Path-Q Solar
How should an optimizer system be evaluated when shade moves across the array during the day?
Answer
Evaluate the system using time-based shade analysis and compare modeled annual production, not just the percentage of shade at one moment. Optimizers may reduce mismatch losses, but they cannot eliminate energy blocked by shade.
Key points
- Moving shade can affect different modules at different times and may change the value of module-level power electronics.
- Compare the optimizer design with alternatives such as different module placement, string layouts, or microinverters.
- The benefit depends on shade pattern, module orientation, electrical architecture, and system controls.
What it depends on
- Hourly or time-resolved shade profile
- Array orientation, tilt, and string configuration
- Optimizer operating limits and compatibility
- Modeled production with and without the equipment
Risks and trade-offs
- Optimizers add components, cost, and potential future service points.
- A production model may overstate benefits if the shade study is coarse or assumptions are unverified.
- Module-level electronics do not compensate for major obstruction or poor site placement.
Information you may need
- Shade study showing timing and affected modules
- Production simulations for competing system designs
- Equipment compatibility, warranty, and monitoring details
Your next step
What to do next
Request side-by-side production and cost modeling based on the array's hourly shade pattern, including an explanation of what losses the optimizer is expected to reduce.
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SQ02436