Clean-energy sources surpass coal's power supply for first time in the US

The onslaught of clean power is coming largely at the expense of coal, which only a decade ago supplied more electricity in the US than anything else

For the clearest sign yet that renewable energy has gone mainstream, consider this: Clean-energy resources supplied more of America’s electricity than coal for the first time ever in April.
 
Hydroelectric dams, solar panels and wind turbines generated almost 68.5 million megawatt-hours of power in April, eclipsing the 60 million that coal produced that month, Energy Information Administration data released late Tuesday show. That’s the most clean power the US has ever made -- and the least coal it has burned for power in years.
 
The shift is a testament to the rapid development of solar and wind farms