In keeping with the promise Tueday to return to more tech/transport/planning content for your consideration:
Researchers demonstrate 'avalanche effect' in solar cells
Coventional solar cells, one photon (light particle) can release precisely one electron. The creation of these free electrons ensures that the solar cell works and can provide power. The more electrons released, the higher the output of the solar cell.
In some semiconducting nanocrystals, however, one photon can release two or three electrons, hence the term avalanche effect. This could theoretically lead to a maximum output of 44 percent in a solar cell comprising the correct semiconducting nanocrystals. Moreover, these solar cells can be manufactured relatively cheaply.
Right now the best commercial panels are 16-18%. 44% could reduce the "roofprint" by 2/3rds and likewise make many many more locations available. The Dawg House would need ~1200sf to meet its electrical needs. We have that but @44% efficiencies we'd need only 300sf because location and orientation could be optimized for the smaller package. If the price was right add another 100sf and recharge a plug in hybrid as well.
And what better time than when the oil bubble closes above $139.