bridges elementary school

The Bridges Elementary School solar project in Sauk City Wisconsin is a 200 kW ballasted rooftop installation delivered for the Sauk Prairie School District. Awarded through a competitive bidding process, Westphal & Company served as the EPC contractor, providing engineering, procurement and construction services for the full system. Racking, ballast, modules and balance of system components were craned to the roof, with ballast stone swept away from beneath the racking before placement. The racking and ballast block were set directly on the roof membrane to support the ballasted array design.

Once the mechanical installation was complete, Westphal’s team installed the solar modules and routed all DC wiring to the inverters. From the inverters, AC power is delivered to the school’s main distribution panel to help offset power purchased from the local utility. Two Sauk City graduates worked on the project as electrical apprentices, providing a direct connection between the school community and the installation. The system was completed in the summer of 2025, and a ribbon cutting held on September 9, 2025 celebrated the activation of the new rooftop solar array.

Key Project Highlights

• 200 kW ballasted rooftop solar array in Sauk City, Wisconsin
• EPC delivery by Westphal & Company for the Sauk Prairie School District
• Materials craned to the roof, with ballast stone cleared prior to racking placement
• DC wiring routed to inverters, with AC power tied into the school’s main distribution panel
• Involvement of two Sauk City graduates as electrical apprentices during construction
• System completed in summer 2025, with a ribbon cutting on September 9, 2025