This example displays monthly energy consumption in kilowatt-hours across multiple sites, with each site color-coded and rendered as a separate small bar chart arranged in a grid. The visualization uses D3 v5 to load data from a CSV file, parse dates with `d3.timeParse`, and create individual SVG charts for each site. Hovering over a bar highlights it in orange, and a tooltip provides detailed values. The charts share common axes and scales, computed using `d3.scaleBand` and `d3.scaleLinear`, to facilitate comparison across sites and time periods.