Mr. Hemphill for much of his career was employed at AES, a global electric power generating and distribution company, where he served as Executive Vice President and Chief of Staff to the CEO. Hemphill was one of the three executives who started the company in 1981, growing it from a million dollar six person start up. AES owns and operates 32,000 MW of power plants in 18 countries around the globe, is publicly listed on the NYSE, and had approximately $39 billion in assets and $17 billion of revenues in 2014.

Recently, Hemphill was the founder and CEO of AES Solar Power Ltd from its inception until the end of 2013. The company, formed in March 2008, was a joint venture of the AES Corporation and Riverstone LLC, an energy focused private equity fund. AES Solar grew from a small start-up to become a leading developer, owner and operator of utility-scale photovoltaic solar plants providing power to the grid. Under his leadership, the company designed, permitted, financed and constructed fifty-one solar plants (526 MW) in seven countries: Spain, France, Italy, Bulgaria, Greece, India and the US, for $2.5 billion in assets.

Since leaving AES Solar, Hemphill has published two books about his energy, international and business experience: Dust Tea, Dingoes and Dragons, and Stories from the Middle Seat. Both are available on Amazon. He is a columnist for Huffington Post, and is advising several small renewable companies.

Earlier in his career he was a senior policy official at the Department of Energy and Deputy Manager of Power at the Tennessee Valley Authority.

Mr. Hemphill graduated Magna Cum Laude from Yale University and earned an MA from UCLA and an MBA from George Washington University. He served as an airborne infantry officer in the US Army in Vietnam, and in the Special Forces.