interview question

Please prepare a one-page (standard letter size) data story from the Energy Information Administration form EIA-860 data that can be found at this website: https://www.eia.gov/electricity/data/eia860/
The 3_1_Generator_Y2019.xlsx spreadsheet in the zip file for the latest year has useful information in the Proposed tab about capacities by resource type, including whether or not the resource includes energy storage.
The data story should highlight trends of expected changes in the supply mix over the next decade and include at least one visualization. Assume the audience is a professional in the utility sector.