As society makes the transition to cleaner sources of energy, conventional generation plant still has an important role as a bridge to that greener future by keeping the grid reliable.

Through National Grid Generation (GENCO) we safely and efficiently operate conventional generation assets that are vital to security of supply in the Northeastern United States and keep the lights on for two million people on Long Island.

We operate three large steam turbine generating plants in the Long Island generation fleet – Barrett, Port Jefferson, and Northport. In total, the fleet capacity is almost 4GW, which is about 65% of the peak generating capacity on Long Island. We also own and maintain two large-scale battery energy storage systems, one in East Hampton and one in Montauk, as well as a 23MW solar farm in Riverhead.

For a cleaner future

The Climate Leadership and Community Protection Act (CLCPA) requires all our existing conventional generating units in New York to be retired or repurposed to use zero-carbon fuels. We’re actively working towards this goal, not just because it’s a requirement, but because it will bring us closer to a cleaner energy future.

More on the CLCPA

We expect that a portion of our current generating capacity will need to stay online through to 2040 to provide power during times of high demand and low supply from renewables. However, the plants will run fewer and fewer hours each year as more and more offshore wind comes online. 

We’re also exploring how we can leverage existing generation sites on Long Island to deploy new and emerging technologies from battery energy storage to zero-carbon power generation from green hydrogen.  

The transition of our conventional generation fleet is part of a wider clean energy journey which has seen us develop large-scale battery storage and solar projects in New York, which align with the State’s ambitious actions on climate issues.

Our generation fleet has a capacity of almost 4GW, which is about 65% of the peak generating capacity on Long Island.


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