Overview
Johnston Substation is an operational electrical substation in Rhode Island, United States, owned by Rhode Island Energy. It handles multiple voltage levels including 115 kV, 23 kV, and 12.47 kV.
Johnston Substation is an operational electrical substation located in Rhode Island, United States. Owned and operated by Rhode Island Energy, the facility serves as a critical node in the regional power grid, stepping down transmission-level voltages for local distribution. The substation operates at voltage levels of 115,000 volts (115 kV) for transmission, along with 23,000 volts (23 kV) and 12,470 volts (12.47 kV) for sub-transmission and distribution. This multi-voltage configuration is typical for substations that interconnect high-voltage transmission lines with lower-voltage distribution networks, ensuring reliable electricity supply to residential, commercial, and industrial customers in the area. As part of Rhode Island Energy's infrastructure, Johnston Substation plays a key role in maintaining grid stability and supporting the state's energy needs. The facility operates under the regulatory framework of the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC), which enforce reliability standards for bulk power systems. Its location in an urbanized area underscores its importance for local power distribution and community resilience.
Environmental context
The substation is situated in an urbanized area of Rhode Island, where electrical infrastructure is critical for supporting dense population centers and commercial activity. The facility's voltage levels indicate its role in both transmission and distribution, with potential environmental considerations related to electromagnetic fields and land use. The surrounding region experiences a temperate climate, with seasonal weather patterns that may influence grid operations and maintenance schedules.
Frequently asked questions
Johnston Substation is located in Rhode Island, United States, at coordinates 41.814366, -71.474869. It is owned and operated by Rhode Island Energy.
Johnston Substation operates at multiple voltage levels: 115,000 volts (115 kV) for transmission, and 23,000 volts (23 kV) and 12,470 volts (12.47 kV) for sub-transmission and distribution.
Johnston Substation is owned by Rhode Island Energy, a utility company serving customers in Rhode Island.
As part of the US bulk power system, Johnston Substation must comply with NERC reliability standards and FERC regulations, which govern grid stability, maintenance, and operational practices.
Substations like Johnston serve as critical nodes that step down high transmission voltages to lower distribution voltages, enabling safe and reliable electricity delivery to homes, businesses, and industries.