Comparing commercial mounting options
Commercial solar can be installed on rooftops, carports, or ground-mounted arrays. Each option has advantages and design considerations tied to available space, structural requirements, shading, and cost.
Quick comparison:
- Rooftop: Utilizes existing roof space, minimizing land use and often lowering permitting complexity; requires roof structural assessment and may face shading from rooftop equipment.
- Carport: Provides shade for vehicles and dual-use of parking areas; often has higher installation cost per watt due to steel structures but adds customer/employee amenity value.
- Ground-mounted: Offers flexibility in tilt and orientation for optimal production; suitable where large open land is available but can have higher permitting, grading, and fencing costs.
Factors to evaluate
- Available contiguous area and surface orientation
- Structural capacity (for rooftops) and wind load design
- Access for maintenance and cleaning
- Local zoning, shading, and environmental constraints
Choosing the right mounting type depends on site-specific goals: maximizing production per dollar, enhancing property value, or adding shade amenities. Integrators often combine types (e.g., rooftop plus carport) to meet energy targets and site constraints.