 And so overall, this is why it is so important that we have a mix of different technologies in the system. To keep the lights on, says Lott, without having to burn more fossil fuels. I'm Daniel Ackerman for Marketplace. Should you find yourself up early in the morning wondering what the business and economic news of the day is, might I recommend the Marketplace Morning Report. David Brancaccio and the gang get out of bed real early to let you know what's going on.