Not Clearly Pro or Con to the question "Can Alternative Energy Effectively Replace Fossil Fuels?"
"Take coal. If you factor in the impact it has on miners, public health, the environment and the climate, its 'life cycle' cost in the United States alone, according to a 2011 Harvard Medical School study, is at least $345 billion a year.
Fortunately, wind and solar are now cheaper than building new coal and nuclear plants and are coming on line at a record pace. Last year, renewables made up roughly half of all new global electricity capacity and provided 10.3 percent of the world’s electricity. Add hydro and nuclear power, and carbon-free energy sources amounted to 33 percent.
The fact is, we have the technology today to dramatically curb carbon emissions. What we need is political will, which all too often is undermined by undue fossil fuel industry influence."
"Why We Need to Stop Burning Fossil Fuels," about.bgov.com, May 18, 2016