The Neptune Cable is a 500kV and 660 MW^[1] high-voltage direct current submarine power cable between Sayreville, New Jersey and New Cassel, New York, on Long Island.^[2] It carries 22 percent of Long Island's electricity.^[3] It was developed by Anbaric Development Partners.

The cable is managed by Fairfield, Connecticut-based PowerBridge, LLC.^[1]

The power plant was developed as part of a 2003 request for proposal from the Long Island Power Authority for new generating plants on Long Island^[4] that was a response to the Northeast blackout of 2003 and delays by Connecticut in activating the Cross Sound Cable,^[5] and due to continued high peak demand over multiple years.^[6][7] This solicitation also resulted in construction of the Caithness Long Island Energy Center; Bethpage Energy Center; and Pinelawn Power Plant in West Babylon, New York.^[7]

The cable was constructed following the Long Island Power Authority's determination that importing electricity would make more sense economically than constructing new power generating stations on Long Island.^{[citation needed]}

• Sayreville Energy Center
• Red Oak Power
• Bayonne Energy Center
• Bergen Generating Station
• Cross Sound Cable
• Y-49 Cable
• Y-50 Cable