Eversource said the recovery process is ongoing but phase one, which was to shut off the 8,600 impacted gas meters and restore 15,000 power outages, is complete.
Leonel Rondon, 18, was killed after a chimney that had been blown off a home in one of the explosions struck a auto in Lawrence, CNN affiliate WHDH reported. "I often say the people of MA are resilient and this devastating situation is no exception", said Baker.
Investigators suspected the fires were caused by "over-pressurisation of a gas main" belonging to Columbia Gas lines.
Without gas service, many residents in North Andover, Andover, and Lawrence will be without heat, hot water or the ability to cook.
Witness accounts suggest the incidents began at about 16:30 local time (20:30 GMT).
Sumwalt also noted there are 14 gas pressure regulators in the area and that investigators plan to test all of them and make sure they are all operating properly.
Shelters were later set up in schools, churches and other properties, while roads leading into the areas affected were closed.
Mayor Daniel Rivera of Lawrence, one of the affected towns, said of the company, "It just seemed like there's no one in charge, like they're in the weeds, and they've never seen this before".
NTSB Chairman Robert Sumwalt told reporters in Washington the agency sent a "go-team" of investigators to the area. A final report could take up to two years.
Andover Fire Rescue Chief Michael Mansfield likened the scene to "Armageddon".
Almost all residents in the area have had power restored, he said. Ed Markey and Elizabeth Warren of MA called for a congressional hearings on the explosions and fires. He later died at the hospital, authorities said. The integrity management system of the pipeline operator Columbia Gas.
Baker's selection of the New England utility was a rebuke to NiSource Inc., which owns the pipeline system that erupted and was criticized by Baker for an inadequate response to the Thursday blasts. Later, that company became part of TransCanada. The company a subsidiary of NiSource, a utility company that serves more than three million customers in seven states. The company also provides electric distribution, generation and transmission services to nearly 500,000 customers in northern in as well.