ISO market feeds optimization

An EUA carbon price API returns EUA_CO2 as JSON in EUR. Energy-API GET /api/v1/latest uses api_key. Do not pass base=USD. Starter $19.99/mo,...

A Spanish day-ahead electricity API returns OMIE_ES_DA in EUR/MWh as JSON. Energy-API GET /api/v1/latest. Official sample dated 2026-06-11 p...