ATCO Power Canada Ltd. on Dec. 16 sought from the Alberta Utilities Commission an amendment to March 24 power plant approval, with the amendment to reflect proposed changes to the existing Temporary Power Plant at Apache Canada Ltd.’s House Mountain Gas Plant.
Alternatively, if the commission deems it appropriate, ATCO Power requested a new Power Plant Approval to construct and operate the proposed Permanent Power Plant at the House Mountain Gas Plant.
Apache’s House Mountain Gas Plant processes hydrocarbons from the House Mountain Field, a development that has been in active since the 1970s. In an effort to better utilize the production at House Mountain, mitigate the amount of sales gas that is being flared, and reduce large vehicle traffic on local roads, ATCO Power and Apache permitted, constructed and is currently operating a Temporary Power Plant at the House Mountain Gas Plant. This facility consists of four, natural gas-fired reciprocating engines, each with an operating capacity of 1.24 MW, for a total installed capacity of 4.96 MW. The engines are housed within trailer mounted sea cans and are electrically connected to via a temporary 4160V / 25 kV transformer to the local ATCO Electric distribution system.
Over the past year, ATCO Power and Apache have developed a Permanent Power Plant solution that will replace the Temporary Power Plant. The permanent plant is proposed to consist of five Jenbacher JGS420 natural gas-fired reciprocating engines, each with an operating capacity of 1.42 MW, for a total installed capacity of 7.10 MW. At ATCO Electric’s request, the facility will be programed via on-board automatic generator controllers to a net output of 6.00 MW. The engines will be housed within modified sea can enclosures, delivered to site on semi-trucks, and electrically connected via a 4160 V / 25 kV transformer to the local ATCO Electric distribution system.
As with the existing Temporary Power Plant, the Permanent Power Plant will deliver electricity straight to the Alberta market (the gas processing plant will continue to consume electricity directly from the grid). The Permanent Power Plant has a proposed in-service date of May 1, 2016. It is important this proposed in-service date is met due to commitments made to Alberta environmental regulators with respect to flaring.