{"data":[{"date":"2026-06-13","flex_eur_mwh":153.95},{"date":"2026-06-14","flex_eur_mwh":143.46},{"date":"2026-06-15","flex_eur_mwh":157.26},{"date":"2026-06-16","flex_eur_mwh":129.62},{"date":"2026-06-17","flex_eur_mwh":132.34},{"date":"2026-06-18","flex_eur_mwh":116.03},{"date":"2026-06-19","flex_eur_mwh":137.04},{"date":"2026-06-20","flex_eur_mwh":126.96},{"date":"2026-06-21","flex_eur_mwh":135.74},{"date":"2026-06-22","flex_eur_mwh":150.19},{"date":"2026-06-23","flex_eur_mwh":193.76},{"date":"2026-06-24","flex_eur_mwh":221.8},{"date":"2026-06-25","flex_eur_mwh":150.29},{"date":"2026-06-26","flex_eur_mwh":184.61},{"date":"2026-06-27","flex_eur_mwh":143.7},{"date":"2026-06-28","flex_eur_mwh":131.79},{"date":"2026-06-29","flex_eur_mwh":120.83},{"date":"2026-06-30","flex_eur_mwh":128.03},{"date":"2026-07-01","flex_eur_mwh":127.58},{"date":"2026-07-02","flex_eur_mwh":128.77},{"date":"2026-07-03","flex_eur_mwh":130.83},{"date":"2026-07-04","flex_eur_mwh":129.97},{"date":"2026-07-05","flex_eur_mwh":130.46},{"date":"2026-07-06","flex_eur_mwh":150.15},{"date":"2026-07-07","flex_eur_mwh":133.36},{"date":"2026-07-08","flex_eur_mwh":158.86},{"date":"2026-07-09","flex_eur_mwh":150.45},{"date":"2026-07-10","flex_eur_mwh":128.49},{"date":"2026-07-11","flex_eur_mwh":155.73},{"date":"2026-07-12","flex_eur_mwh":146.41}],"meta":{"zone":"FR","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."}}