Making sure there’s enough electricity at the lowest price is a critical endeavor undertaken daily by electricity market operators. Grid operators must continually ensure that power supply meets demand in real time. Now, there’s an approach that provides more timely and accurate information to make decisions in the day-ahead timeframe. Pacific Northwest National Laboratory (PNNL) developed a new computational tool in collaboration with the Midcontinent Independent System Operator (MISO), which operates one of the largest wholesale electricity markets in the world. Gurobi Optimization, GE Grid Solutions, the University of Florida, and Cognitive Analytics also are partners in the project. The project was initially funded by the U.S. Department of Energy’s (DOE’s) Advanced Research Projects Agency-Energy through its OPEN 2015 funding opportunity.