You'd allocate some of it to heat and light. But the fact that solar panels are useful implies that mankind would prefer to allocate a portion of that energy di

You'd allocate some of it to heat and light. But the fact that solar panels are useful implies that mankind would prefer to allocate a portion of that energy differently. "100% of Earth's inefficiently-allocated incoming solar energy" is too subjective to earn a Wikipedia entry, but I assume it's a substantial fraction of the entire "100% of Earth's incoming solar energy".