When UChicago alumnus Michael Polsky first ventured into the field of renewable energy in 2003 with his company Invenergy, he thought they had missed the boat. “When we got into renewables in earnest, I thought we were too late,” said Polsky, MBA’87, believing people were well ahead of him in building clean energy projects. Today, he said we’re barely in “the third inning” of the renewables game. The founder and CEO of Invenergy, one of the largest renewables company in North America, Polsky, believes it’s not a question of if but when the United States becomes completely energy independent of fossil fuels. It’s a seemingly unexpected turn for the former power plant engineer who arrived in the U.S. from the Soviet Ukraine in the 1970s and began his career designing power plants. On this episode of Big Brains, Polsky discusses his early days in the energy field, his current project to build one of the largest wind farms in the world, and why he believes in the power of innovation.    Subscribe to Big Brains on Apple Podcasts, Stitcher, and Google Play, and learn more at news.uchicago.edu.