Although the vendor and the IESO had both carried out extensive testing of the day-ahead clearing software, PA’s mathematically focused testing uncovered ten defects, seven of which were deemed to have a material impact on the results of the market. Our experts identified the changes required to correct the software parameters and the mathematical formulation of market rules.
Following PA’s confirmation testing of the improved software, the enhanced market launched without a hitch. The design of the new market and improved system operation will bring about efficiencies that are expected to reduce costs to consumers by up to $17 million per year.
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