The 625-MW, gas-fired L.V. Sutton plant of Duke Energy Progress has begun serving North Carolina and South Carolina customers, Duke Energy (NYSE: DUK) said on Dec. 11.
The approximately $600m combined-cycle plant replaces the existing three-unit, 575-MW coal-fired plant at the site that the company recently retired after 59 years of service. The new plant uses state-of-the-art technology and air quality controls that result in significantly lower emissions than those of the coal plant it replaces. The following figures are compared to coal plant operations in 2007:
- SO2 will be reduced by 99%;
- NOx will be reduced by 97%; and
- CO2 will be reduced by 41%.
“We continue to transform our power plant fleet while maintaining our focus on generating electricity that is both reliable and affordable,” said Allen Clare, Duke Energy Progress’ Sutton plant manager. “Our new natural gas plant is another stride forward in meeting customer needs using highly efficient, increasingly clean energy sources.”
Duke Energy has invested $9bn in the last 10 years to build several advanced natural gas and coal plants in North Carolina and Indiana. The new plants will allow the company to retire nearly 6,800 MW of older coal- and large oil-fired units.
Nearly 6,300 MW of the capacity Duke Energy will retire is coal, which represents 25% of its coal fleet. By the end of 2013, Duke Energy will have retired more than 3,800 MW of that 6,300 MW, including the Sutton coal plant.
Sutton’s first coal unit began operating in 1954, with two additional units added in 1955 and 1972, respectively. Duke Energy said it will soon begin a multiyear plant decommissioning process that will result in safely deconstructing the coal units and effectively closing the site’s coal ash basins to protect groundwater.