{"data":[{"date":"2026-06-13","flex_eur_mwh":149.38},{"date":"2026-06-14","flex_eur_mwh":133.79},{"date":"2026-06-15","flex_eur_mwh":157.33},{"date":"2026-06-16","flex_eur_mwh":137.31},{"date":"2026-06-17","flex_eur_mwh":109.5},{"date":"2026-06-18","flex_eur_mwh":390.52},{"date":"2026-06-19","flex_eur_mwh":169.09},{"date":"2026-06-20","flex_eur_mwh":167.42},{"date":"2026-06-21","flex_eur_mwh":148.7},{"date":"2026-06-22","flex_eur_mwh":233.41},{"date":"2026-06-23","flex_eur_mwh":453.58},{"date":"2026-06-24","flex_eur_mwh":573.15},{"date":"2026-06-25","flex_eur_mwh":221.74},{"date":"2026-06-26","flex_eur_mwh":274.89},{"date":"2026-06-27","flex_eur_mwh":182.55},{"date":"2026-06-28","flex_eur_mwh":153.21},{"date":"2026-06-29","flex_eur_mwh":140.28},{"date":"2026-06-30","flex_eur_mwh":346.48},{"date":"2026-07-01","flex_eur_mwh":112.5},{"date":"2026-07-02","flex_eur_mwh":152.5},{"date":"2026-07-03","flex_eur_mwh":133.36},{"date":"2026-07-04","flex_eur_mwh":135.56},{"date":"2026-07-05","flex_eur_mwh":139.57},{"date":"2026-07-06","flex_eur_mwh":122.91},{"date":"2026-07-07","flex_eur_mwh":126.47},{"date":"2026-07-08","flex_eur_mwh":122.84},{"date":"2026-07-09","flex_eur_mwh":173.64},{"date":"2026-07-10","flex_eur_mwh":143.64},{"date":"2026-07-11","flex_eur_mwh":156.37},{"date":"2026-07-12","flex_eur_mwh":148.49}],"meta":{"zone":"CZ","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."}}