#ronaldo net worth 2022 #grand inga dam #richest footballer #hydroelectric dam #Africa #sustainable energy #what is grand inga #worlds largest dam #Grand Inga Dam project #hydroelectric dams #what is world's largest dam #grand inga #world largest hydroelectric project in Africa #energy supply company #how to get bids for construction #renewable energy #messi net worth 2022 #richest athletes #hydropower #Grand Inga Dam #energy supply #the grand inga dam project #the grand inga project #messi net worth #dr congo #energy #grand inga project #inga dam #democratic republic of congo