PASAR API

🇪🇸 REE ESIOS ~ electricity market prices & indicators

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System-operator API for market prices and thousands of energy indicators; free personal token issued by email on request.

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# REE ESIOS ~ electricity market prices & indicators needs an access token ~ get yours at:
# https://api.esios.ree.es/
curl 'https://api.esios.ree.es' \
  -H 'Authorization: Bearer YOUR_TOKEN'

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I'm integrating a Spain API into my app.

API: REE ESIOS ~ electricity market prices & indicators
Provider: Red Eléctrica de España (ESIOS)
Auth: requires an access token (sign up: https://api.esios.ree.es/)
Pricing: free
Base URL: https://api.esios.ree.es
Important note: System-operator API for market prices and thousands of energy indicators; free personal token issued by email on request.

Source: Red Eléctrica de España (ESIOS) (https://api.esios.ree.es/)
Source type: Official public feed
Endpoint type: Direct public JSON endpoint
Integration difficulty: Needs token
Last checked: 2026-07-05
Production caveat: Keep credentials server-side and confirm current limits, pricing, and webhook/error behaviour in the provider docs.

Help me set up the correct onboarding/authentication path and make the first valid request ~ explain exactly where credentials go and what must happen before production.

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