee or director, Officer | 1 | $0 |
| OBADIAH BARTHOLOMY | VICE-PRESIDENT Trustee or director, Officer | 1 | $0 |
| BETHANY FREW | SECRETARY Trustee or director, Officer | 1 | $0 |
| RASHID ABDUL | TREASURER Trustee or director, Officer | 1 | $0 |
| CRISTIN LYONS | DIRECTOR Trustee or director | 1 | $0 |
| TRACEY KUTNEY | DIRECTOR Trustee or director | 1 | $0 |
| JENNIFER CURRAN | DIRECTOR Trustee or director | 1 | $0 |
| BJORN HEDGES | DIRECTOR Trustee or director | 1 | $0 |
| KAREN ONARAN | DIRECTOR Trustee or director | 1 | $0 |
| WILLIAM D'HAESELEER | DIRECTOR Trustee or director | 1 | $0 |
| RICK O'CONNELL | DIRECTOR Trustee or director | 1 | $0 |
| AIDAN TUOHY | DIRECTOR Trustee or director | 1 | $0 |
| STEPHEN MARTZ | DIRECTOR Trustee or director | 1 | $0 |
| JEFF BLADEN | DIRECTOR Trustee or director | 1 | $0 |
| LIZ COOK | DIRECTOR Trustee or director | 1 | $0 |
| WILL KAUL | CONSULTANT Trustee or director | 1 | $0 |
990 for the year ended December 31, 2023: 14 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| MARK AHLSTROM | PRESIDENT Trustee or director, Officer | 1 | $0 |
| OBADIAH BARTHOLOMY | VICE-PRESIDENT Trustee or director, Officer | 1 | $0 |
| JOE LANG | SECRETARY Trustee or director, Officer | 1 | $0 |
| RASHID ABDUL | TREASURER Trustee or director, Officer | 1 | $0 |
| CRISTIN LYONS | DIRECTOR Trustee or director | 1 | $0 |
| TRACEY KUTNEY | DIRECTOR Trustee or director | 1 | $0 |
| JENNIFER CURRAN | DIRECTOR Trustee or director | 1 | $0 |
| BJORN HEDGES | DIRECTOR Trustee or director | 1 | $0 |
| BETHANY FREW | DIRECTOR Trustee or director | 1 | $0 |
| WILLIAM D'HAESELEER | DIRECTOR Trustee or director | 1 | $0 |
| RIC O'CONNELL | DIRECTOR Trustee or director | 1 | $0 |
| BETH LAROSE | DIRECTOR Trustee or director | 1 | $0 |
| LOLA INFANTE | DIRECTOR Trustee or director | 1 | $0 |
| WILL KAUL | EX OFFICIO | 1 | $0 |
Address and contacts
- Address (IRS master file)
- PO BOX 2787, RESTON, VA 20195-0787
- Principal officer (990 for 2025)
- RYAN WILLIS, PO BOX 2787, RESTON, VA 20195
- Signed the 990
- RYAN WILLIS, DIRECTOR,MARKETING & OPER.
- Phone
- (252) 715-0796
- Website
- www.esig.org
- Return prepared by
- BEST ENTERPRISES INC
Mission
TO ACCELERATE THE DEVELOPMENT AND APPLICATION OF GOOD ENGINEERING AND OPERATIONAL PRACTICES SUPPORTING THE APPROPRIATE INTEGRATION OF ENERGY SYSTEMS, INCLUDING RENEWABLE ENERGY AND ELECTRIC SYSTEMS, FUEL SYSTEMS AND HEAT SYSTEMS.
Program accomplishments
- MEMBERSHIPS SERVICES - TO PROMOTE AND ENHANCE THE ACTIVITIES OF THE MEMBER FIRMS IN PERFORMING THEIR MISSION. THE ORGANIZATION PROVIDES PUBLIC MEETINGS, EDUCATION SEMINARS AND OTHER INFORMATION FORUMS.Expenses $5,195,090 · revenue $6,441,697
- RESEARCH - TO UNDERTAKE SPECIAL INDIVIDUAL RESEARCH PROFECTS OF INTEREST TO MEMBERS.0
- EDUCATION - TO PROVIDE SCHOLARSHIPS AND WAIVER OF FEES TO PROFESSIONAL MEETINGS FOR STUDENTS.Expenses $36,200
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990 on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 54-1733337
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (509(a)(2))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 2006
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Environment (C35)
- Assets (IRS master file)
- $10,321,798
- Income (IRS master file)
- $6,441,697
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $6,441,697 | $6,052,494 | $10,321,798 | XML |
| 990 | December 2024 | $5,366,193 | $5,206,539 | $4,436,369 | IRS |
| 990 | December 2023 | $3,146,194 | $3,236,673 | $4,015,499 | XML |
| 990 | December 2022 | $3,840,259 | $2,939,786 | $4,090,920 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990 | December 2018 | – | – | – | IRS |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 54-1733337).
Questions about ENERGY SYSTEMS INTEGRATION GROUP INC
- What is the EIN of ENERGY SYSTEMS INTEGRATION GROUP INC?
- The employer identification number (EIN) of ENERGY SYSTEMS INTEGRATION GROUP INC is 54-1733337.
- Is ENERGY SYSTEMS INTEGRATION GROUP INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2006.
- Are donations to ENERGY SYSTEMS INTEGRATION GROUP INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does ENERGY SYSTEMS INTEGRATION GROUP INC file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of ENERGY SYSTEMS INTEGRATION GROUP INC due?
- The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did ENERGY SYSTEMS INTEGRATION GROUP INC last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2025.
- Who is the principal officer of ENERGY SYSTEMS INTEGRATION GROUP INC?
- The 990 for the year ended December 31, 2025 names RYAN WILLIS.
- Who are the officers and directors of ENERGY SYSTEMS INTEGRATION GROUP INC?
- The 990 for the year ended December 31, 2025 lists 15 people; 0 received compensation from the organization.
- How much revenue does ENERGY SYSTEMS INTEGRATION GROUP INC have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $6,441,697, expenses of $6,052,494 and total assets of $10,321,798 at year end.
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