santiago chilean presidential candidate sebastian pi era lead poll november elections pledge thursday move south american country toward fully renewable electricity grid 2040. conservative pi era previously serve chile president 2010 2014 say elect would seek build heavy investments country make wind solar energy goal 2040 chile 100 percent clean renewable electricity grid 100 percent electric public transit system pi era say campaign rally chile obvious target green energy firm import oil gas use desert climate long coastline make solar wind power viable prospect especially price renewables plunge pi era victory would welcome copper-producing country business community blame current center-left president michelle bachelet stoke market uncertainty one latin america free-market economies pi era unlikely win first round december runoff center-left candidate alejandro guillier hard-left beatriz sanchez would likely tight guillier sanchez also speak favor boost renewable energy though neither give specific time-frame move toward all-clean grid conservative chile presidential candidate call all-renewable grid