the.com/solar energy
the sun does nuclear fusion 93 million miles away so you don't have to.
means energy harvested from sunlight, usually converted into electricity or heat via panels that exploit the photovoltaic effect.
from humans have used passive solar heating since ancient Rome's south-facing bathhouses, but the modern solar cell traces to 1954 Bell Labs, where scientists accidentally discovered silicon's light-to-electricity trick while testing rectifiers.
earth's supplymore sunlight hits earth hourly than humanity uses yearly
efficiency ceilingsingle-junction silicon cells cap near 33 percent theoretically
first usepowered satellites decades before rooftops
payback periodmost panels repay their carbon cost within two years