Exactly a year after the COP21 climate conference in Paris, Netherlands Railways (NS) has announced that all electric trains on the Dutch network will operate exclusively using power from renewable sources with effect from January 1 2017, a year earlier than originally envisaged. The move affects both passenger and freight operators as the entire Dutch railway sector purchases traction energy collectively. Based on a 10 year contract, the sector is purchasing 1.4 terawatts per year,…