TransAlta Renewables Inc. says it has found cracks in several foundations of the turbines at a wind farm in New Brunswick where a tower collapsed in September.
The company says the discovery of the subsurface cracks means the foundations will likely need repairs, and if replacement is required, costs are estimated at $1.5 million to $2 million per foundation.
TransAlta Renewables suspended operations and began an investigation after a tower collapsed earlier this month at its Kent Hill wind farm, 55 kilometres southwest of Moncton, near Prosser Brook.
The suspended operation includes 50 wind turbines at Kent Hills 1 and Kent Hills 2, where the tower collapsed. Five turbines at Kent Hills 3 continue to operate.
The company says the foundation issues at the Kent Hills 1 and 2 sites are unique to the design of those sites, and there is no indication of any foundation issues at the Kent Hills 3 site or the company’s other locations.
It estimates the outage will result in the loss of $3.7 million per month in potential earnings for as long as all 50 turbines are offline, based on average historical wind production.
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