"They were as accommodating as they were able to be under the circumstances," he said.
Puritz said NSTAR told him that 776 Sharon residences, or about 12 percent of the town, were still dark as of 5 p.m. Tuesday.
He expected that fewer homes remained without electricity later that night, when the selectmen's public meeting was wrapping up.
On its website, NSTAR reported that 493, or 7.4 percent, of its 6,652 Sharon customers remained without electricity as of 8 p.m. Tuesday. The utility estimated those outages ending Wednesday evening.
"Their (NSTAR's) resources, frankly, were over-taxed," Puritz said.
Puritz praised Sharon's public works, civil defense, fire and police departments for their work on the storm.