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United States · asset class
Interconnectors in United States
The United States has 159 interconnectors mapped on the OverWatts open energy atlas — the 1st-largest fleet of the 104 countries that hold any, and 23% of the world's mapped total. Of these, 143 operating and 16 under construction or proposed. The largest is United States (US-MIDW-MISO) – United States (US-MIDA-PJM) interconnection (10.1 GW).
16 are in the pipeline, led by United States (US-SW-AZPS) – United States (US-CAL-CISO) interconnection (planned) (3.2 GW), proposed. They account for 2% of every energy asset OverWatts maps in United States.
159
Interconnector in United States
#1
of 104 countries
16
In construction / proposed
On the interactive map
Largest interconnectors in United States
- United States (US-MIDW-MISO) – United States (US-MIDA-PJM) interconnection10.1 GW
- United States (US-SW-AZPS) – United States (US-SW-SRP) interconnection4.3 GW
- United States (US-NY-NYIS) – United States (US-MIDA-PJM) interconnection3.3 GW
- United States (US-SW-AZPS) – United States (US-CAL-CISO) interconnection (planned)3.2 GW · 2024 · proposed
- United States (US-CAL-CISO) – United States (US-CAL-LDWP) interconnection3.2 GW
- United States (US-NW-BPAT) – United States (US-CAL-LDWP) interconnection3.0 GW
- United States (US-SW-AZPS) – United States (US-SW-PNM) interconnection (planned)3.0 GW · 2026 · proposed
- United States (US-TEX-ERCO) – United States (US-TEN-TVA) interconnection (planned)3.0 GW · 2029 · proposed
- United States (US-CAL-LDWP) – United States (US-NW-PACE) interconnection (planned)3.0 GW · 2027 · proposed
- United States (US-MIDW-MISO) – United States (US-TEN-TVA) interconnection2.9 GW
- United States (US-NW-BPAT) – United States (US-NW-PSEI) interconnection2.9 GW
- United States (US-NW-BPAT) – United States (US-CAL-CISO) interconnection2.5 GW
- United States (US-MIDW-AECI) – United States (US-CENT-SWPP) interconnection (planned)2.5 GW · 2028 · proposed
- United States (US-MIDW-MISO) – United States (US-CENT-SWPP) interconnection (planned)2.5 GW · 2028 · proposed
- United States (US-NW-BPAT) – United States (US-NW-PGE) interconnection2.4 GW
- United States (US-MIDW-MISO) – United States (US-MIDA-PJM) interconnection (planned)2.1 GW · proposed
- United States (US-CAL-CISO) – United States (US-SW-SRP) interconnection2.1 GW
- United States (US-NW-BPAT) – United States (US-NW-PACW) interconnection2.0 GW
- United States (US-CAL-LDWP) – United States (US-SW-WALC) interconnection1.8 GW
- United States (US-NW-IPCO) – United States (US-NW-PACE) interconnection1.7 GW
- United States (US-CAL-BANC) – United States (US-NW-BPAT) interconnection1.6 GW
- United States (US-MIDA-PJM) – United States (US-TEN-TVA) interconnection1.5 GW
- United States (US-NE-ISNE) – United States (US-NY-NYIS) interconnection1.5 GW
- United States (US-SW-AZPS) – United States (US-SW-PNM) interconnection (planned)1.5 GW · 2028 · proposed
- United States (US-CAL-CISO) – United States (US-NW-NEVP) interconnection (planned)1.5 GW · 2027 · proposed
- United States (US-SW-EPE) – United States (US-TEX-ERCO) interconnection (planned)1.5 GW · 2029 · proposed
- United States (US-CAL-LDWP) – United States (US-NW-NEVP) interconnection (planned)1.5 GW · 2027 · proposed
- United States (US-NW-NEVP) – United States (US-NW-PACE) interconnection (planned)1.5 GW · 2027 · proposed
- United States (US-SE-SOCO) – United States (US-TEN-TVA) interconnection1.5 GW
- United States (US-SW-AZPS) – United States (US-CAL-CISO) interconnection1.5 GW
- United States (US-NW-BPAT) – United States (US-NW-GRID) interconnection1.4 GW
- United States (US-CAR-CPLE) – United States (US-CAR-DUK) interconnection1.4 GW
- United States (US-CAL-CISO) – United States (US-NW-NEVP) interconnection1.4 GW
