sample data: { "generation biomass": 447, "generation fossil brown coal/lignite": 329, "generation fossil gas": 4844, "generation fossil hard coal": 4821, "generation fossil oil": 162, "generation hydro pumped storage consumption": 863, "generation hydro run-of-river and poundage": 1051, "generation hydro water reservoir": 1899, "generation nuclear": 7096, "generation other": 43, "generation other renewable": 73, "generation solar": 49, "generation waste": 196, "generation wind onshore": 6378, "forecast solar day ahead": 17, "forecast wind onshore day ahead": 6436, "total load forecast": 26118, "total load actual": 25385, "price day ahead": 50.1 }