EIA Open Data API
The U.S. Energy Information Administration publishes time-series data covering electricity, natural gas, petroleum, coal, nuclear outages, renewables, and international energy through APIv2. Datasets are organized by major energy category and accessed with an api.data.gov key.
EIA Open Data API is one of 9 APIs that Energy and Utilities publishes on the APIs.io network.
Tagged areas include Open Data, Federal, Electricity, Natural Gas, and Petroleum. The published artifact set on APIs.io includes API documentation and an API reference.