This visualization presents monthly energy consumption data as multiple small SVG charts, one per site, with each chart combining bar and line representations. The code uses D3 v5 with `d3.nest()` to group the data from MonthData.csv by site, `d3.scaleBand` and `d3.scaleLinear` for axes, and `d3.axisBottom` and `d3.axisLeft` for ticks. Each chart displays site-specific bars and a colored line path, with hover effects on rectangles and a formatted time axis.