Old Man Morley built himself one of those underground houses.
They say that’s better cooling, but it’s not good for lighting.
He put in a skylight in the living room. and there were solar panels and fiber optics to carry in sunlight.
And he had some plasma televisions here and there for scenery.
The energy savings he had from building underground was more than offset by the energy costs of the televisions and lights.
And a security system to deal with the tourists, of course.
Trick or treaters would bang on the skylight, demanding Snickers.
Morley turned out the lights.