Meikle Wind Energy 230kV Switchyard

Meikle Wind Energy 230kV Switchyard

Client: SNC Lavalin

Owner: BC Hydro

Project Status: Complete, In service

Location: 33km Southwest of Tumbler Ridge BC

Voltage: 230kV

Length: 10 months

Category: Substations

The Project

This switchyard is the BC Hydro POI (point of interconnection) for BC’s largest wind farm owned by Pattern Energy; the Meikle Wind Farm. It consists of 61 GE turbines which generate 180MW at full capacity.  Allteck was the General contractor on the project, performing all the work in house from the civil and concrete foundation work to the electrical and 230kV line work.  The substation completion and in service date was 3 weeks ahead of schedule and the overall cost was $500,000 under the SNC Lavalin budget.

The Challenges

The civil work and concrete foundations were installed in the dead of winter between November 2015 and April 2016. 600 cubic meters of concrete was poured into 56 spread footing foundations up to 20 feet underground while the outside ambient temperature averaged -20 degrees Celsius.  This required specialized heating and hoarding which included a 10,000sq.ft hoarding constructed to complete the control building foundation in above freezing conditions.  These temporarily helped to accelerate the overall schedule and beat the completion milestone.

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