The formula to calculate the Inverter Energy (IE) is:
\[ IE = PI \times T \times 60 \]
Where:
Let's say the inverter power consumption (PI) is 500 watts and the total time of usage (T) is 120 minutes. Using the formula:
\[ IE = 500 \times 120 \times 60 \]
We get:
\[ IE = 3,600,000 \text{ Joules} \]
So, the inverter energy is 3,600,000 Joules.