Former Michigan governor Jennifer Granholm, President Joe Biden's pick for energy secretary, could pocket up to $5 million for stepping down from a prominent position with a Silicon Valley energy company. Granholm will relinquish her spot on the board of Proterra, Inc., an electric-vehicles manufacturer, if she is confirmed by Congress. She will also sell off all stocks in the company, resulting in a windfall. Disclosure forms show that Granholm's stock in Proterra is valued between $1 and $5 million. She will also divest from other energy companies, including First Solar, a solar-panel company, and Duke Energy, an electric company....