Frequently Asked Questions

Does EIA publish data on peak or hourly electricity generation, demand, and prices?

We publish regional, annual and projected peak electricity load (or demand) data in our Electric Power Annual report in Tables 8.6.A and 8.6.B..

Peak summer and winter demand for individual utilities are available in the Operational Data file of the EIA Form 861 database files.

EIA does not publish hourly data on electricity generation, demand, or prices. The information  in “Learn more” section below contains the type of data that EIA has published.  The Federal Energy Regulatory Commission (FERC) publishes charts with  daily hourly load/demand profiles for some Independent System Operators /Regional Transmission Organizations (ISO/RTO).

In addition, some ISO/RTO in North America publish data and charts with real-time or hourly generation data by type of fuel or energy source. Links to the websites of ISO/RTOs in North America are at: ISO/RTO Council (IRC).

Learn more:

Electricity demand patterns matter for valuing electricity supply resources
Electricity storage can smooth out moment-to-moment variations in electricity demand
Electricity demand changes in predictable patterns, includes animated graph of hourly demand profile
Case study of daily electricity demand in New England

Last updated: December 18, 2013

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