Greece’s Metlen Energy & Metals (<a href="https://www.athexgroup.gr/el/stock-snapshot/-/select-stock/336" target="_blank">ATH:MYTIL</a>) has signed a 15-year power purchase agreement (PPA) with Chilean energy trader Copec EMOAC for the supply of 450 GWh of electricity per year from four solar plants in Chile, the companies said on Thursday.