Alberta commission okays 43-MW cogen project of Imperial Oil

The Alberta Utilities Commission on Feb. 4 approved an application by Imperial Oil Ltd. for construction and operation of a 43-MW cogeneration plant within the boundary of its Strathcona refinery in Strathcona County, east of the city of Edmonton.

The power plant would consist of one gas turbine generator, one heat recovery steam generator, and related auxiliary equipment. The project would also result in modifications to the existing Imperial-owned Strathcona refinery substation.

The Strathcona refinery was built in 1976. It does not have on-site power generation and is currently supplied by AltaLink Management Ltd.’s 138/13.8-kV substation 95S connected to the Alberta Interconnected Electric System through two 138-kV transmission lines. The substation 95S is located west of the Imperial-owned substation. The power plant would enable Imperial to supply its own electrical power and would produce approximately 80% of the 53-MW electricity requirement of the refinery and up to 280,000 lb/hour or about 50% of the steam for the Strathcona refinery. One of the Strathcona refinery’s utility boilers would be shut down as a result of the proposed power plant’s steam generation capability.

The application said the cogen project will include installation of a new 43 MW (ISO) General Electric Frame 6B gas turbine generator (GTG) and electrical facilities. In conjunction with the cogen, there will be a fuel gas-fired heat recovery steam generator (HRSG) constructed which will produce the steam to meet about 50% of the refinery needs.

Imperial Oil’s Strathcona Refinery is located immediately east of Edmonton in Strathcona County. The refinery processes Alberta light sweet, synthetic and heavy crude oils to produce a variety of products such as gasoline, jet fuel, diesel and lubricating oils.

The cogen plant will use natural gas fuel from the TransCanada PipeLines Alberta System. The natural gas will be delivered to the plant by pipeline. The natural gas will be used as fuel for the gas turbines as well as for supplemental firing of the heat recovery steam generators.  The natural gas fuel will be supplemented with produced fuel gas from the Strathcona Refinery.

About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.