AS PONTES, Spain (Reuters) – Surging European gas prices and high demand for electricity in the cold winter months have granted a reprieve to a coal plant in northwest Spain, but its workers’ future is unclear. Set to close under Spain’s efforts to cut carbon emissions, the As Pontes plant in Galicia was idled for several months last year by power company Endesa but it restarted in November as soaring gas prices made coal an attractive option. The constant back and forth leaves employees like Marcos Higinio Prieto, who has worked at the 1,400 megawatt (MW) for 13 years, in limbo. “It is not an…