ENERGY SYSTEMS INTEGRATION GROUP INC

2025 · Form 990 · revenue $6.4M · expenses $6.1M · assets $10.3M

EIN

54-1733337

Address

PO BOX 2787, RESTON, VA 20195-0787

Website

www.esig.org

NTEE code

C35

Exempt type

501(c)(3): charitable, religious, educational, scientific or literary (corporation)

Ruling date

October 2006 (when the IRS recognized its exemption)

IRS status

Exempt (unconditional) (IRS Business Master File) IRS data ↗

Tax-deductible donations

Yes: listed in IRS Publication 78 (public charity) Pub 78 ↗

Foundation status

Public charity, 509(a)(2)

Cross-check

ProPublica Nonprofit Explorer

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.

Each tax year counts once: when a return was amended, only the latest return for that period is used below (superseded returns stay listed, greyed, under Finances).

People paid by the organization

None of the 53 people listed on these returns reported compensation from the organization. They are listed below.

Officers and directors, no compensation reported

53 people listed on the returns with $0 (or no amount) in every compensation column: current people first. Hours are as filed on the latest return each person appears on.

People by year

Highest-paid independent contractors

Who gave

Contributor names are not public for this form type.

Public charities filing Form 990 or 990-EZ report large donors on Schedule B, but the IRS withholds their names and addresses from public copies. Private foundations (990-PF) are different: their contributors are public.

Finances

Newest first. Each filing: its name on one row, its figures on the row beneath. Greyed filings are superseded by a later return for the same period and are left out everywhere else on this page.

Connected to

Organizations that list some of the same people on their returns (officers, directors, key employees on this organization’s latest return), and related organizations it lists on Schedule R.

• GRIDLAB INC Berkeley, CA · 2 people in common (Mark Ahlstrom, Virginia Lacy)

Funders of this organization

7 grantors reported grants to this organization, $6,953,000 in all, tax years 2015 to 2024. Exact: the grantor wrote this organization's EIN. Fuzzy: the grantor wrote only a name (foundations' 990-PF has no EIN field), matched to the same or a near-identical name in the same state; the name as filed is shown. From the latest return for each grantor and year, so amended returns aren't counted twice. CSV

Nearby + Similar BETA

Who funds organizations like this

Grantors that funded the 100 most similar organizations. Ranked by total given to them. Foundations (990-PF) and donor-advised fund sponsors only. Same matching as Funders above (by EIN, or by name for foundations).

The full list · all similar organizations

Where the money went

Every expense line on each return, biggest first: Form 990 Part IX (with its program, management and fundraising columns), 990-EZ Part I, or 990-PF Part I. Event marks lines the organization itself describes as events. “Events” in each summary adds those lines, conferences and meetings, and the direct costs of fundraising events. Unusual is not the same as improper. Many of these patterns have ordinary explanations. Check the filing.

State business registration

• Energy Systems Integration Group, Inc. VA, Nonstock corporation, Active (Active and In Good Standing), formed 1994-10-17

The same business name in the same state, from the state’s official registry data.