Billy Parish is Founder and Executive Chairman of Mosaic, one of the largest clean energy finance companies in the U.S. Mosaic has funded over $14 billion in loans to help more than 400,000 households adopt solar, batteries, heat pumps and other sustainable home improvements. 

In 2002, Billy founded a student climate organization called the Energy Action Coalition and grew it to over 300,000 members. He was lead architect of a proposal to create a Clean Energy Corps, which was incorporated into the American Recovery and Reinvestment Act in 2009.

He was elected as a Fellow by Ashoka, the global association of the world's leading social entrepreneurs, and his book Making Good: Finding Meaning, Money & Community in a Changing World is an Amazon bestseller. He lives in Washington, DC with his wife and two daughters.