DUK ▼ -1.0% - Duke Energy Corporation $DUK - Duke Energy asks Carolinas customers to reduce electricity use during today's peak-demand period Duke Energy shares fell 1.0% today after the utility asked its Carolinas customers to voluntarily reduce electricity consumption during peak-demand hours. The conservation request suggests tight supply conditions or grid stress that could signal operational challenges or concerns about the company's ability to meet demand without additional strain on its system. 18-SEP-2026 01:22 PM ET