Sighten‘s solar energy system production model incorporates key aspects of the industry’s most sophisticated models while maintaining simplicity of user inputs.
Highlights
Simple Inputs: Simple and non-assumptive user inputs required - module and inverter quantities/models, pitch, azimuth, and shading
Hourly production profile: Hourly production calculations with granular weather data
Equipment-specific calculations: Module and inverter-level electrical behavior modeled based on the equipment used
Sighten vs PVWatts
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
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production calculation
Production output: Production is simulated for each array on an hourly basis (8760 hour profile)
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For more information on the models and methodologies used for Sighten's calculations, please check out the PDF links below.
| Info |
|---|
All SolarEdge string inverters are considered to be equipped with optimizers in Sighten. |
Reference
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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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