we're home to energy major developers and installers, including sun run, sun edison, teetion energy, basse electric, [speaker not understood]. so, to the solar companies already here in our great city, thank you for investing in our great city. ~ teague as those who are not yet located in san francisco, we welcome you. ~ with open arms. (applause) >> please consider joining your great colleagues in being part of the world's most innovative and dynamic solar clusters in the world. we continue to be a great city. we're very proud of our partnerships and our solar companies and our service providers, out of their work. we're not stopping here with these milestones. we're going to heed the call of our governor. we're going to get to goals yet to be imagined, and i thank you for being here in our world class city to kickoff this inter-solar 2013. thank you for being here in san francisco. (applause) ...

he started his own solar energy company, sun edison, and sold it for more than a few dollars. chairperson of the carbon war room and now runs his own green tech consulting firm. nuclear is a carbonless energy source. it's not considered a renewable, and there has been tremendous civil war inside the big green tent environmentalists about the future of nuclear. what is the future for nuclear? >> it's dim. because from my perspective, i've moved billions of dollars into projects, right? that's my religion, right? right and so when citibank says that we are going to short every single stock of every single company that's working on nuclear, then i'm not working on nuclear. and that's what citibank has said. >> why. is that just because the risk is so large of something catastrophic that it's just difficult to price in? >> no, it's just not cost effective today. if you look at areva, the french company, in finland, they've been trying to build a nuclear plant for the past six years. they are four years behind schedule and two and a half times over budget. and it's not done yet. >>