Sharp's illuminating solar skylight
Sharp's Lumiwall is one of those products that mildly screws up one's attempts to write a headline about it, because it does three things at once: it's a transparent solar panel that also includes a high-brightness LCD light. The idea is, obviously, to stick one (or as many as you can bear, structurally and financially) into your roof for use as a skylight during the day, then switch it on to light your home at night. The Lumiwall (OK, you don't have to put it in the ceiling) goes on sale in Japan on November 1 and is "open priced", which in this context means "however far you open your wallet you don't have enough cash to buy one".