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Transmission Load Interconnections

We assist in the development of large load that are planning to interconnect to the transmission system in our service territory.

We can support load projects that are Eversource retail customers or ISO New England Regional Network Service (RNS) and Local Network Service (LNS) customers. Transmission load interconnections may be subject to either ISO New England tariff or an Eversource state tariff.


  • Data center
  • Large manufacturing or processing facilities
  • Large electric vehicle (EV) charging stations
  • Large load increases due to reduction in carbon footprint or electrification

Services we can provide include the following and often result in a transmission service agreement:

  • Preliminary engineering screening review
  • Cost estimates
  • Potential alternatives
  • General guidance and support