WUWT
The two fundamental problems that renewables face are that they take
up too much space and produce too little energy. Consider Solar Impulse,
the solar-powered airplane now flying around the world. Despite its
huge wingspan (similar to a 747), slow speed and frequent stops, the
only cargo that it can carry is the pilots themselves. That is a good
metaphor for the limitations of renewables.
To run the U.S. economy entirely on wind would require a wind farm
the size of Texas, California and New Mexico combined—backed up by gas
on windless days. To power it on wood would require a forest covering
two-thirds of the U.S., heavily and continually harvested."
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