- United States (US-CAL-LDWP) – United States (US-NW-NEVP) interconnection1.4 GW
- United States (US-NW-BPAT) – United States (US-NW-NWMT) interconnection1.4 GW
- United States (US-SW-AZPS) – United States (US-SW-WALC) interconnection1.4 GW
- United States (US-MIDW-MISO) – United States (US-CENT-SWPP) interconnection1.3 GW
- United States (US-NW-PACE) – United States (US-NW-PACW) interconnection1.3 GW
- United States (US-FLA-FPL) – United States (US-SE-SOCO) interconnection1.3 GW
- United States (US-NW-AVRN) – United States (US-NW-BPAT) interconnection1.3 GW
- United States (US-CAR-DUK) – United States (US-MIDA-PJM) interconnection1.2 GW
- United States (US-FLA-FPC) – United States (US-FLA-FPL) interconnection1.2 GW
- United States (US-CAR-CPLE) – United States (US-MIDA-PJM) interconnection1.2 GW
- United States (US-SW-AZPS) – United States (US-SW-PNM) interconnection1.2 GW
- United States (US-FLA-FPL) – United States (US-FLA-SEC) interconnection1.2 GW
- United States (US-NW-AVA) – United States (US-NW-BPAT) interconnection1.1 GW
- United States (US-CAR-DUK) – United States (US-SE-SOCO) interconnection1.1 GW
- United States (US-NW-BPAT) – United States (US-NW-SCL) interconnection1.1 GW
- United States (US-CAL-BANC) – United States (US-CAL-CISO) interconnection1.1 GW
- United States (US-NW-PSCO) – United States (US-NW-WACM) interconnection1.1 GW
- United States (US-CAR-SC) – United States (US-CAR-SCEG) interconnection1.1 GW
- United States (US-CAR-SCEG) – United States (US-SE-SOCO) interconnection1.0 GW
- United States (US-MIDW-MISO) – United States (US-SE-SOCO) interconnection1.0 GW
- United States (US-NW-IPCO) – United States (US-NW-NWMT) interconnection (planned)1.0 GW · 2027 · proposed
- United States (US-NW-IPCO) – United States (US-NW-PACW) interconnection (planned)1.0 GW · 2026 · proposed
- United States (US-NW-PACE) – United States (US-NW-WACM) interconnection986 MW
- United States (US-NW-IPCO) – United States (US-NW-PACW) interconnection973 MW
- United States (US-SW-HGMA) – United States (US-SW-SRP) interconnection972 MW
- United States (US-NW-BPAT) – United States (US-NW-CHPD) interconnection956 MW
- United States (US-NW-BPAT) – United States (US-NW-GCPD) interconnection911 MW
- United States (US-MIDW-AECI) – United States (US-CENT-SWPP) interconnection853 MW
- United States (US-FLA-FPC) – United States (US-FLA-FMPP) interconnection853 MW
- United States (US-NW-NEVP) – United States (US-SW-WALC) interconnection842 MW
- United States (US-SW-AZPS) – United States (US-CAL-LDWP) interconnection822 MW
- United States (US-CAR-SC) – United States (US-SE-SOCO) interconnection819 MW
- United States (US-TEX-ERCO) – United States (US-CENT-SWPP) interconnection813 MW
- United States (US-SW-SRP) – United States (US-SW-TEPC) interconnection803 MW
- United States (US-MIDW-AECI) – United States (US-MIDW-MISO) interconnection796 MW
- United States (US-FLA-FPL) – United States (US-FLA-JEA) interconnection766 MW
- United States (US-NW-IPCO) – United States (US-NW-PACE) interconnection (planned)765 MW · 2028 · proposed
- United States (US-FLA-FPC) – United States (US-FLA-TEC) interconnection758 MW
- United States (US-SW-TEPC) – United States (US-SW-WALC) interconnection (planned)748 MW · 2028 · proposed
- United States (US-CAR-DUK) – United States (US-CAR-SC) interconnection733 MW
- United States (US-MIDW-LGEE) – United States (US-MIDA-PJM) interconnection698 MW
- United States (US-NW-GRID) – United States (US-SW-SRP) interconnection683 MW
- United States (US-FLA-FPC) – United States (US-FLA-SEC) interconnection680 MW
- United States (US-MIDW-LGEE) – United States (US-MIDW-MISO) interconnection670 MW
- United States (US-SW-SRP) – United States (US-SW-WALC) interconnection654 MW
- United States (US-CAR-CPLE) – United States (US-CAR-SC) interconnection608 MW
