Overview
Dunbarton Tap Substation is an operational 230 kV substation in New Hampshire, United States, owned and operated by National Grid. It plays a key role in regional high-voltage transmission.
Dunbarton Tap Substation is a high-voltage electrical substation located in New Hampshire, United States. Operating at 230 kV, it is part of the bulk power transmission system that interconnects generation sources with distribution networks. The facility is owned and operated by National Grid, a major utility serving the northeastern US. As a 230 kV substation, Dunbarton Tap operates within the regulatory framework of the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC). These bodies enforce reliability standards for transmission assets, including voltage control, protection systems, and cybersecurity. The substation likely employs modern switchgear and automation per IEC 61850 standards to ensure grid stability. The substation's location in New Hampshire places it within the ISO New England (ISO-NE) market, which manages the regional grid. Its role is critical for maintaining voltage stability and power flow in the area, supporting both urban and rural loads. The facility's operational status ensures continued reliability for the local community and downstream industrial and residential customers.
Environmental context
The substation is situated in a rural area of New Hampshire, characterized by mixed forest and low-density residential development. Its 230 kV voltage level indicates a key role in the regional transmission network, with potential environmental considerations including electromagnetic field management and vegetation clearance for right-of-way. The site's proximity to natural habitats may require adherence to state-level environmental regulations for construction and maintenance activities.
Frequently asked questions
Dunbarton Tap Substation is located in New Hampshire, United States, at coordinates 43.064301, -71.579777. It is operated by National Grid.
Dunbarton Tap Substation operates at 230 kV, which is a high-voltage transmission level used for long-distance power transfer in the US grid.
Dunbarton Tap Substation is owned and operated by National Grid, a major utility company serving the northeastern United States.
Substations in the US must comply with NERC reliability standards and FERC regulations. These cover voltage control, protection systems, and cybersecurity. Additionally, IEC 61850 standards for substation automation may be applied.
A 230 kV substation is a critical node in the high-voltage transmission network, stepping voltage up or down for efficient power transfer. It helps maintain grid stability and reliability by connecting generation, transmission lines, and distribution systems.