Enercon LTD
Evanston, IL Doing business as Grumman / Butkus Associates
- UEI
- T2ZZXFJ31UX1
- CAGE
- 6E9M4
- Primary NAICS
- 541330 Engineering Services
- SAM.gov registration
- Active through
Company facts
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- NAICS codes registered in SAM.gov
- SAM.gov registration date
- Physical address
- 820 Davis St Suite 300, Evanston, IL 60201, USA
- Website
- grummanbutkus.com
- Founded
- 1973
- Employees
- 51-250
- Estimated annual revenue
- $10M-$50M
- Industry
-
- Industrials
- Capital Goods
- Construction & Engineering
- Civil Engineering
- SIC code
- 87 Engineering & Management Services
- Profiles
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Recent federal awards
| Award | Agency | Obligated | Awarded |
|---|---|---|---|
| Uscis security upgrade design, FED bldg, 536 s clark ST, chicago, IL. Design services, post construction contract… | Public Buildings Service | $126,063 | |
| Architect engineer services for domestic water valve replacement, everett mckinley dirksen u.s courthouse, 219 south… | Region 5 | $44,748 | |
| Architect engineer services for preparation of chiller study, carl b. Stokes u.s. Courthouse, cleveland, OH. | Region 5 | $11,255 | |
| Architect engineer, grumman butkus associates, social security administration, sprinkler valve relocation design,… | Region 5 | $24,975 | |
| Architect/engineering services for the canopy drains design project at the everett m. Dirksen u.s. Courthouse, 219 south… | Region 5 | $48,771 |
About Enercon LTD
Enercon LTD, doing business as Grumman / Butkus Associates, is a self-certified small disadvantaged business headquartered in Evanston, Illinois that delivers architectural and engineering design services for federal facility modernization, infrastructure upgrades, and building systems studies as a prime contractor (100% of recent awards) under GSA regional IDIQ vehicles.
The firm's capability portfolio centers on mechanical, electrical, and plumbing (MEP) systems design, HVAC test and balance, energy consulting, and sustainable design solutions for federal buildings. Representative recent work includes a $390,406 delivery order from GSA Region 5 for domestic water pipes replacement design at the Anthony J. Celebrezze Federal Building in Cleveland, Ohio; a $231,930 order for HVAC system retro-commissioning design at the P.V. McNamara Federal Building in Detroit, Michigan; a $284,865 order for high purity water system design at the FDA Forensic Chemistry Center in Cincinnati, Ohio; and a $227,601 order for interior lighting replacement design at the Stanley J. Roszkowski U.S. Courthouse in Rockford, Illinois. Work encompasses design services, post-construction contract services, management and inspection, record documentation, and pre-alteration assessments across the Great Lakes region (Illinois, Indiana, Michigan, Ohio, and Wisconsin).
Customer concentration is heavily skewed to GSA Public Buildings Service Region 5, which accounts for 71 awards and $82.5 million of the combined potential value across all 100 awards (98% coverage by dollar value). Secondary customers include the Social Security Administration (9 awards, $666 thousand), the FDA (1 award, $285 thousand), U.S. Customs and Border Protection (5 awards, $161 thousand), and U.S. Citizenship and Immigration Services (1 award, $126 thousand). The firm has worked with 14 distinct federal agencies overall.
Enercon LTD sits on two parent vehicles: the PBS Region 5 Architectural Engineering Services IDIQ (2016–2021) with 54 task orders carrying $3.8 million combined potential value, and the GSA Region 5 Supplemental Architect and Engineering Services IDIQ (2020–2025, $50 million ceiling) with 41 task orders carrying $3.7 million combined potential value. The firm's recent award activity peaked in 2023 (20 awards) but has slowed significantly — 3 awards in 2025 and 1 to date in 2026 — reflecting maturation of the earlier IDIQ (2016–2021) and a dip in new task order issuance under the current vehicle. Within the next twenty-four months, 11 awards with combined potential value of $1.8 million reach ultimate completion date, creating recompete exposure across multiple facility projects.
The firm competes on both set-aside and full-and-open vehicles, with Partial Small Business and Total Small Business designations appearing on approximately 30% of listed awards; the remainder carry no set-aside. Enercon holds no prime GWACs or government-wide blanket purchase agreements outside the regional GSA vehicles. NAICS activity concentrates on engineering services (56 awards) and architectural services (42 awards), with 94 awards falling under PSC code for Architect and Engineering–Construction: Office Buildings.
Contract vehicles
Quick answers
What is Enercon LTD's UEI?
Enercon LTD's Unique Entity ID (UEI) in SAM.gov is T2ZZXFJ31UX1.
What is Enercon LTD's CAGE code?
Enercon LTD's CAGE code is 6E9M4.
What is Enercon LTD's primary NAICS code?
Enercon LTD's primary NAICS code is 541330 (Engineering Services).
Where is Enercon LTD located?
Enercon LTD's physical address in SAM.gov is 820 Davis St Suite 300, Evanston, IL 60201, USA.
Is Enercon LTD registered in SAM.gov?
Yes. Enercon LTD's SAM.gov registration is active through September 17, 2027.
Which contract vehicles does Enercon LTD hold?
Enercon LTD holds a place on 2 federal contract vehicles, including GSA Region 5 Supplemental Architect and Engineering Services IDIQ 2020-2025 and PBS Region 5 Architectural Engineering Services 2016-2021.
What is Enercon LTD's most recent federal award?
Enercon LTD's most recent federal contract award is Uscis security upgrade design, FED bldg, 536 s clark ST, chicago, IL. Design services, post construction contract… (47PE5426F0058), from Public Buildings Service, on January 27, 2026.
On GovTribe
See Enercon LTD's full federal record
- Federal contract awards
- IDV awards
- Contract vehicles
- Funding analysis by agency, NAICS and set-aside
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