
Watt It Takes
Watt It Takes tells the stories of founders who are building our energy abundant future — their upbringings, their risks, their failures, and their breakthroughs that are transforming our world. Hosted by Powerhouse Founder and CEO and Powerhouse Ventures Managing Partner Emily Kirsch. New episodes are released every month.
Latest episodes

Feb 11, 2019 • 1h 17min
Former NRG CEO David Crane
In this episode: Emily’s conversation with David Crane, the former CEO of NRG.Today, David is a clean energy investor. Back in 2015, he was CEO of NRG, one of the biggest power producers in America. And he was fired by his board for his ambitious plan to make the company a renewable energy titan.This conversation was recorded in 2019 in front of a live audience at Powerhouse’s headquarters in Oakland, CA. Powerhouse partners with leading corporations and investors to help them lead the next century of clean technology innovation. Our fund, Powerhouse Ventures, invests in founding teams building innovative software to rapidly transform our global energy and mobility systems. You can learn more about Powerhouse at https://www.powerhouse.fund/

Dec 6, 2018 • 58min
Wunder Capital Co-Founder Bryan Birsic
In this episode: Emily’s conversation with Bryan Birsic, the co-founder and former CEO of Wunder Capital.Since its launch in 2014, Wunder has exploded onto the solar scene. It quickly became the top financier in commercial solar—which is a big deal, because commercial solar is extremely hard to finance. But Wunder cracked the code.This conversation was recorded in 2018 in front of a live audience at Powerhouse’s headquarters in Oakland, CA. Powerhouse partners with leading corporations and investors to help them lead the next century of clean technology innovation. Our fund, Powerhouse Ventures, invests in founding teams building innovative software to rapidly transform our global energy and mobility systems. You can learn more about Powerhouse at https://www.powerhouse.fund/

Sep 26, 2018 • 47min
Solar Impulse Co-Pilot Bertrand Piccard
In this episode: Emily’s conversation with Bertrand Piccard, the co-pilot of Solar Impulse, the first solar-electric plane to circumnavigate the globe.Bertrand is a Swiss aviator who spent 15 years of his life obsessed with flying a solar airplane across the world. He didn’t just see it as a novel technical feat—he wanted to prove the extraordinary capabilities of renewable energy.This conversation was recorded in 2018 at Powerhouse’s headquarters in Oakland, CA. Powerhouse partners with leading corporations and investors to help them lead the next century of clean technology innovation. Our fund, Powerhouse Ventures, invests in founding teams building innovative software to rapidly transform our global energy and mobility systems. You can learn more about Powerhouse at https://www.powerhouse.fund/

Sep 13, 2018 • 57min
Sunnova Founder John Berger
John Berger, Founder and CEO of Sunnova, discusses Sunnova's hybrid solar-battery systems, the company's backing by oil & gas investors, his experience at Enron, the significance of storage in the solar industry, the role of solar and storage energy in US territories, the early days of Sunnova, and the importance of honesty and passion in starting a clean energy company.

Aug 22, 2018 • 1h 2min
Proterra Co-Founder Ryan Popple
In this episode: Emily’s conversation with Ryan Popple, co-founder and executive director of Proterra.Proterra is one of the largest makers of electric buses and chargers in the world. Electric buses are quickly gaining market share—and Proterra has a pipeline of sales that covers 10% of the U.S. transit fleet. But it took many years to reach that stage. Proterra has faced numerous technical redesigns and lumpy consumer adoption over the years.This conversation was recorded in 2018 in front of a live audience at Powerhouse’s headquarters in Oakland, CA. Powerhouse partners with leading corporations and investors to help them lead the next century of clean technology innovation. Our fund, Powerhouse Ventures, invests in founding teams building innovative software to rapidly transform our global energy and mobility systems. You can learn more about Powerhouse at https://www.powerhouse.fund/

Jul 31, 2018 • 60min
Advanced Microgrid Solutions Founder Susan Kennedy
In this episode: Emily’s conversation with Susan Kennedy, the founder of Advanced Microgrid Solutions. AMS created a platform for managing battery storage across buildings, turning them into virtual power plants. The company raised $34 million from a “who’s who” of strategic investors—and was eventually acquired by the battery developer Fluence.This conversation was recorded in 2018 in front of a live audience at Powerhouse’s headquarters in Oakland, CA. Powerhouse partners with leading corporations and investors to help them lead the next century of clean technology innovation. Our fund, Powerhouse Ventures, invests in founding teams building innovative software to rapidly transform our global energy and mobility systems. You can learn more about Powerhouse at https://www.powerhouse.fund/

Jun 18, 2018 • 46min
Sunfolding Founder Leila Madrone
In this episode: Emily’s conversation with Leila Madrone, the founder and chief technology officer of Sunfolding. Leila is a former NASA engineer who used her expertise to create a new kind of tracking system that eliminates expensive components and reduces the installed cost of solar.This conversation was recorded in 2018 in front of a live audience at Powerhouse’s headquarters in Oakland, CA. Powerhouse partners with leading corporations and investors to help them lead the next century of clean technology innovation. Our fund, Powerhouse Ventures, invests in founding teams building innovative software to rapidly transform our global energy and mobility systems. You can learn more about Powerhouse at https://www.powerhouse.fund/

May 9, 2018 • 40min
Mosaic Co-Founder Billy Parish
In this episode: Emily’s conversation with Billy Parish, the co-founder and CEO of Mosaic. Mosaic is the top underwriter of home solar loans in America. It is creating the financial tools for homeowners to easily get solar on their roofs. Billy didn’t start in finance: he actually dropped out of Yale to pursue a career in activism. This conversation was recorded in 2018 in front of a live audience at Powerhouse’s headquarters in Oakland, CA. Powerhouse partners with leading corporations and investors to help them lead the next century of clean technology innovation. Our fund, Powerhouse Ventures, invests in founding teams building innovative software to rapidly transform our global energy and mobility systems. You can learn more about Powerhouse at https://www.powerhouse.fund/

Mar 26, 2018 • 52min
Generate Capital Co-Founder Jigar Shah
In this episode: Emily’s conversation with Jigar Shah, the co-founder of Generate Capital.Jigar is one of the most well-known entrepreneurs and investors in the world of climate tech. He helped pioneer a financial model that allowed solar to scale massively in the US. He’s been responsible for financing billions of dollars in clean energy projects. Today, he runs the loan programs office at the Department of Energy — directing the power of the government to finance zero-carbon energy.This conversation was recorded in 2018 in front of a live audience at Powerhouse’s headquarters in Oakland, CA. Powerhouse partners with leading corporations and investors to help them lead the next century of clean technology innovation. Our fund, Powerhouse Ventures, invests in founding teams building innovative software to rapidly transform our global energy and mobility systems. You can learn more about Powerhouse at https://www.powerhouse.fund/

Mar 2, 2018 • 56min
Sungage Financial Co-Founder Sara Ross
In this episode: Emily’s conversation with Sara Ross, the co-founder of Sungage Financial. Sungage is a company that makes it easy for homeowners to finance solar or energy efficiency projects. In 2009, Sara turned her Massachusetts farmhouse into a net-zero home -- but it was expensive and difficult. She became obsessed with improving the process. This conversation was recorded in 2018 in front of a live audience at Powerhouse’s headquarters in Oakland, CA. Powerhouse partners with leading corporations and investors to help them lead the next century of clean technology innovation. Our fund, Powerhouse Ventures, invests in founding teams building innovative software to rapidly transform our global energy and mobility systems. You can learn more about Powerhouse at https://www.powerhouse.fund/