We’re running a contest! Through April 19, each review on Apple podcasts or share on social media (using #WattItTakes) will enter you to win a limited-edition Watt It Takes crewneck — and enable more people to hear inspiring stories about entrepreneurs making our climate-positive future a reality.To reduce greenhouse gas emissions quickly, we need to electrify large swaths of the economy. But that requires a steady supply of renewable power. And that's where things get tricky.Historically, we’ve turned to natural gas or batteries for backup power when resources like wind and solar can’t meet demand. But today’s batteries aren’t always cost-effective, especially at an industrial scale. Plus, they only provide energy for short periods of time.The other option: Generators.Generators can provide power whenever it’s needed and ensure that essential sites like grocery stores and hospitals always have access to reliable electricity. But today’s generators burn lots of oil and gas — including some of the dirtiest types of fuels available.Our guest, CEO and co-founder of Mainspring Energy Shannon Miller, has designed a generator for the 21st century – making it cleaner, more efficient and capable of being powered by nearly any fuel. Emily sat down with Shannon to learn what it takes to redesign a generator from scratch. They also talked about how Mainspring convinced its first investors to take a bet on an unproven technology, how Mainspring landed its first customers, and how they’re making the grid more reliable and resilient.Powerhouse is an innovation firm that works with leading global corporations to help them find, partner with, invest in, and acquire the most innovative startups in clean energy, mobility, and climate. Powerhouse Ventures backs seed-stage startups building innovative software to rapidly decarbonize our global energy and mobility systems. You can learn more at powerhouse.fund, and you can subscribe to our newsletter at https://www.powerhouse.fund/subscribe.To hear more stories of founders building our carbon-free future, hit the “subscribe” button and leave us a review on Apple podcasts.Watt It Takes is brought to you by Baker Botts. Founders and leaders of clean energy companies around the world turn to Baker Botts for legal advice at every stage of their journey, from incorporation to exit. To scale your clean energy business faster, visit bakerbotts.com.