The U.S. Department of State is seeking qualified firms for a design-build contract to perform utility optimization and façade repair at the U.S. Embassy in Ljubljana, Slovenia. The project includes installing solar carports with a photovoltaic system, interior system improvements, and restoring the historic façade, with an estimated construction cost between $11 million and $18 million. Work must be performed on an operational embassy compound located in a UNESCO World Heritage zone, requiring secret facility and personnel security clearances. All submissions must be received by 3:00 p.m. Eastern Time on June 29, 2026. This is a sources sought notice for market research only, not a solicitation.