claim: the department of energy’s "billion ton study" has shown that wind and solar energy combined "could at best provide only 5 percent of our total energy needs."
author: herman cain
evidence_1: dec 20, 2017 ... renewable energy—wind, solar, geothermal, hydroelectric, and biomass— provides substantial benefits for our climate, our health, and our economy. ...  reduce the electricity sector's emissions by approximately 81 percent [5]. ...  change: studies have repeatedly shown that renewable energy can provide a ...
evidence_2: the department of energy's "billion ton study" has shown that wind and solar  energy combined "could at best provide only 5 percent of our total energy needs." .
evidence_3: sep 6, 2011 ... solar energy, wind power and moving water are all traditional ... of fossil fuels  that we have mostly depended on for our energy needs, ... provide only about 7  percent of the world's energy needs (source: .... solar power could provide  energy for more than one billion people ... december 5, 2011 at 9:56 am.
evidence_4: apr 23, 2015 ... most experts agree that transitioning to a clean energy economy will be difficult.  ... a more flexible electric system, is more than adequate to supply 80% of total ...  “our civilization needs to embrace renewable energy on a scale and at ... as coal  production increased in the same period to nearly a billion tons.
evidence_5: disruptive technology, but forecasts that it will provide only 16 percent of world  energy by ... optimistic study by the us department of energy's. (doe) national ...