Colombia reservoirs sit well below the level the grid wants before El Nino, raising the risk of power strain in a country that runs largely on hydro.

Colombia reservoirs sit well below the level the grid wants before El Nino, raising the risk of power strain in a country that runs largely on hydro.

Colombia's Environment Ministry confirmed on Thursday that the El Niño phenomenon arrived about three months earlier than expected and that, if projections hold, it will be one of…