Source Sought Notice

Naval Facilities Engineering Systems Command Europe, Africa, Central (NAVFAC EURAFCENT) is issuing a sources sought notice to identify commercially available programmable building controllers compatible with existing Siemens equipment and Siemens Desigo software at Naval Station Rota, Spain, with responses due by 2:00 PM EST on September 17, 2026. This is a market research notice only and does not constitute a request for proposal, commitment to contract, or promise of award.

NAVFAC is developing a justification and approval (J&A) under 10 U.S.C. 3204(a)(1) to permit sole-source or limited-source standardization around Siemens brand equipment, justified primarily on cybersecurity enhancement per NAVFACINST 11000.2a, system interoperability, personnel training cost reduction, and total cost of ownership efficiency. Vendors wishing to propose alternate compatible sources must demonstrate that their programmable controllers—including network controllers and routers, digital controllers, zone controllers, VAV controllers, unitary and equipment controllers, and expansion modules—can be configured and programmed using Siemens Desigo software and support BACnet and/or Modbus TCP/IP communications protocols.

Responses must include manufacturer identification and country of manufacture, fully detailed specification sheets, and a narrative explaining product compatibility. Vendors should also document one to three installed systems where Siemens Desigo successfully configured non-Siemens digital controllers for HVAC applications, including customer contact information and project details. Place of performance is Naval Station Rota, Spain. The applicable NAICS code is 334512 (Automatic Environmental Control Manufacturing); PSC is Z2AZ. Responses should be submitted electronically to Deo Solis, Contracting Officer, at deogracias.c.solis.civ@us.navy.mil. No debrief, evaluation letters, or results will be issued to respondents.