Siemens Energy Inc.

Siemens Energy Inc., doing business as Siemens Winston Service Center, is a foreign-owned manufacturer and original equipment manufacturer (OEM) service provider that supplies gas turbine spare parts, maintenance and repair services, and equipment overhaul work to civilian federal agencies as a prime contractor (97% of awards) competing under full-and-open procurement. The company is a subsidiary of Siemens Aktiengesellschaft and maintains headquarters at 4400 N Alafaya Trail, Oviedo, Florida, with performance locations in Orlando, Florida and Bethesda, Maryland for its primary federal work.

Siemens Energy's federal footprint centers on specialized OEM services and spare parts for Siemens-manufactured power generation and electrical grid equipment. The company operates predominantly under a single large IDIQ vehicle—Indefinite Delivery Contract 75N99020D00022 with the National Institutes of Health Construction division—through which it has delivered 27 task orders worth $17.5 million in combined potential value. Representative prime work includes a $3 million C-level major overhaul of an NIH SGT-600 gas turbine (delivered December 2022), a $2.87 million delivery order for repairable hot section parts for a cogeneration gas turbine system at NIH (awarded December 2025), a $663 thousand 90-day emergency maintenance support contract for cogeneration gas turbine systems (awarded July 2025), a $939 thousand modification for C-level inspection and gearbox replacement services at NIH (awarded September 2025), and a $3.1 million sole-source contract with the Department of Energy's Office of International Affairs to procure and deliver electrical grid equipment to Ukraine (awarded March 2023). Task orders under the NIH IDIQ cover emissions tuning, bearing replacement, compressor blading provision, exhaust crack welding, remote diagnostic services, and generator protection system upgrades for Siemens SGT-600 turbines supporting NIH's biomedical research infrastructure.

Customer concentration is extreme. The National Institutes of Health Construction division accounts for 67% of all awards in the source dataset (27 awards, $37.4 million combined potential value), with the Department of Energy placing a distant second at 22 awards and $8 million combined value. The two customer rankings diverge sharply by dollar magnitude: while NIH dominates both volume and dollars, the Department of Energy's National Energy Technology Lab anchors a single $5.4 million award. Western Area Power Administration and the Federal Energy Regulatory Commission together account for eight and six awards respectively but carry negligible combined potential value ($547 thousand and $174 thousand). NASA and the Department of Transportation round out the customer set with occasional spare parts purchase orders and a $400 thousand FAA Sustainable Aviation Fuels grant.

Beyond the dominant NIH IDIQ vehicle, Siemens Energy holds a second smaller indefinite delivery contract (00P6D39497D001) supporting two task orders, and competes in full-and-open for purchase orders with the Department of Energy's Western Area Power Administration for electrical grid equipment and breaker parts, the NASA Shared Services Center for vacuum blower spare parts (most recent award: $27 thousand in August 2026), and Military Sealift Command for generator and breaker repair services at overseas locations.

Siemens Energy's federal grant work emphasizes energy technology development and decarbonization. The company holds a $400 thousand FAA grant (CFDA 20.115, awarded December 2024) for supply chain scoping studies of sustainable aviation fuel and low-emission aviation technologies. Three Department of Energy Office of Energy Efficiency and Renewable Energy cooperative agreements, awarded October 2023, support advancement of turbocracker technology to technology readiness level 6 for decarbonizing chemicals manufacturing, electrification of heating for industrial steam applications, and development of advanced modular high-temperature heat pump systems. Siemens Energy also acts as a sub-recipient on two federal grants: a Georgia Tech-led project (award date September 2025, ~$1.35 million over 36 months including cost share) providing SCADA-EMS domain expertise and software for grid security and sustainability, and a University of Kentucky Research Foundation project (award date June 2025) on low-carbon direct iron production using chemical looping for steel decarbonization.

In its limited subcontractor role, Siemens Energy subcontracts to Boeing on developmental hardware and manufacturing work for the Ares I upper stages (sub-award noted August 2023), representing aerospace propulsion and structural assembly support outside its core civilian energy infrastructure focus.

Activity has remained relatively flat year over year—ranging from eight to eleven awards annually over the past five years—with only five awards (combined potential value $3 million) reaching ultimate completion within the next twenty-four months, indicating minimal near-term recompete exposure. The source dataset spans awards from 1988 forward, with combined dollars obligated ($451.3 million) substantially exceeding combined potential value ($55.7 million), suggesting historical work under larger contracts now closed or modified. NAICS and PSC concentration reflects the company's OEM posture: Facilities Support Services account for 28 awards, Maintenance/Repair/Rebuild of Equipment-Engines, Turbines, and Components for 27 awards, and Software Publishers for 10 awards, signaling mixed equipment-service and software-as-a-service delivery models alongside turbine manufacturing and component work.