Lenovo has a history of showing off weird and interesting new product ideas at trade shows. Remember the laptop with the rollable display from a few years ago? This year at MWC it's doing the same thing, with a host of unique, fun, and downright silly ideas, some of which could inform designs and decisions for future products.

It’s also just a general triumph of eco-friendly engineering. The solar panel on the rear of the display (which, incidentally, doesn’t appear to make the laptop noticeably thicker than Lenovo’s other Yoga ultrabooks) offers an energy conversion rate of more than 24%, which is among the very best you’ll see in any type of photovoltaic solar cells.

The Yoga Solar PC features a solar panel built into the laptop’s lid.