Electricity Cost Optimisation equations

How can i write basic equations for electricity cost optimisation in microgrid ?Which are the factors to consider while creating such equations?Is there any basic conditions /reference journals for conditions to be met?how can i connect such equations with matlab script and model considered ?

https://www.mathworks.com/videos/optimization-in-energy-management-systems-1561902499222.html

in the above mentioned video, how can i know the details of each file uploaded as inputs ?From where can i select those input cost files and how do i chose data for optimisation?