1. What Are Fixed and Tracking Brackets?
- Fixed Brackets: These systems hold solar panels at a predetermined tilt angle and orientation, usually optimized for the region’s annual sun path. They are simple, sturdy, and widely used in both residential and commercial rooftop systems.
- Tracking Brackets: These structures enable panels to follow the sun throughout the day. They can be:
- Single-axis (horizontal or vertical movement)
- Dual-axis (horizontal and vertical movement)
Tracking systems dynamically adjust panel positioning for maximum sunlight exposure.
2. Power Generation Efficiency
| Mount Type | Energy Output Gain | Notes |
| Fixed Bracket | Baseline | Optimized once for yearly conditions |
| Single-Axis Tracker | +15% to +25% | Follows sun’s daily east–west path |
| Dual-Axis Tracker | +30% to +40% | Follows both seasonal and daily path |
Key Insight: While fixed brackets work well in many scenarios, tracking systems significantly boost yield—especially in high DNI (Direct Normal Irradiance) regions.
3. Cost and Maintenance
| Factor | Fixed Brackets | Tracking Brackets |
| Initial Cost | Low | High (mechanical components, actuators) |
| O&M Cost | Very low | Moderate to high (moving parts require care) |
| Lifespan | 25–30 years | ~20–25 years (subject to motor lifespan) |
Tracking systems introduce complexity and require periodic checks, whereas fixed systems are largely maintenance-free.
4. Space and Installation Considerations
Fixed Systems:
- Ideal for rooftops and constrained spaces.
- Can be installed in rows with minimal spacing.
Tracking Systems:
- Require more space to avoid shading between moving rows.
- Primarily suitable for large-scale ground-mounted solar farms.
Tip: For residential projects, fixed brackets are generally more practical unless space and budget allow for tracking.
5. Return on Investment (ROI)
| Parameter | Fixed Brackets | Tracking Brackets |
| CAPEX | Lower | Higher |
| Annual Energy Yield | Moderate | Significantly higher |
| Payback Period (est.) | 6–8 years | 8–10 years |
| Ideal Project Size | Any size | Medium to large scale |
Conclusion: Tracking brackets offer higher output but are best suited for regions with consistent sunlight and large land availability.
6. When to Choose Which?
| Scenario | Recommendation |
| Small rooftop residential system | ✅ Fixed Bracket |
| Budget-sensitive projects | ✅ Fixed Bracket |
| High irradiance regions | ✅ Single/Dual-Axis Tracker |
| Utility-scale ground-mounted system | ✅ Tracking System |
| Areas with space constraints | ✅ Fixed Bracket |