Sighten‘s solar energy system production model incorporates key aspects of the industry’s most sophisticated models while maintaining simplicity of user inputs. This document summarizes Sighten’s solar production modeling capabilities, which includes an internal production calculator (based on the PVsyst 5 parameter model) and an integration with the PVWatts v6 API.
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Sighten offers several modeling improvements over PVWatts. For example, Sighten's model takes into account shade recovery from optimizers and microinverters, unlike PVWatts. Differences in methodology are listed below.
| Component | Sighten | PVWatts |
|---|---|---|
Weather data | NREL TMY Stations | NREL TMY Stations |
Shading | SAM2 shading model | User input |
Module production | DeSoto 5-parameter | User input |
Inverter efficiency | SAM CEC Efficiency | User input |
Sighten Production Calculation
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More detailed information about PVWatts is available at https://www.nrel.gov/docs/fy14osti/62641.pdf and https://pvwatts.nrel.gov/version_6.php
NREL Shading Report
| View file | ||||
|---|---|---|---|---|
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Reference papers
- Simulating SolarEdge in PVWatts
- How Misuse of Solar Resource Datasets is Reducing Solar Industry Profits
- NREL Study - Power Level Electronics
- SolarEdge Methodology (Optimizers)
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