Free Online Normalized Yield Ratio Calculator

The Normalized Yield Ratio is a metric to track the performance of a single solar power plant over time by examining its energy production relative to the available solar resource. It helps understand if the plant's output is consistent with the sunlight it receives across different seasons and years.

  1. Enter Energy Generated (kWh): Provide the total actual energy output during the selected period.
  2. Enter Plant Capacity (kW): This is the rated capacity of your solar plant.
  3. Enter Insolation (kWh/m²): The measured plane-of-array insolation (sunlight received) in kWh/m² during the same time period.
  4. Note: Irradiance @ STC is a Standard Value:This is typically 1 kW/m² and this calculator takes it by default.
  5. Click Submit: The calculated Normalized Yield Ratio will be displayed as a percentage. Track this ratio over time for the same plant to identify trends in its performance relative to the solar resource.

Use this metric to monitor the consistency of your plant's energy generation relative to the available sunlight across different periods. A significant decline over time might indicate a need for maintenance or performance optimization. Remember that this ratio does not account for system-specific efficiencies.