CSLB C-46 Solar ContractorPlanning and EstimatingEasy
A C-46 contractor is conducting a site analysis for a ground-mounted PV system in a rural area. The property has several mature trees and a small pond. Which of the following is the most critical factor to assess first when determining the optimal location for the array?
- APotential for shading throughout the year.
- BProximity to the utility interconnection point.
- CSoil composition for foundation stability.
- DAccessibility for construction and maintenance equipment.
Show answer & explanationAnswer & explanation
Correct answer: A. Potential for shading throughout the year.
Shading is the single most detrimental factor to PV system performance. Identifying and mitigating potential shading sources is paramount in site analysis before considering other factors, as even minor shading can significantly reduce energy production.
Why the other options are wrong
- B. While important for cost, interconnection proximity is secondary to ensuring adequate sunlight.
- C. Soil composition is crucial for structural integrity but can often be engineered; shading cannot be easily overcome once the array is placed.
- D. Accessibility is important for logistics but does not directly affect the system's energy output as shading does.
Shading Analysis Priority
Shading analysis is the most critical initial step in PV site assessment, as it directly impacts system performance and cannot be easily mitigated after installation.
- Even partial shading can drastically reduce PV output.
- Must consider seasonal and daily sun paths.
- Identifies optimal array placement to maximize energy harvest.
Memory trick: Sunlight is King, shade is the assassin.