DA2014-58
March 11, 2014
ENMAX Power Corporation
141 50th Avenue S.E.
Calgary, Alberta T2G 4S7
Attention:
Grant Weismiller
Director, Regulatory Affairs
Reconfiguration of Transmission Structures at ENMAX No. 15S Substation
Application No. 1610317
Proceeding ID No. 3077
Letter of enquiry approval
ENMAX Power Corporation (ENMAX Power), by Application No. 1610317, registered on
February 18, 2014, filed a letter of enquiry with the Alberta Utilities Commission (AUC or the
Commission) under Section 11 of the Hydro and Electric Energy Regulation for approval to
remove the existing 69-kilovolt underground cable at ENMAX No. 15S substation and replace it
with overhead conductors, including the addition of three wooden transmission structures within
the substation fenced area and one just outside of the fenced area. The proposed work is in
relation to facilities previously constructed and operating in accordance with approvals granted
in Permits and Licences No. EN 98-12,1 No. U2005-209, 2 and No. U2010-132, 3 for
ENMAX No. 15S substation, transmission line 69-15.60L, and transmission line 15.62L,
respectively.
ENMAX No. 15S substation is located in the southwest quarter of Section 26, Township 24,
Range 2, west of the Fifth Meridian, at the street address of 1411 Home Road N.W., Calgary.
ENMAX Power submitted its reason for requesting the reconfiguration of transmission structures
was that an insulating pothead that transitions electrical power from underground
cable to overhead lines failed catastrophically on a lattice structure just outside of
ENMAX No. 15S substation causing damage to nearby properties. ENMAX Power stated that
removing the potheads and abandoning the underground cable would prevent future failures.
ENMAX Power consulted with the parties directly affected by the proposed route realignment
and confirmed that there were no objections.
In accordance with the requirements of Section 12 of the Hydro and Electric Energy Regulation,
ENMAX Power has provided information respecting the need, nature, extent, land affected, land
ownership and the timing of the work. ENMAX Power has also stated that no adverse
environmental impact will be caused by the proposed work.
1
2
3
Permit and Licence No. EN 98-12, Application No. 970516, January 5, 1998.
Transmission Line Permit and Licence No. U2005-209, Application No. 1395120, May 30, 2005.
Transmission Line Permit and Licence No. U2010-132, Application No. 1605793, Proceeding ID No. 458,
March 26, 2010.
The Alberta Utilities Commission
March 11, 2014
Page 2 of 2
Based upon the information provided, ENMAX Power has demonstrated that the proposal is of a
minor nature, no other person is directly and adversely affected by the proposal and no adverse
environmental impact will be caused by the proposed alterations, thereby meeting the
requirements of Section 11 of the Hydro and Electric Energy Regulation.
The Commission approves the application. No amendments are required to the permits and
licences.
Wade Vienneau
Executive Director – Facilities
On behalf of the Alberta Utilities Commission