Scheduled Back Bay Outage Went As Planned Overnight

About 8,000 NStar customers in the Back Bay lost power again early Saturday morning while the company switched customers from a temporary connection back to the permanent underground network.

An NStar spokesperson says the planned outage, which began at 3 a.m., lasted only an hour.

Boston Mayor Tom Menino wants NStar to reimburse the city and local customers for losses as a result of the the black out, which began Tuesday evening after a 115,000-volt transformer caught fire, initially knocking out power to about 21,000 customers.

NStar spokesman Michael Durand says the company is still figuring out whether the city or NStar customers will receive any reimbursements.

"Our focus right now continues to be on making repairs and re-energizing our underground network," Durand said. "Afterwards, we'll focus on the issues that the mayor has raised."