National Clean Energy Summit 8.0: Powering Progress in Las Vegas
In This Photo: Geisha Williams
Geisha Williams, President of Electric Operations at Pacific Gas & Electric Company speaks during a panel discussion at the National Clean Energy Summit 8.0 at the Mandalay Bay Convention Center on August 24, 2015 in Las Vegas, Nevada.
(Aug. 23, 2015 - Source: Isaac Brekken/Getty Images North America) more pics from this album »