Photovoltaic Array Annual Power Generation Calculator

Formula

The formula to calculate the annual power generation of a photovoltaic array is:

\[ P = 365 \cdot H \cdot A \cdot \eta \cdot K \]

where:

\(P\) is the annual power generation (kWh)
\(H\) is the average daily radiation (kWh/㎡)
\(A\) is the array area (㎡)
\(\eta\) is the conversion efficiency (%)
\(K\) is the correction factor, calculated as \(K1 \cdot K2 \cdot K3 \cdot K4 \cdot K5\)

Let's assume the following values:

Using the formula:

\[ K = 0.8 \cdot 0.82 \cdot 0.95 \cdot 0.85 \cdot 0.9 \approx 0.48 \]

\[ P = 365 \cdot 2.5 \cdot 100 \cdot 0.15 \cdot 0.48 \approx 6525 \text{ kWh} \]

The Annual Power Generation is approximately 6525 kWh.

Average Daily Radiation (kWh/㎡)	Array Area (㎡)	Conversion Efficiency (%)	Inverter Efficiency (K4) (%)	Annual Power Generation (kWh)
3	90	15	80	6,632.97
3	90	15	85	7,047.53
3	90	15	90	7,462.09
3	95	15	80	7,001.47
3	95	15	85	7,439.06
3	95	15	90	7,876.65
3	100	15	80	7,369.96
3	100	15	85	7,830.59
3	100	15	90	8,291.21
3	105	15	80	7,738.46
3	105	15	85	8,222.12
3	105	15	90	8,705.77
3	110	15	80	8,106.96
3	110	15	85	8,613.64
3	110	15	90	9,120.33