Your browser is no longer supported

To get the best experience with www.aeso.ca, we suggest using a newer version of Internet Explorer/Edge, or using another supported browser such as Google Chrome.

ETS users may continue to log in using Internet Explorer 9 using the upper right hand link marked ETS Login.

    Status of Sundance Unit 1 (SD1) and Sundance Unit 2 (SD2) effective January 1, 2018

    TransAlta has notified the AESO of the following: 

    • Retirement of Sundance Unit 1 effective January 1, 2018;
    • Mothballing of Sundance Unit 2 effective January 1, 2018, for a period of up to 2 years