I apologize for blowing up the forums recently, but I've been working on the optimization exercise in the LEAP training materials, and have come across a problem I can't get to the bottom of. When I get to 7.6 Using Optimization to Identify a Least-Cost Scenario, the optimization scenario is just a duplicate of the natural gas scenario. I don't think I missed any steps in the exercise and I can't figure out what could be causing this. Any insights? Thanks.