Power quality problems: what are the costs and impacts on electronic equipment?

The costs of power quality disturbances to electronic equipment can be very large. In many facilities the costs can include damaged equipment that must be replaced, loss of building comfort and efficiency leading to complaints by users or in the worst case a loss of tenants or frequent downtime from equipment that seems to not operate correctly or frequently reboots for no apparent reason. There is really no standard methodology or equation that has been published that helps people quantify their overall costs from power quality.