The cost of a curtain wall system can vary widely depending on several factors, but as a general estimate: Standard Glass Curtain Walls: $25 to $75 per square foot. Customized High-End Systems: $200 or more per square foot.
On average, you may expect costs ranging from $2,000 to $10,000 or more, influenced significantly by design, materials, and manufacturer characteristics. These values can be further adjusted for regional economics and installation expenses.
They are defined in IEC 61724-1:2021 and are used by asset owners, operators, and independent engineers to detect underperformance, benchmark plants, and fulfill contractual obligations. Two primary indicators are in common use: Performance ratio (PR) and Energy performance index.