Long Term Adequacy Metrics

As part of our commitment to timely and transparent communication with stakeholders, the AESO has been publishing long term adequacy (LTA) metrics to our website since 2008.  These metrics were developed in consultation with stakeholders and serve as key indicators monitoring the available long term supply of electricity in the province. The metrics include the following information:

1.      New Generation Projects and Retirements
2.      Reserve Margin
3.      Supply Cushion
4.      Two Year Probability of Supply Adequacy Shortfall

Background information explaining the rationale for the selection of these metrics and the calculation methodology is provided in the Long Term Adequacy Paper available on our website. ISO Rule 202.6 describes the means by which the AESO monitors and reports on the long term adequacy of the Alberta wholesale electricity market.