{"data":[{"date":"2026-06-13","flex_eur_mwh":132.03},{"date":"2026-06-14","flex_eur_mwh":136.5},{"date":"2026-06-15","flex_eur_mwh":158.63},{"date":"2026-06-16","flex_eur_mwh":143.35},{"date":"2026-06-17","flex_eur_mwh":109.45},{"date":"2026-06-18","flex_eur_mwh":347.64},{"date":"2026-06-19","flex_eur_mwh":203.95},{"date":"2026-06-20","flex_eur_mwh":192.92},{"date":"2026-06-21","flex_eur_mwh":156.58},{"date":"2026-06-22","flex_eur_mwh":233.97},{"date":"2026-06-23","flex_eur_mwh":460.17},{"date":"2026-06-24","flex_eur_mwh":606.05},{"date":"2026-06-25","flex_eur_mwh":310.9},{"date":"2026-06-26","flex_eur_mwh":344.37},{"date":"2026-06-27","flex_eur_mwh":255.02},{"date":"2026-06-28","flex_eur_mwh":176.28},{"date":"2026-06-29","flex_eur_mwh":280.65},{"date":"2026-06-30","flex_eur_mwh":387.9},{"date":"2026-07-01","flex_eur_mwh":181.05},{"date":"2026-07-02","flex_eur_mwh":286.6},{"date":"2026-07-03","flex_eur_mwh":120.79},{"date":"2026-07-04","flex_eur_mwh":144.77},{"date":"2026-07-05","flex_eur_mwh":166.93},{"date":"2026-07-06","flex_eur_mwh":138.77},{"date":"2026-07-07","flex_eur_mwh":47.59},{"date":"2026-07-08","flex_eur_mwh":168.16},{"date":"2026-07-09","flex_eur_mwh":173.41},{"date":"2026-07-10","flex_eur_mwh":135.25},{"date":"2026-07-11","flex_eur_mwh":156.88},{"date":"2026-07-12","flex_eur_mwh":130.71}],"meta":{"zone":"PL","index":"FLEX-2H v1.0","unit":"EUR per MWh of shifted energy","method":"Max of avg(discharge 2h window) \u2212 avg(charge 2h window) over the published day-ahead 15-minute curve, charge completing before discharge. Methodology is versioned and immutable; see voltcast.com\/indices.","license":"Free to view and quote with attribution (\"Voltcast Flex Index\"). Commercial referencing (contracts, settlement, indexation) requires a license: sales@voltcast.com."}}