Calgary-based electricity producer TransAlta Corp. is suing the Alberta government and the Alberta Energy Regulator to prevent oil and gas companies from fracking near its largest hydroelectric dam in the province because the technique can cause earthquakes. The court action, which was filed in September in the Court of King's Bench of Alberta, takes place as two oil and gas companies have applied to frack within five kilometres of the dam. TransAlta is concerned about possible seismic activity causing damage to the Brazeau power plant, near Drayton Valley in central Alberta, as well as the loss of wildlife, habitat and human life.