Vale, Copper Cliff South Mine #7 69kV/6.9kV Substation Relocation

Location : Sudbury, Ontario

Year : 2019

Client : Vale

Project type : Feasibility study and cost estimations

Scope : 

Full scope detailed engineering service including geotechnical, civil and electrical expertise.

The design of the substation is a single supply dual transformer configuration with provisions for a second in the future.

Two identical 69/6.9kV, 7.5/8.4 MVA transformers will be used for full redundancy if one unit requires servicing.


  • mining site before capital expenditure estimation