TransAlta Sundance Unit 1 and 2 Decommissioning Costs

TransAlta Sundance Unit 1 and 2 Decommissioning Costs

The AUC is reviewing an application for approval to recover the costs associated with decommissioning the Sundance 1 and 2 generating units



The Alberta Utilities Commission is currently considering an application from TransAlta Corporation for approval to recover the costs associated with the decommissioning of the Sundance 1 and 2 generating units. The costs applied for in the decommissioning costs application include the future decommissioning costs of the Sundance 1 and 2 generating units, a proportionate share of costs to reclaim the Highvale Mine and costs for the reclamation of other associated facilities. 

If approved, the costs will be paid by the Balancing Pool. 

On January 30, 2020, the AUC​ held a pre-hearing meeting with parties to discuss procedural matters including the:

  • Development of a finals issues list
  • Determination of a process schedule
  • Addressing other party requests and procedural matters

The Commission will be determining next steps for the proceeding​.

Please visit the Review process and Have your say sections of the AUC website for more information about the process used to assess and consider applications for cost recovery for utility projects in Alberta.

The eFiling System​

The eFiling System should be accessed to view the applications and the other documents the AUC will be considering in this proceeding. The system is also used to file submissions and evidence to participate in the proceeding.

To create an account, select "New account" and follow the steps to create a user ID and password. If you have any questions about how to use the system please contact us at or 310-4AUC.

Documents being considered in this proceeding can be found in the eFiling System (which requires log in). Once you have logged in, enter 23778 in the "go to" section at the top left corner of your screen.

Have your say about a utility project has more information regarding your options for participation.

Proceeding 23778                 Register

Application status: under review

 Hearing: Deferred until further notice

 Location: To be determined

 Decision expected: To be determined​

AUC contacts: 

Taylor McCusker 403-592-4370 or

 TransAlta Corporation contact: 

Laura-Marie Berg 403-267-7527 or

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Anyone can access applications and proceeding information through the eFiling System.

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