The author relies exclusively on solar during his excursion for recharge. Despite a rainstorm that put him behind the power curve (literally), he’s only researching expanding the solar supply, not supplementing it with wind generators. Foolish.

Researchers from the University of Oxford’s chemistry department found that like-charged particles submerged in solutions were able to attract each other from long distances, depending on the solvent used and the sign of the charge.
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The researchers tracked negatively charged silica microparticles that were suspended in a solution and discovered that these particles did indeed attract each other, forming hexagonally arranged clusters when they did.
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The scientists believe the phenomenon is caused by an attractive force only present in water that outweighs the usual electrostatic repulsion, allowing these clusters to form.
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“We show that in aqueous solution, negatively charged particles can attract at long range while positively charged particles repel. In solvents that exhibit an inversion of the net molecular dipole at an interface, such as alcohols, we find that the converse can be true: positively charged particles may attract whereas negatives repel.”

Left unsaid is why the force is only present in water. Science is never settled.

Related: Sun bursts with largest solar flare since 2017.

But go ahead, get rid of your internal combustion car in favor of one powered by batteries strip-mined in China and generators fueled with trainloads of coal and diesel.