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Duke Energy Actions

Belews Creek

Duke Energy effectively manages its air emissions by using a diverse mix of fuels to generate electricity, including coal, natural gas, nuclear and hydro, by operating efficiently, and by employing state-of-the-art emission reduction technologies to control sulfur dioxide (SO2), nitrogen oxides (NOx), mercury (Hg) and particulates.

We are in the process of making significant reductions in our SO2 and NOx emissions through the implementation of North Carolina’s landmark Clean Smokestacks legislation and federal Clean Air Act requirements. Over the past decade, we have invested more than $7 billion to significantly reduce sulfur dioxide and nitrogen oxide emissions.

Duke Energy uses a combination of selective catalytic reduction (SCR) technology, selective non-catalytic reduction (SNCR) technology and low NOx burner technology to reduce NOx emissions.

Duke Energy has installed SCR technology on the following coal-fired units:

  • Asheville Units 1 and 2
  • Belews Creek Units 1 and 2
  • Cliffside Unit 5
  • Crystal River Units 4 and 5
  • East Bend Unit 2
  • Gibson Units 1-5
  • Marshall Unit 3
  • Mayo Unit 1
  • Miami Fort Units 7 and 8
  • Roxboro Units 1-4
  • Zimmer Unit 1

SCR technology has been installed on these units because they are among the largest coal-generating units on the Duke Energy system, which allows Duke Energy to achieve the greatest reduction in emissions at the lowest cost to our customers. The units that do not use SCR technology employ SNCR and/or other low NOx burner technology.

Duke Energy is employing flue gas desulfurization (FGD) technology, commonly referred to as a “scrubber,” to reduce SO2 emissions.

Duke Energy has installed scrubbers on the following units:

  • Allen Units 1-5
  • Asheville Units 1 and 2
  • Belews Creek Units 1 and 2
  • Cayuga Units 1 and 2
  • Cliffside Unit 5
  • Crystal River Units 4 and 5
  • East Bend Unit 2
  • Gibson Units 1-5
  • Marshall Units 1-4
  • Mayo Units 1 and 2
  • Miami Fort Units 7 and 8
  • Roxboro Units 1-4
  • Zimmer Unit 1

In addition, Duke Energy is in the process of installing scrubbers on Cliffside Unit 6.

Scrubbers are being installed on these units because they are among the largest coal-fired generating units on the Duke Energy system, which allows Duke Energy to achieve the greatest reduction in emissions at the lowest cost to our customers. Scrubbers are also planned for the six coal-fired generating units in which Duke Energy has an ownership interest but does not operate.

U.S. SULFUR DIOXIDE AND NITROGEN OXIDES EMISSIONS (THOUSAND TONS)8
(Duke Energy, pre-merger with Progress Energy)

SULFUR DIOXIDE EMISSIONS
(Progress Energy, pre-merger with Duke Energy)

NITROGEN OXIDE EMISSIONS
(Progress Energy, pre-merger with Duke Energy)