Coal and Pet Coke Facilities

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Coal and Pet Coke Facilities

We operate four plants that use coal or pet coke in Nova Scotia: Lingan, Point Aconi, Point Tupper, and Trenton.

LIngan Generating Station
Generating Capacity 620 MW
Location Lingan, Cape Breton Island
  • Constructed in the 1970s, Lingan's four units were commissioned separately from 1979-1983. Lingan is Nova Scotia Power’s largest generating station. 
  • ‘Low-NOx’ combustion systems were installed from 2006 to 2008 on all four units. The systems help prevent the creation of nitrogen oxides with a resulting reduction in NOx emissions of about 40 per cent.
  • In 2012 NS Power announced that two of Lingan's units would be operated only on a seasonal basis due to decreased industrial load, increased renewable energy use and to meet environmental requirements.

Point Aconi Generating Station
Generating Capacity 171 MW
Location Point Aconi, Cape Breton Island

Due to its design, Point Aconi is primarily fueled by pet coke, which is a solid by-product of the oil refining process.

  • Point Aconi is Nova Scotia Power’s newest and most environmentally progressive generating station.
  • The plant’s circulating fluidized bed technology means it can use pet coke in its boiler while significantly reducing emissions. Pet coke has a high heating value compared to coal and is usually lower cost than coal, but it also has a higher sulphur content. Point Aconi has a 90 per cent reduction of sulphur dioxide emissions and lower nitrogen oxide emissions than typical coal boilers because of its special boiler technology.
  • Point Aconi has greater fuel flexibility than the other three coal plants because the exhaust flue gas that comes out of the boiler goes into a baghouse that filters particulate emissions.

Point Tupper Generating Station
Generating Capacity 154 MW
Location Point Tupper, Cape Breton Island
  • Point Tupper Generating Station was commissioned as an oil-burning unit in 1973. It was converted to coal and recommissioned in 1987. 
  • A ‘Low-NOx’ combustion firing system was installed in 2008 to prevent the creation of nitrogen oxides.
  • The main boiler exhausts flue gas through its own electrostatic precipitator designed to capture 99 per cent of fly ash emissions.

Trenton Generating Station
Generating Capacity 307 MW
Location Trenton, Nova Scotia
  • Trenton Unit 5 was commissioned in 1969 and underwent a multi-million dollar complete refurbishment in 2009, leading to improved efficiency with the unit. 
  • The refurbishment at Unit 5 included a new generator and a ‘baghouse’, a technology that acts as a large filter for the plant’s emissions. It significantly reduces fly ash emissions and allows the plant to have greater fuel flexibility. 
  • Trenton Unit 6 was commissioned in 1991 and was modified with a ‘Low-NOx’ combustion firing system in 2008 to prevent the creation of nitrogen oxides. 
  • Both Trenton units have electrostatic precipitators designed to capture 99 per cent of fly ash emissions from coal burning.