Daily Renewables Share of Total Generation (MWh)

How to Read This Chart

This bar chart shows the daily share of total U.S. electricity generation supplied by renewable energy sources, expressed as a percentage of total generation. Each bar represents a single day. Renewable sources include wind, wind with integrated storage, solar, solar with integrated storage, hydroelectric, and geothermal generation. The horizontal axis shows individual calendar days, while the vertical axis shows the percentage of total electricity generation provided by renewables on each day. Taller bars indicate days when renewables made up a larger share of overall electricity generation.

Why This Matters

Renewables’ share of total generation highlights how much of the electricity supply is coming from clean energy on any given day, independent of total demand levels. Daily fluctuations reflect changing weather conditions, seasonal patterns, and the availability of wind and solar resources. Tracking renewables as a share of total generation is essential for understanding progress toward decarbonization goals, grid flexibility needs, and the growing role of storage in supporting variable renewable output. For policymakers, system operators, and researchers, this metric provides a clear, comparable signal of how the generation mix is evolving day by day.

Key Insights

The following highlights are derived directly from the most recent available data in this dataset using standardized calculations. Metrics reflect the daily contribution of renewable energy sources to total U.S. electricity generation and are computed from the underlying time series. Unless otherwise noted, comparisons are based on the most recent complete reporting day and the prior day. These highlights provide a concise snapshot of current renewable generation share.

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