BOSTON (CBS) – Almost exactly a week after Tropical Storm Irene knocked out power for more than 500,000 Massachusetts residents, service has been restored to almost everyone.

As of Saturday evening, a few hundred people were without power, but both NSTAR and National Grid said that all of those customers would have their electricity back by the end of the day.

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Many businesses are still working to get back on track from the storm.

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Officials have said they expect damages from Irene to cost billions of dollars.