DUK · 8-K · 20260804PR000037

Generation Capacity and Utilization

Duke Energy CORP · 2026-08-04 · Importance 37 · Surprise 32

Owned summer generating capacity increased to 52,048 MW from 50,569 MW year over year across Electric Utilities and Infrastructure. Duke Energy Florida's summer capacity rose 9.9% to 11,929 MW, while Duke Energy Progress increased summer capacity 2.2% to 12,865 MW. Nuclear capacity factors were 93% in the second quarter at both the overall electric segment and Duke Energy Carolinas, down from 99% and 100%, respectively, in the prior-year quarter. Duke Energy Indiana increased second-quarter total generation 12.3% and natural-gas-and-oil generation 17.9%, while purchased power declined 22.0%.

Key facts

• Company collectively owns 55,700 megawatts of energy capacity source
• Total generation for Electric Utilities and Infrastructure for Three Months Ended June 30, 2026: 51,559 GWh, up 1.0% versus 2025. source
• Duke Energy Carolinas owned summer MW capacity: 19,842 MW for 2026 and 19,745 MW for 2025. source
• Duke Energy Florida owned summer MW capacity: 11,929 MW for 2026 and 10,855 MW for 2025. source
• Owned Summer MW capacity for Electric Utilities and Infrastructure: 52,048 MW. source
• Nuclear capacity factor reported: 93% (note: 100% for jointly owned stations is indicated in footnote). source