The U.S. wants to become a net-zero emissions economy by 2050. That will mean a lot of new generation from renewable energy. It also means more transmission networks are needed to bring it onto the grid. But there's a debate over how that new transmission should be built — between a competitive or monopoly approach. Today, we look at why competition is so divisive and why each side thinks they should build the next generation of transmission infrastructure. **Related Listening: **Texas' new power grid problem (Apple) / Spotify)) Green energy gridlock (Apple) / Spotify)) *For sponsor-free episodes of The Indicator from Planet Money, subscribe to Planet Money+ via Apple Podcasts or at plus.npr.org). Music by Drop Electric). Find us: TikTok), Instagram), Facebook), Newsletter). *Learn more about sponsor message choices: podcastchoices.com/adchoices)NPR Privacy Policy)