{"instance":[{"timestamp":"2026-05-20 21:13:00","AECI":"-196","LGEE":"48","MHEB":"-1263","MISO":"-3718","ONT":"-992","PJM":"-1783","SOCO":"39","SPA":"-13","SWPP":"-249","TVA":"500"}],"RefId":"20-May-2026 - Interval 21:13 EST","MktDay":null}