🇺🇸 USA Electrical Grid

Reference profile of the USA electricity grid — grid frequency, synchronous area, and the main transmission & distribution operators with their operating voltages. Compiled from the TransformerPath worldwide grid census.

Region North AmericaFrequency 60 HzSynchronous area 3 interconnectionsOperators 3

Grid operators

Eastern InterconnectionPJM, MISO, SPP, NYISO, ISO-NE, SERC — world's 2nd-largest sync area765 kVSite →

Western Interconnection (WECC)CAISO + western utilities, 14 states + BC/AB + Baja500 kVSite →

ERCOT (Texas)Standalone sync grid — DC ties only to East/Mexico345 kVSite →

Related TransformerPath

USA market hub USA manufacturers (41)

Transformer-relevant projects

Cardinal-Hickory Creek Transmission Line Project · 345 kV · energized
Mankato–Mississippi River 345 kV Transmission Project · 345 kV · planned
Big Stone South to Alexandria 345 kV Transmission Line (MISO LRTP) · 345 kV · planned
SunZia Transmission (±525 kV HVDC) · 525 kV HVDC · energized
Champlain Hudson Power Express (CHPE) · 320 kV HVDC · energized
TransWest Express Transmission Project · 600 kV HVDC · construction
Grain Belt Express Transmission Line · 525 kV HVDC · construction
SOO Green HVDC Link · 525 kV HVDC · planned
Maryland Piedmont Reliability Project (MPRP) · 500 kV · planned
Beckham County–Potter 345 kV Project (SPP, TX–OK) · 345 kV · awarded
Manning–Metcalf 500 kV Transmission Line Project (CAISO) · 500 kV · planned
Southline Transmission Project · 345 kV · planned
Coastal Virginia Offshore Wind (CVOW) · · construction
Vineyard Wind 1 · · energized
Sunrise Wind · · construction
Empire Wind 1 · · construction
SouthCoast Wind · · awarded
Atlantic Shores South · · planned
Nova Power Bank (BESS) · · construction
Edwards Sanborn Solar + Energy Storage · · energized
AEP Ohio New Albany Data Center Substation (Google) · · planned
Entergy Louisiana Richland Parish Substation (Meta Data Center) · · construction
ComEd Franklin Park Data Center Substation (Digital Realty) · · energized
New England Clean Energy Connect (NECEC) · HVDC (1,200 MW) · energized
Jamestown–Ellendale (JETx) 345 kV Transmission Line (MISO LRTP Tranche 1) · 345 kV · planned
North Plains Connector (Grid United / ALLETE interregional HVDC, MT–ND) · · planned

Reference profile from the TransformerPath grid census; operator, voltage and frequency data are as recorded and may change. Report a correction.

Supply transformers to USA

Submit a transformer requirement and TransformerPath will match it against the relevant manufacturing base.

Submit an RFQ Are you a supplier here? Get Verified →