China has stocked up enough gas and coal for peak electricity demand season this winter, the local power utility association has reported. An expected abundance in wind and solar generation should help secure electricity supply as well, Bloomberg noted in a report on the news. Winter electricity supply fell short of demand several years ago in parts of China, resulting in extended power and heating outages. The cause of the shortage was an insufficient stock of natural gas. Since then, Chinese power suppliers have learned their lesson and been…