The Cuomo administration is ordering National Grid to provide natural gas hookups to over 1,100 previously denied Brooklyn-based customers.

The Public Service Commission, the state body that licenses and oversees public utility companies, announced Friday that National Grid must provide service to customers or else face “millions of dollars in penalties.”

Previously, 1,157 customers had been denied service due to National Grid’s moratorium on all new gas hookups, announced in May.

The gas company alleged it cannot provide new gas service hookups because plans for the Williams Pipeline were nixed, and current supplies are waning.

The project would bring a new supply of natural gas from New Jersey into New York, if approved.

The Public Service Commission said it has the authority based on a section in Public Service Law that says if a gas company is unable to meet the needs of reliable service to customers, the state has the power to step in. National Grid could not be reached immediately for comment.

Cuomo has reiterated opposition to the proposal.

He also announced the Department of Public Service is expanding its ongoing investigation into the company, to determine whether or not National Grid properly prepared for customer needs and expected shortages during the winter months.

“It is the fundamental responsibility of our utilities to provide reliable service,” said Cuomo.

“National Grid has acted in bad faith throughout this process — first by denying over 1,100 eligible customers with service and now by failing to fulfill its core responsibility. Today, National Grid is being ordered to immediately connect those 1,100 customers, and I have directed DPS to expand their ongoing investigation to include potential negligence in not preparing for the months ahead. Make no mistake, New York will hold National Grid accountable.”