Pavel Khodorkovskiy's father was, at one time, the richest man in Russia. As the head of the now-bankrupted oil giant Yukos, Mikhail Khodorkovsky amassed a $15 billion fortune before being jailed by the Russian government in 2005. But his father was recently pardoned by President Vladimir Putin following international backlash, and now the younger Khodorkovskiy is building his own energy company: a cleantech startup.