New York Rejects Keystone-Like Pipeline in Fierce Battle Over the State’s Energy Future

Activists used that argument to pressure Mr. Cuomo politically with protests and phone-banking campaigns, warning that his progressive credentials would be imperiled if he allowed state regulators to approve the pipeline.

“Banning fracking is a great step in the right direction,” said Robert Howarth, an ecology and environmental biology professor at Cornell University. “Allowing a build-out of gas infrastructure — I think that would just be a very sad addition to that, undercutting the governor’s legacy for sure.”

But Williams and National Grid have considerable political influence, too. Williams hired a lobbying firm, Kivvit, that is led by Mr. Cuomo’s former campaign manager. It also donated $100,000 last year to the Democratic Governors Association, which later gave $20,000 in in-kind contributions to Mr. Cuomo’s campaign.

Mr. Cuomo, who has also made infrastructure a cornerstone of his tenure, has demurred when asked to stop taking money from fossil fuel companies.

The denial was a blow not only to Williams and National Grid but also to New York’s business and labor communities. Vincent Albanese, the director of policy and public affairs for the New York State Laborers, which represents over 40,000 members in the construction industry, said a moratorium on new gas hookups would jeopardize jobs. The union has spent more than $600,000 on Facebook ads in the past year promoting the pipeline, according to Facebook’s database.

Kathryn Wylde, the president of the Partnership for New York City, an influential business group, said investors needed to feel confident in the city’s energy supply.

“The continuity of investment in job creation really depends on certainty about the energy supply,” she said, adding, “It’s clear that it’s not going to be sufficient without the pipeline.”