PSEG Long Island on Friday said its President David Daly is stepping down from his post after less than four years on the job to take the reins of sister company PSE & G of New Jersey.

Daniel Eichhorn, vice president of customer services for PSEG Long Island, will take over Daly’s former post.

The moves are effective Oct. 2.

Daly, 55, took over as president and chief operating officer of the newly created PSEG Long Island in October 2013.

He has seen the company make strides in customer satisfaction, and has overseen a fortification of the electric grid. The utility was “most improved” in a recent JD Power customer satisfaction ranking.

PSEG declined to make Daly available for an interview.

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Eichhorn, 54, joined PSEG Long Island in October 2013, overseeing its customer services organization while directing marketing, customer contact, meter-to-cash functions, and solar and energy efficiency programs.

Eichhorn previously spent 25 years with PSE & G in New Jersey in electric and gas operations. He has a bachelor of science degree in electrical engineering and a Master of Business Administration in finance from Drexel University.

Assemb. Fred Thiele (I-Sag Harbor) said he respected Daly’s professionalism through trying times.

“Dave Daly and I were often at odds about the future electric needs of Long Island, the need for transparency in utility dealings with the public, as well as corporate responsibility to respect the community character of the East End,” said Thiele.

Nonetheless, Daly “guided Long Island’s energy future during a very difficult period after the debacle of superstorm Sandy. I respect his professionalism,” Thiele said.

Daly will keep a position with the Long Island operation. On Oct. 2 he will assume the role as chairman of the PSEG Long Island board, replacing Ralph LaRossa whom he is replacing at PSE & G. LaRossa becomes president and chief operating officer of PSEG Power, the company’s power generation company.