By: Nigel Bankes
PDF Version: Court Confirms that the AUC Can Take the Lead in Examining the Scope of the ISO’s Reporting Obligations
Case Commented On: Independent Power Producers’ Society of Alberta v Independent System Operator (Alberta Electric System Operator), 2016 ABQB 133
Alberta has a competitive electricity market which functions through the power pool coordinated by the Independent System Operator (ISO) known in Alberta as the Alberta Electric System Operator (AESO) (see the Electric Utilities Act, SA 2003, c E-5.1 ss 17 – 18 (EUA)). In simple terms power producers bid blocks of power (price/quantity pairs) into the pool at the price at which they are prepared to be dispatched (e.g. GenCo bids 10 MW at $40/MWh) on an hourly basis for the following seven days. Generators may change their offer prices closer to real time as the market unfolds: see MSA, Alberta Wholesale Electricity Market, 2010. The ISO ranks all bids in merit order (i.e. starting with the lowest bids) and moves up the ladder of bids until supply meets the load (demand). The last unit dispatched sets the system marginal price which is received by all generators which are dispatched. Thus, if the price settles at $80/MWh that is the price that GenCo will receive. If the price settles at $30/MWh GenCo will not be dispatched. See AESO, “Determining the Wholesale Market Price for Electricity”.