- United States (US-MIDW-AECI) – United States (US-CENT-SPA) interconnection602 MW
- United States (US-MIDW-LGEE) – United States (US-TEN-TVA) interconnection598 MW
- United States (US-NW-BPAT) – United States (US-NW-DOPD) interconnection586 MW
- United States (US-SW-AZPS) – United States (US-NW-PACE) interconnection581 MW
- United States (US-SW-DEAA) – United States (US-SW-SRP) interconnection576 MW
- United States (US-NW-AVRN) – United States (US-NW-PACW) interconnection574 MW
- United States (US-SW-GRIF) – United States (US-SW-WALC) interconnection567 MW
- United States (US-CAL-CISO) – United States (US-CAL-IID) interconnection562 MW
- United States (US-SW-EPE) – United States (US-SW-PNM) interconnection558 MW
- United States (US-CAL-CISO) – United States (US-CAL-TIDC) interconnection550 MW
- United States (US-NW-BPAT) – United States (US-NW-TPWR) interconnection547 MW
- United States (US-FLA-FPL) – United States (US-FLA-TEC) interconnection547 MW
- United States (US-FLA-FPL) – United States (US-FLA-FMPP) interconnection518 MW
- United States (US-SE-SEPA) – United States (US-SE-SOCO) interconnection513 MW
- United States (US-MIDW-MISO) – United States (US-CENT-SPA) interconnection509 MW
- United States (US-SW-WALC) – United States (US-NW-WACM) interconnection500 MW
- United States (US-NW-NEVP) – United States (US-NW-PACE) interconnection499 MW
- United States (US-NW-GRID) – United States (US-SW-PNM) interconnection495 MW
- United States (US-CENT-SPA) – United States (US-CENT-SWPP) interconnection472 MW
- United States (US-SW-AZPS) – United States (US-SW-TEPC) interconnection467 MW
- United States (US-CAL-LDWP) – United States (US-NW-PACE) interconnection465 MW
Under construction & proposed
- United States (US-SW-AZPS) – United States (US-CAL-CISO) interconnection (planned)3.2 GW · 2024 · proposed
- United States (US-SW-AZPS) – United States (US-SW-PNM) interconnection (planned)3.0 GW · 2026 · proposed
- United States (US-TEX-ERCO) – United States (US-TEN-TVA) interconnection (planned)3.0 GW · 2029 · proposed
- United States (US-CAL-LDWP) – United States (US-NW-PACE) interconnection (planned)3.0 GW · 2027 · proposed
- United States (US-MIDW-AECI) – United States (US-CENT-SWPP) interconnection (planned)2.5 GW · 2028 · proposed
- United States (US-MIDW-MISO) – United States (US-CENT-SWPP) interconnection (planned)2.5 GW · 2028 · proposed
- United States (US-MIDW-MISO) – United States (US-MIDA-PJM) interconnection (planned)2.1 GW · proposed
- United States (US-SW-AZPS) – United States (US-SW-PNM) interconnection (planned)1.5 GW · 2028 · proposed
- United States (US-CAL-CISO) – United States (US-NW-NEVP) interconnection (planned)1.5 GW · 2027 · proposed
- United States (US-SW-EPE) – United States (US-TEX-ERCO) interconnection (planned)1.5 GW · 2029 · proposed
- United States (US-CAL-LDWP) – United States (US-NW-NEVP) interconnection (planned)1.5 GW · 2027 · proposed
- United States (US-NW-NEVP) – United States (US-NW-PACE) interconnection (planned)1.5 GW · 2027 · proposed
How United States compares · interconnectors by country
Frequently asked
- How many interconnectors are there in United States?
- OverWatts maps 159 interconnectors in United States — 23% of the world's mapped total, the 1st-largest national fleet of the 104 countries with any.
- What is the largest interconnector in United States?
- United States (US-MIDW-MISO) – United States (US-MIDA-PJM) interconnection, at 10.1 GW.
- What new interconnectors are being built in United States?
- 16 projects are under construction or proposed. The largest are United States (US-SW-AZPS) – United States (US-CAL-CISO) interconnection (planned) (3.2 GW), United States (US-SW-AZPS) – United States (US-SW-PNM) interconnection (planned) (3.0 GW) and United States (US-TEX-ERCO) – United States (US-TEN-TVA) interconnection (planned) (3.0 GW).