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NRGreen
NRGreen operates four non-regulated waste heat recovery facilities located in Saskatchewan, along the Alliance Pipeline. The first facility located at Kerrobert, Saskatchewan, has been operating since December 2006. In 2008, NRGreen completed construction on three additional facilities in Loreburn, Estlin and Alameda, Saskatchewan. These facilities began operations in May, July and November of 2008, respectively. Electricity is generated by harnessing the waste heat produced by Alliance Canada’s gas turbines at its compressor stations and converting it to electrical energy. With four waste heat recovery facilities in operation, NRGreen’s facilities can generate 20 MW of power.
SaskPower purchases the power generated from all four of the NRGreen facilities. The PPAs expire 10 years after the in-service date for each facility. However, each PPA permits two five-year renewal notices at NRGreen’s election. These may be renewed successively to provide an additional 10-year extension to the initial PPA.
NRGreen maintenance is performed concurrently with the Alliance Canada semi-annual inspection of the Kerrobert, Loreburn, Estlin and Alameda compressor stations.