Billy Parish dropped out of college to pursue a career in climate activism. Today, he's the CEO of America's biggest rooftop solar loan company, Mosaic.In this edition of Watt It Takes, Powerhouse CEO Emily Kirsch interviews Parish about his transition from activist to executive. They'll talk about the many iterations of Mosaic, difficulties in raising money from VCs, and Parish's philosophy on building a successful team.Watt It Takes is a live interview series produced by Powerhouse in partnership with GTM. The conversation was recorded live in Oakland, California.This podcast is brought to you by Sense. Sense installs in your home's electrical panel and provides insight into your energy use and home activity through iOS, Android and web apps. Find out more.Listen to our other episodes of Watt It Takes:Nancy Pfund’s Pro Tips for Getting Started in CleantechSunPower Founder Dick Swanson’s Guide to Launching a Cleantech StartupLessons From the Fall of SungevityDan Shugar, the K​ing Midas of SolarA History of Greentech Media With Scott ClavennaSungage's Sara Ross on Starting a Solar Loan CompanyJigar Shah on the Origin Story of SunEdisonLike our shows? Make sure to give The Interchange, The Energy Gang and Political Climate a rating and review on Apple podcasts. And make sure to subscribe to both shows on Apple podcasts, Google Play, Stitcher, or anywhere you get your podcasts.