generated: '2026-07-11' method: derived source: openapi/energy-information-administration-open-data-api-openapi.yml summary: types: - apiKey api_key_in: - query schemes: - name: apiKeyQuery type: apiKey in: query parameter: api_key description: Free API key obtained at https://www.eia.gov/opendata/register.php. Must be supplied on every request as the api_key URL parameter. sources: - openapi/energy-information-administration-open-data-api-openapi.yml