I am learning ArcGIS and would like to know the step by step process on how to map electricity demand of a country. I would also like to know what datasets are needed to complete this task.
For a better representation, you can collect electricity data (i.e place by no. of the user) from local electricity office and put it on your work. I hope these will help you in your project.
If you are a learner, then just collect information regarding electricity (ie. population density, place by no. of users, lu/lc classification, etc.) and perform overlay analysis. hopefully, you will have a satisfactory result. In additional, you can just skip field visit (optional you can or not).