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Duke Energy: Modernizing with Combined-Cycle Natural Gas

Discover Duke Energy's strategy to modernize and reduce emissions by investing in clean, efficient natural gas plants. Learn about their plans to retire older coal units and expand their natural gas capacity.

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Duke Energy: Modernizing with Combined-Cycle Natural Gas

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  1. GenForum: The Growing Muscle of Combined-Cycle Natural Gas Julie Turner | Dec. 8, 2014

  2. Duke Energy • Largest electric power holding company in the United States with approximately $115 billion in total assets • Regulated utility operations serve approximately 7.2 million electric customers located in six states • Commercial power and international business segments own and operate diverse power generation assets in North America and Latin America, including a growing portfolio of renewable energy assets in the United States • Fortune 250 company traded on the New York Stock Exchange under the symbol DUK

  3. Why Invest to Modernize? • Environmental regulations increasingly stringent for air, water and waste • Coal fleet was aging, requiring extensive evaluation about units to retire or retrofit • Install new technology to reduce emissions • New and more efficient plants reduce fuel needed • Maintain diversity of fuel sources • Increasing natural gas capacity allows us to leverage a flexible fuel at lower prices, providing customer savings

  4. Diverse and Cleaner Fuel Mix • Diverse mix helps us meet our obligation to provide affordable, reliable and increasingly clean electricity for customers Hydro Renewables Coal Nuclear Natural Gas

  5. Our Strategy • Build • Invested $9 billion in the last decade in building some of cleanest natural gas and coal plants possible today, increasing flexibility and reducing emissions • Planning to build two new natural gas plants and convert other units across the system • W.S. Lee CC (Anderson, S.C.) • Citrus County CC (Citrus County, Fla.) • Anclote conversion project (Pasco County, Fla.) • Retire • Planning to retire nearly 6,800 MW of older coal and large oil-fired capacity • Represents about 25 percent of coal fleet • Retired more than 3,800 MW of this older coal capacity by the end of 2013 • Expand • Invest in the Atlantic Coast Pipeline project to bring natural gas fuel source to other areas

  6. Atlantic Coast Pipeline Length: Approximately 554 miles Pipe: West Virginia: 42-inch diameter Virginia: 42-inch diameter North Carolina: 36-inch diameter Secondary line: 20-inch diameter Capacity: 1.5 billion cubic feet/day Three compressor station locations: • Lewis County, West Virginia • Buckingham County, Virginia • Northampton County, North Carolina Route: A proposed route is being studied. Dominion is collecting data through surveys and consultations with landowners and other stakeholders to determine the best route with the fewest potential impacts to environmental, cultural and historical resources. Secondary line

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