There were a bunch of exciting stories in 2011 about advancements in solar energy (solar shingles for your roof!) I thought I’d share one that I keep thinking about, MIT’s announcement last July that it is possible to produce photovoltaic cells on paper or fabric, nearly as simply as printing a document.

“… paper solar cells could be made into window shades or wallpaper — and paper costs one-thousandth as much as glass for a given area, the researchers say.”

Flexible, foldable, bendable… solar. Amazing.