Donut Energy Composition Example (U.S. Electricity)

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Concept reference from Fizz Studio demo: ParaCharts demo donut chart

Scenario

Communicate part-to-whole composition of the top U.S. electricity generation sources.

Data Source And Refresh

• Source: EIA data browser CSV table T07.02A.
• Source URL: https://www.eia.gov/totalenergy/data/browser/csv.php?tbl=T07.02A
• Refresh cadence: Monthly via GitHub Actions cache update workflow.
• Data continuity: This page will continue updating while EIA publishes compatible data.

When To Use

Use a donut chart for part-to-whole communication where proportional share is the core message.

Manifest

<para-chart manifest="data/manifests/us-electricity-top5.json"></para-chart>

Full manifest (JSON):

• https://raw.githubusercontent.com/mgifford/ParaCharts/main/docs/data/manifests/us-electricity-top5.json

Interpretation Prompts

1. Which generation source has the largest share in the latest annual data?
2. How concentrated is the mix across the top two sources?
3. Which sources are the smallest contributors within the top five?