Xtreme, which has attracted backing from venture capital firms and corporate investors like Dow Chemical, Fluor and BP Alternative Energy, is developing large-scale digital power systems for renewable energy and micro-grid applications.

FORBES: Duke Energy Bets Big on Better Batteries

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