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Sighten‘s 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 modeled based on the equipment used

Overview


User inputs 

Irradiation 

Module output 

Array output 

  • Location
  • Equipment
  • Pitch, azimuth, solar access
  • Weather data
  • Sun position
  • Solar access 
  • Absorption Cell temps
  • Module current- voltage curves 
  • Aggregate modules
  • Inverter clipping & efficiency 

Sighten vs PVWatts 

Component

Sighten 

PVWatts 

Weather data 

NREL TMY Stations 

NREL TMY Stations 

Shading 

SAM2 shading model 

User input 

Module production 

DeSoto 5-parameter 

User derate input 

Inverter clipping 

Sandia MPPT Tracking 

None 

Inverter efficiency 

SAM CEC Efficiency 

User input

Sighten Production Calculation

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