New York is set to fine utility National Grid millions of dollars for failing to not connect residential customers with natural gas, a move that was required by the state’s main utility regulatory agency, Gov. Andrew Cuomo’s office on Friday said.

The controversy affects more than 1,100 customers who have previously been denied service.

At the same time, Cuomo announced the Public Service will expand its investigation to determine whether the company planned well enough to meet the needs of its customers.

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

“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.”

Meanwhile, PSC Chairman John Rhodes issued an order to show cause that will require National Grid to immediately connect 1,157 residential and business customers and to implement an alternative supply.

“With the winter heating season beginning, the Department of Public Service has determined that immediate action is warranted to address the customer hardships created by National Grid’s unwarranted denial of service for 1,157 of its customers in New York City and Long Island,” Rhodes said. “The law requires utilities to provide gas service without unreasonable qualifications or lengthy delay when sufficient gas supply exists, which the order alleges is the case for these previously existing customers of National Grid who found themselves suddenly cut off from gas without adequate warning and preparation.”