Spray-on solar panels?!
Neato! Can't wait. Because the window count on this old house is....
35? Can that be right?
NOTE Scientific American makes an interesting point:
We are quite capable of designing buildings and lives in a sustainable way powered by the sun, and much of the basic technology goes back millennia. Yet historically it has taken a crisis of energy supply or ecological devastation to encourage widespread use of solar energy. After they had burned all there accessible forests, ancient Romans developed the heliocaminus, or "sun furnace," a south-facing room that heated their homes in winter. Similarly, once the British had eliminated their woodlands during the late Middle Ages, they also discovered the joys of solar heating. Access to the sun became a fundamental right in Britain for any building, eventually codified in the Law of Ancient Lights. Today, the impetus comes from global climate disruption and the peaking of per-capita fossil energy supplies.
Cf. Ecc 1:9.