Specific yield

Specific yield is the amount of energy generated per unit of installed capacity. It is a key performance indicator (KPI) used to compare the relative performance of an inverter or plant

Table 1. Inverter Efficiency Computation
Parameters and source	Hierarchy	Aggregation frequency	Computation logic
Inverter DC Capacity Inverter Level Generation	Inverter	Hourly	$\frac{Max. of Daily Energy (kWh)}{Inverter DC Capacity (kWp)}$
		Daily	$\frac{Max. of Daily Energy (kWh)}{Inverter DC Capacity (kWp)}$
		Monthly	$\frac{Sum(D₁ + D₂ + ... + Dₙ)(kWh)}{Inverter DC Capacity (kWp)}$
		YTD	$\frac{Sum(D₁ + D₂ + ... + Dₙ)(kWh)}{Inverter DC Capacity (kWp)}$ Where Dₙ = Daily Energy (kWh)
Plant DC Capacity Plant Level Generation	Plant	Hourly	$\frac{Max. of Daily Energy (kWh)}{Plant DC Capacity (kWp)}$ Where Dₙ = Daily Energy (kWh)
		Daily	$\frac{Max. of Daily Energy (kWh)}{Plant DC Capacity (kWp)}$
		Monthly	$\frac{Sum(D₁ + D₂ + ... + Dₙ)(kWh)}{Plant DC Capacity (kWp)}$ where Dₙ = Daily Energy (kWh)
		YTD	$\frac{Sum(D₁ + D₂ + ... + Dₙ)(kWh)}{Plant DC Capacity (kWp)}$ where Dₙ = Daily Energy (kWh)