Pedestal fan/refrigerator simulation
As per the details in your comment, Matlab is the best software to use.

To not start from zero, you can see the following in built example in Matlab-Simulink.



It is a small system contains PV, Battery and some loads. you can change the parameters as per your system.

To open the model type in Matlab workspace "power_microgrid" you will get this model.This link from Matlab gives a brief explanation of the system.

Now regarding the refrigerator and the fan, as you do not need to capture the dynamic behavior of the refrigerator and fan, you can plug their respective nominal power and voltage in the load blocks. However, If you want to capture the dynamic behavior, you can replace the load blocks in this example by asynchronous machine with constant mechanical load which represents the fan/compressor of the fan/refrigerator.