GridLab worked with the North Carolina Sustainable Energy Association and local solar developers to create an “alternative” to Duke Energy’s gas-heavy IRP. Duke had proposed 9,000 MW of new gas power plants over the next few years, with minimal investment in clean energy. GridLab retained Synapse Energy Economics to model a “Clean Energy Future” that included no new gas, reduced coal dramatically, and relied instead on solar and batteries. This clean energy future cost less, dramatically reduced emissions, and increased health outcomes. Our intervention has provided advocates with an additional technical resource to challenge the utilities future fossil fuel investments and encourage rejection of the plan by the commission.