A grouped and stacked horizontal bar chart displays the percentage shares of renewable, fossil fuel, and nuclear electricity generation for ten countries. The visualization uses D3.js v7 with SVG rendering, loading data directly from a local CSV. It demonstrates `d3.stack()` for stacking the energy source series, `d3.scaleOrdinal()` for categorical colors, and `d3.axisBottom()` and `d3.axisLeft()` for axes. Interactive tooltips provide country-specific values when hovering over bars.