Alliant Energy said Friday it is likely to file in the second quarter with regulators its rate plan covering the first tranche of a 1,000 MW solar buildout that will continue through 2023 in Wisconsin. The Madison, Wisconsin-based utility holding company said that it is also “watching closely” legislative initiatives that suggest that neighboring Iowa is “early in the process” of building out solar generation in a state where Alliant subsidiary Interstate Power and Light already has a significant wind generation fleet. “We’re putting renewable energy to work for our customers by advancing our renewable energy investments and preparing the energy grid for more distributed energy resources.” John Larsen, Alliant Energy Chairman, President and CEO, told analysts. Alliant serves 965,514 electricity customers and meets a summer peak demand of 5,459 MW. Alliant’s regulated utilities currently […]