Four pale pastel line charts track installed capacity in gigawatts for solar, wind, hydro, and nuclear energy from 2000 to 2022, all trending upward. Built with D3 v7 and SVG, the chart reads a CSV file via `d3.csv`, maps data with `d3.scaleLinear`, and renders smooth monotone curves using `d3.line` with `d3.curveMonotoneX`. A legend and gridlines complete the view.