Back on July 27th, I wrote about how surprised I was to find shares of Power-One (PWER), a provider of renewable energy and energy-efficient power conversion and power management solutions such as photovoltaic inverters used in solar power applications, trade down after reporting blow-out second quarter results.

FORBES: Explain This One, Part 2

Making the conversion with integrated circuits is much more efficient, with as little as 20% of the power being lost.

ECONOMIST: How a boring gadget saved $2 billion-worth of electricity