Fossil fuels or rather liquid petroleum fuels have the highest density of energy per weight/ volume of all energy sources (excluding nuclear). This is a natural fact no one can ever argue about. Due to this property we will not see any major change in this field in the foreseeable future.
The document below presents the cold hard facts why renewable energy is never going to be a replacement for liquid or nuclear energy sources.
The use of renewable energy in the world and aviation.
Excerpts from the document:
A number of environmental groups in Canada and other countries have recently endorsed the “100% Clean and Renewable Wind, Water and Sunlight (WWS)” vision articulated in reports written by Mark Jacobson, Mark Delucci and others.
While a range of renewable energy technologies (e.g. geothermal, hydroelectric, tidal, and wave energy) could play a role in the global transformation, the world foreseen in the WWS vision would be dominated by wind and solar energy.
To continue reading see the pdf below: