This interactive D3 bar chart visualizes the percentage change in natural gas consumption by the electric power sector across eleven U.S. states, with bars diverging from a central zero axis. Each bar’s fill color reflects the magnitude and direction of change using a sequential color scale based on the `interpolateRdBu` interpolator. The chart employs `d3.scaleBand` for the categorical y-axis, `d3.scaleLinear` for both the horizontal value scale and bar lengths, and `d3.axisBottom`, `d3.axisLeft`, and `d3.axisRight` for axis ticks. A `d3.legendColor` legend with nine cells maps the color scale to the numeric range. Data is loaded from a CSV file via `d3.csv`.