After a decade of development, a $100 million in funding, and some twists and turns (including a name change), Silicon Valley startup Imergy Power Systems will soon start shipping the next generation of its batteries made from recycled vanadium. The 50-kilowatt battery will be available next month and can store up to 200 kilowatt hours of electricity, using vanadium recycled from mining and power combustion industries as well as environmental waste.

Image: Imergy