The U.S. Army Corps of Engineers intends to issue a solicitation for the construction of the Redstone Arsenal Airfield Microgrid – Electric Power, Photovoltaic Project. It plans to include a sole-source brand name requirement for Schweitzer Engineering Laboratories (SEL) protective relays and controllers. Interested parties who believe they can meet this specific requirement may submit a capability statement for consideration. The performance location is the Redstone Arsenal Airfield. Capability statements must be received by 1:00 PM ET on April 22, 2026.