From 2007 through to the present day, wind and solar energy have been the fastest growing forms of power generation in the U.S. In fact, so fast has that growth been that in September of last year, and for the first time ever, the annual electrical production of wind and solar passed that of hydro-electric power stations.
Since that time hydro-electric power output has continued to recover from the nation-wide droughts of 2015 and 2016 which so reduced their electricity generation output. Nonetheless, and as the chart above shows, output of wind and solar has been increasing even faster.
As a result, in the 12 months to the end of May this year, wind and solar generated 7.5% of US electricity compared with 7.0% by hydro.
Given continued rapid growth of both wind and solar, in combination with the fact that no significant new hydro projects are planned, it seems likely that hydro has forever lost its crown!